TPS76427DBVR_技术文档

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

DBV PACKAGE

(TOP VIEW)

150-mA Low Noise, Low-Dropout Regulator

Output Voltage: 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V

Output Noise Typically 50 µV

1

2

3

5

OUT

IN

Quiescent Current Typically 85 µA

GND

Dropout Voltage, Typically 300 mV

at 150 mA

4

BYPASS

EN

Thermal Protection

Over Current Limitation

Less Than 2-µA Quiescent Current in

Shutdown Mode

–40°C to 125°C Operating Junction

Temperature Range

5-Pin SOT-23 (DBV) Package

description

The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout

voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when

compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23

package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and

applications where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be

replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the

dropout voltage is very low—typically 300 mV at 150 mA of load current (TPS76433)—and is directly

proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current

is very low (140 µA maximum) and is stable over the entire range of output load current (0 mA to 150 mA).

Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage feature and

low-power operation result in a significant increase in system battery operating life.

The TPS764xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current

to 1 µA maximum at T = 25°C.The TPS764xx is offered in 2.5-V, 2.7-V, 2.8-V, 3.0-V, and 3.3-V fixed-voltages.

J

AVAILABLE OPTIONS

T

VOLTAGE

2.5 V

PACKAGE

PART NUMBER

SYMBOL

PBJI

J

†

‡

TPS76425DBVT

TPS76427DBVT

TPS76428DBVT

TPS76430DBVT

TPS76433DBVT

TPS76425DBVR

TPS76427DBVR

TPS76428DBVR

TPS76430DBVR

TPS76433DBVR

2.7 V

PBKI

SOT-23

(DBV)

–40°C to 125°C

2.8 V

PCEI

3.0 V

PBLI

3.3 V

PBMI

†

‡

The DBVT passive indicates tape and reel of 250 parts.

The DBVR passive indicates tape and reel of 3000 parts.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

functional block diagram

TPS76425/ 27/ 28/ 30/ 33

OUT

IN

EN

Current Limit

/ Thermal

BYPASS

Protection

V

REF

GND

Terminal Functions

TERMINAL

NAME

I/O

DESCRIPTION

GND

Ground

Enable input

EN

I

BYPASS

IN

Output bypass capacitor

Input supply voltage

I

OUT

O

Regulated output voltage

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Input voltage range

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 10 V

Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V + 0.3 V

I

Voltage on OUT, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V

Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited

ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV

Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating tables

Operating virtual junction temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 150°C

J

Storage temperature range, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C

stg

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to network ground terminal.

DISSIPATION RATING TABLE

DERATING FACTOR

T

A

≤ 25°C

T

A

= 70°C

T = 85°C

A

BOARD

PACKAGE

R

θJA

θJC

ABOVE T = 25°C

POWER RATING POWER RATING POWER RATING

A

‡

Low K

DBV

65.8 °C/W

259 °C/W

180 °C/W

3.9 mW/°C

5.6 mW/°C

386 mW

555 mW

212 mW

305 mW

154 mW

222 mW

§

High K

‡

§

The JEDEC Low K (1s) board design used to derive this data was a 3 inch x 3 inch, two layer board with 2 ounce copper traces on top of the board.

The JEDEC High K (2s2p) board design used to derive this data was a 3 inch x 3 inch, multilayer board with 1 ounce internal power and ground

planes and 2 ounce copper traces on top and bottom of the board.

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

recommended operating conditions

MIN NOM

MAX

10

UNIT

V

†

Input voltage, V

2.7

0

I

Continuous output current, I

150

125

mA

°C

O

Operating junction temperature, T

–40

J

†

To calculate the minimum input voltage for your maximum output current, use the following equation: V

I(min)

= V

+ V

O(max) DO(max load)

electrical characteristics over recommended operating free-air temperature range,

V = V

+ 1 V, I = 1 mA, EN = IN, C = 4.7 µF (unless otherwise noted)

I

O(typ)

O o

PARAMETER

TEST CONDITIONS

T = 25°C

MIN

2.45

TYP

2.5

2.7

2.8

3.0

3.3

MAX

UNIT

I

= 1 mA to 100 mA,

= 1 mA to 100 mA

= 1 mA to 150 mA,

= 1 mA to 150 mA

= 1 mA to 100 mA,

= 1 mA to 100 mA

= 1 mA to 150 mA,

= 1 mA to 150 mA

= 1 mA to 100 mA

= 1 mA to 150 mA,

= 1 mA to 150 mA

= 1 mA to 100 mA,

= 1 mA to 100 mA

= 1 mA to 150 mA,

= 1 mA to 150 mA

= 1 mA to 100 mA,

= 1 mA to 100 mA

= 1 mA to 150 mA,

= 1 mA to 150 mA

= 0 to 150 mA,

2.55

O

J

2.425

2.438

2.407

2.646

2.619

2.632

2.598

2.744

2.73

2.575

2.562

2.593

2.754

2.781

2.768

2.8013

2.856

2.870

2.884

2.905

3.06

TPS76425

TPS76427

TPS76428

TPS76430

TPS76433

V

T = 25°C

J

T = 25°C

J

V

T = 25°C

J

T = 25°C

J

V

O

Output voltage

T = 25°C

J

2.716

2.695

2.94

T = 25°C

J

2.925

2.91

3.075

3.090

3.112

3.366

3.399

3.382

3.423

T = 25°C

J

2.887

3.234

3.201

3.218

3.177

T = 25°C

J

T = 25°C

J

T = 25°C,

J

85

0.5

50

100

Quiescent current

(GND terminal current)

See Note 2

I

(Q)

I

O

= 0 to 150 mA,

See Note 2

140

1

µA

µV

EN < 0.5 V,

T = 25°C

J

Standby current

EN < 0.5 V

2

BW = 300 Hz to 50 kHz,

C = 10 µF,

o

See Note 2

V

n

Output noise voltage

T = 25°C,

J

Bypass voltage

Ripple rejection

Current limit

T = 25°C

1.192

60

V

dB

A

J

PSRR

f = 1 kHz, C = 10 µF,

T = 25°C, See Note 2

o

J

T = 25°C

J

See Note 3

0.8

1.5

NOTES: 2. Minimum IN operating voltage is 2.7 V or V

+ 1 V, whichever is greater.

O(typ)

3. Test condition includes, output voltage V =0 V and pulse duration = 10 mS.

O

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

electrical characteristics over recommended operating free-air temperature range,

V = V

+ 1 V, I = 1 mA, EN = IN, C = 4.7 µF (unless otherwise noted) (continued)

I

O(typ)

O

o

PARAMETER

TEST CONDITIONS

+ 1 V < V ≤ 10 V, V ≥ 3.5 V, T = 25°C

MIN

TYP

MAX

0.07

0.1

2

UNIT

V

0.04

Output voltage line regulation (∆V /V )

(see Note 4)

O

I

J

O

%/V

+ 1 V < V ≤ 10 V,

V ≥ 3.5 V

I

O

I

V

EN high level input

EN low level input

See Note 2

EN = 0 V

EN = IN

1.4

1.2

IH

V

0.5

IL

–0.01

0.2

–0.5

I

EN input current

µA

I

= 0 mA,

T = 25°C

J

O

= 1 mA,

T = 25°C

3

O

J

= 50 mA,

= 50 mA

= 75 mA,

= 75 mA

= 100 mA,

= 100 mA

= 150 mA,

= 150 mA

= 0 mA,

T = 25°C

J

120

150

200

225

300

400

450

600

O

T = 25°C

J

180

240

360

O

TPS76425

mV

O

T = 25°C

J

O

T = 25°C

J

O

V

DO

Dropout voltage (see Note 5)

T = 25°C

J

0.2

3

O

= 1 mA,

T = 25°C

J

O

= 50 mA,

= 50 mA

= 75 mA,

= 75 mA

= 100 mA,

= 100 mA

= 150 mA,

= 150 mA

T = 25°C

J

100

125

166

188

250

333

375

500

O

T = 25°C

J

150

200

300

O

TPS76433

mV

O

T = 25°C

J

O

T = 25°C

J

O

NOTES: 2. Minimum IN operating voltage is 2.7 V or V

+ 1 V, whichever is greater.

O(typ)

4. If V < 2.5 V and V

Imax

= 10 V, V

= 3.5 V:

Imin

O

V

3.5 V

O

Imax

100

Line Reg. (mV)

% V

1000

If V > 2.5 V and V

Imax

= 10 V, V

= V + 1 V:

Imin O

O

V

1

O

Imax

100

O

Line Reg. (mV)

% V

1000

5. Dropout voltage is defined as the differential voltage between V and V when V drops 100 mV below the value measured with

O

I

O

V = V + 1.0 V.

I

O

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

vs Output current

vs Free-air temperature

vs Frequency

1

2, 3, 4

5

V

Output voltage

Output noise

O

n

vs Bypass capacitance

vs Load current

6

Output noise voltage

n

7

Z

Output impedance

Dropout voltage

vs Frequency

8

o

V

vs Free-air temperature

vs Frequency

9

DO

Ripple rejection

10

Line transient response

Load transient response

11, 13

12, 14

15, 17

16, 18

vs Output current

Compensation series resistance (CSR)

vs Added ceramic capacitance

TPS76425

OUTPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

2.505

2.5

2.53

2.52

2.51

2.5

V = 3.5 V

I

V = 3.5 V

I

C = C = 4.7 µF

I

O

I

O

= 25°C

T

A

2.495

2.49

I

O

= 1 mA

I

= 150 mA

2.485

2.48

2.49

O

2.48

2.47

2.475

0

30

60

90

120

150

180

–55 –35 –15

5

25

45

65

85 105 125

I

O

– Output Current – mA (Pulse Tested)

T

A

– Free-Air Temperature – °C

Figure 1

Figure 2

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

TYPICAL CHARACTERISTICS

TPS76425

GROUND CURRENT

vs

TPS76433

OUTPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

1000

3.34

3.33

V = 4.3 V

I

V = 6 V

I

C = C = 4.7 µF

I

O

I

= 0 mA and 150 mA

3.32

3.31

3.3

I

O

= 1 mA

100

3.29

3.28

I

O

= 150 mA

3.27

3.26

10

–55 –35 –15

5

25

45

65

85 105 125

–55 –35 –15

5

25

45

65

85 105 125

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 3

Figure 4

OUTPUT NOISE

vs

FREQUENCY

OUTPUT NOISE VOLTAGE

vs

3.3

BYPASS CAPACITANCE

80

70

60

50

40

C

= 10 µF

= 150 mA

O

I

O

f = 10 Hz to 100 kHz

= 25°C

C

= 1 µF

= 1 mA

T

O

A

I

O

C

= 10 µF

= 150 mA

O

I

O

0.33

C

= 1 µF

= 150 mA

O

I

O

0.033

0

V

= 3.3 V

O

C

= 10 µF

= 1 mA

O

C

= 0.1 µF

30

20

(BYPASS)

= 25°C

I

O

T

A

100

1.1 k

10.1 k

100.1 k

–3

10

–2

10

–1

10

f – Frequency – Hz

Bypass Capacitance – µF

Figure 6

Figure 5

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

TYPICAL CHARACTERISTICS

OUTPUT NOISE VOLTAGE

vs

OUTPUT IMPEDANCE

vs

LOAD CURRENT

FREQUENCY

70

60

50

40

30

20

10

I

= 1 mA

O

1

V

C

= 2.5 V

= 10 µF

O

I

O

= 150 mA

f = 10 Hz to 100 kHz

= 25°C

C = C = 4.7 µF

ESR = 1 Ω

I

O

T

A

T

= 25°C

A

1

2

10

0.1

0.01

0

10

0.1

1

10

100

1000

Load Current – mA

f – Frequency – kHz

Figure 7

Figure 8

TPS76425

DROPOUT VOLTAGE

vs

TPS76425

RIPPLE REJECTION

vs

FREE-AIR TEMPERATURE

FREQUENCY

600

100

V

C

= 2.5 V

O

V = EN = 2.7 V

I

90

80

70

60

50

40

30

= 0.01 µF

(BYPASS)

= 10 µF

C = C = 4.7 µF

I

O

L

500

400

300

200

150 mA

I

O

= 1 mA

I

= 150 mA

O

1 mA

0 mA

20

100

0

10

0

10

100

1 k

10 k

100 k

1 M

10 M

–55 –35 –15

5

25

45

65

85 105 125

T

A

– Free-Air Temperature – °C

f – Frequency – Hz

Figure 9

Figure 10

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

TYPICAL CHARACTERISTICS

TPS76425

LINE TRANSIENT RESPONSE

TPS76425

LOAD TRANSIENT RESPONSE

200 mA

100 mA

0 mA

T

A

= 25°C

T

A

= 25°C

6 V

4.7 V

50 mV

0

50 mV

0

–50 mV

–100 mV

0

20 40 60 80 100 120 140 160 180 200

0

20 40 60 80 100 120 140 160 180 200

t – Time – µs

Figure 11

Figure 12

TPS76433

LINE TRANSIENT RESPONSE

TPS76433

LOAD TRANSIENT RESPONSE

200 mA

100 mA

T

A

= 25°C

T = 25°C

A

6 V

0

4.7 V

100 mV

50 mV

0

–50 mV

–100 mV

–150 mV

dv

dt

1 V

10 µs

0

20 40 60 80 100 120 140 160 180 200

0

20 40 60 80 100 120 140 160 180 200

t – Time – µs

Figure 13

Figure 14

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

TYPICAL CHARACTERISTICS

TYPICAL REGIONS OF STABILITY

COMPENSATION SERIES RESISTANCE (CSR)

vs

TYPICAL REGIONS OF STABILITY

COMPENSATION SERIES RESISTANCE (CSR)

vs

†

OUTPUT CURRENT

ADDED CERAMIC CAPACITANCE

100

Region of Instability

10

1

10

1

C

T

= 4.7 µF

= 25°C

I = 150 mA

O

A

C

= 4.7 µF

= 25°C

O

T

A

0.1

Region of Instability

0.01

0

50

100

150

200

250

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

1

I

O

– Output Current – mA

Added Ceramic Capacitance – µF

Figure 15

Figure 16

TYPICAL REGIONS OF STABILITY

†

COMPENSATION SERIES RESISTANCE (CSR)

vs

OUTPUT CURRENT

ADDED CERAMIC CAPACITANCE

100

Region of Instability

10

1

10

1

C

= 10 µF

C

= 10 µF

O

0.1

Region of Instability

0.01

0

50

100

150

200

250

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

1

I

O

– Output Current – mA

Added Ceramic Capacitance – µF

Figure 17

Figure 18

†

CSRreferstothetotalseriesresistance, includingtheESRofthecapacitor, anyseriesresistanceaddedexternally, andPWBtraceresistance

to C

.

O

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

APPLICATION INFORMATION

The TPS764xx family of low-noise and low-dropout (LDO) regulators are optimized for use in battery-operated

equipment. They feature extremely low noise (50 µV), low dropout voltages, low quiescent current (140 µA),

and an enable input to reduce supply current to less than 2 µA when the regulator is turned off.

device operation

The TPS764xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over

more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device

which, unlike a PNP transistor, does not require increased drive current as output current increases. Supply

current in the TPS764xx is essentially constant from no-load to maximum load.

Current limiting and thermal protection prevent damage by excessive output current and/or power dissipation.

The device switches into a constant-current mode at approximately 1 A; further load reduces the output voltage

insteadofincreasingtheoutputcurrent. Thethermalprotectionshutstheregulatoroffifthejunctiontemperature

rises above 165°C. Recovery is automatic when the junction temperature drops approximately 25°C below the

high temperature trip point. The PMOS pass element includes a back diode that safely conducts reverse current

when the input voltage level drops below the output voltage level.

An internal resistor, in conjunction with external 0.01-µF bypass capacitor, creates a low-pass filter to further

reduce the noise. The TPS764xx exhibits only 50 µV of output voltage noise using 0.01 µF bypass and 4.7-µF

output capacitors.

A logic low on the enable input, EN, shuts off the output and reduces the supply current to less than 2 µA. EN

should be tied high in applications where the shutdown feature is not used.

A typical application circuit is shown in Figure 19.

†

TPS764xx

1

3

V

IN

I

5

4

V

OUT

O

C1

1 µF

BYPASS

+

EN

+

0.01 µF

4.7 µF

GND

2

CSR = 1 Ω

†

TPS76425, TPS76427 TPS76430, TPS76433.

Figure 19. Typical Application Circuit

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

APPLICATION INFORMATION

external capacitor requirements

Although not required, a 0.047-µF or larger ceramic bypass input capacitor, connected between IN and GND

and located close to the TPS764xx, is recommended to improve transient response and noise rejection. A

higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated

and the device is located several inches from the power source.

Like all low dropout regulators, the TPS764xx requires an output capacitor connected between OUT and GND

to stabilize the internal loop control. The minimum recommended capacitance value is 4.7 µF and the ESR

(equivalent series resistance) must be between 0.2 Ω and 10 Ω. Capacitor values 4.7 µF or larger are

acceptable, provided the ESR is less than 10Ω. Solidtantalumelectrolytic, aluminumelectrolytic, andmultilayer

ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the

commercially available 4.7 µF surface-mount solid tantalum capacitors, including devices from Sprague,

Kemet, and Nichico, meet the ESR requirements previously stated. Multilayer ceramic capacitors should have

minimum values of 1 µF over the full operating temperature range of the equipment.

CAPACITOR SELECTION

†

PART NO.

T494B475K016AS

195D106x0016x2T

695D106x003562T

TPSC475K035R0600

MFR.

KEMET

SPRAGUE

AVX

VALUE

4.7 µF

10 µF

MAX ESR

SIZE (H × L × W)

1.9 × 3.5 × 2.8

1.3 × 7.0 × 2.7

2.5 × 7.6 × 2.5

2.6 × 6.0 × 3.2

1.5 Ω

10 µF

1.3 Ω

4.7 µF

0.6 Ω

†

Size is in mm. ESR is maximum resistance in ohms at 100 kHz and T = 25°C. Listings are sorted by height.

A

11

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

APPLICATION INFORMATION

power dissipation and junction temperature

Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature

allowable without damaging the device is 150°C. This restriction limits the power dissipation the regulator can

handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the

maximum allowable dissipation, P

, and the actual dissipation, P , which must be less than or equal to

D(max)

D

P

.

D(max)

The maximum-power-dissipation limit is determined using the following equation:

T max

J

T

A

P

D(max)

R

JA

Where:

T max is the maximum allowable junction temperature

J

R

is the thermal resistance junction-to-ambient for the package, see the dissipation rating table.

θJA

T is the ambient temperature.

A

The regulator dissipation is calculated using:

P

V

I

D

I

O

Power dissipation resulting from quiescent current is negligible.

regulator protection

The TPS764xx pass element has a built-in back diode that safely conducts reverse current when the input

voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the

input and is not internally limited. If extended reverse voltage is anticipated, external limiting might be

appropriate.

The TPS764xx also features internal current limiting and thermal protection. During normal operation, the

TPS764xx limits output current to approximately 800 mA. When current limiting engages, the output voltage

scales back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross

device failure, care should be taken not to exceed the power dissipation ratings of the package. If the

temperature of the device exceeds 165°C, thermal-protection circuitry shuts it down. Once the device has

cooled down to below 140°C, regulator operation resumes.

12

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433

LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS

SLVS180B – MARCH 1999 – REVISED MAY 2001

MECHANICAL DATA

DBV (R-PDSO-G5)

PLASTIC SMALL-OUTLINE

0,50

M

0,20

0,95

5

0,30

4

0,15 NOM

1,70

1,50

3,00

2,60

1

3

Gage Plane

3,00

2,80

0,25

0°–8°

0,55

0,35

Seating Plane

0,10

1,45

0,95

0,05 MIN

4073253-4/F 10/00

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion.

D. Falls within JEDEC MO-178

13

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

5-Feb-2007

PACKAGING INFORMATION

Orderable Device

TPS76425DBVR

TPS76425DBVRG4

TPS76425DBVT

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SOT-23

DBV

5

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

SOT-23

DBV

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76425DBVTG4

TPS76427DBVR

TPS76427DBVRG4

TPS76427DBVT

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76427DBVTG4

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76428DBV

OBSOLETE SOT-23

DBV

5

TBD

Call TI

TPS76428DBVR

ACTIVE

SOT-23

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76428DBVRG4

TPS76428DBVT

DBV

5

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76428DBVTG4

TPS76430DBVR

TPS76430DBVRG4

TPS76430DBVT

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76430DBVTG4

TPS76433DBVR

TPS76433DBVRG4

TPS76433DBVT

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS76433DBVTG4

250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

5-Feb-2007

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and

package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS

compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com

11-Mar-2008

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device

Package Package Pins

Type Drawing

SPQ

Reel

A0 (mm)

B0 (mm)

K0 (mm)

P1

W

Pin1

Diameter Width

(mm) W1 (mm)

(mm) (mm) Quadrant

TPS76425DBVR

TPS76425DBVT

TPS76427DBVR

TPS76427DBVT

TPS76428DBVR

TPS76428DBVT

TPS76430DBVR

TPS76430DBVT

TPS76433DBVR

TPS76433DBVT

SOT-23

DBV

5

3000

250

180.0

9.0

3.15

3.2

1.4

4.0

8.0

Q3

3000

250

3000

250

3000

250

3000

250

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com

11-Mar-2008

*All dimensions are nominal

Device

Package Type Package Drawing Pins

SPQ

Length (mm) Width (mm) Height (mm)

TPS76425DBVR

TPS76425DBVT

TPS76427DBVR

TPS76427DBVT

TPS76428DBVR

TPS76428DBVT

TPS76430DBVR

TPS76430DBVT

TPS76433DBVR

TPS76433DBVT

SOT-23

DBV

5

3000

250

182.0

20.0

3000

250

3000

250

3000

250

3000

250

Pack Materials-Page 2

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,

and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should

obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are

sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard

warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where

mandated by government requirements, testing of all parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and

applications using TI components. To minimize the risks associated with customer products and applications, customers should provide

adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,

or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information

published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a

warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual

property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied

by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive

business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional

restrictions.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all

express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not

responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably

be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing

such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products

and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be

provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in

such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are

specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military

specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at

the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are

designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated

products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products

Applications

Audio

Automotive

Broadband

Digital Control

Medical

Amplifiers

Data Converters

DSP

Clocks and Timers

Interface

amplifier.ti.com

dataconverter.ti.com

dsp.ti.com

www.ti.com/clocks

interface.ti.com

logic.ti.com

www.ti.com/audio

www.ti.com/automotive

www.ti.com/broadband

www.ti.com/digitalcontrol

www.ti.com/medical

www.ti.com/military

Logic

Military

Power Mgmt

Microcontrollers

RFID

power.ti.com

microcontroller.ti.com

www.ti-rfid.com

Optical Networking

Security

Telephony

Video & Imaging

Wireless

www.ti.com/opticalnetwork

www.ti.com/security

www.ti.com/telephony

www.ti.com/video

RF/IF and ZigBee® Solutions www.ti.com/lprf

www.ti.com/wireless

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265


型号：	TPS76427DBVR
厂家：	Rochester Electronics
描述：	2.7V FIXED POSITIVE LDO REGULATOR, PDSO5, GREEN, PLASTIC, SOT-23, 5 PIN 光电二极管输出元件调节器
文件：	总19页 (文件大小：1115K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TPS76427DBVR [ROCHESTER]

相关型号：

TPS76427DBVRG4

TPS76427DBVT

TPS76427DBVT

TPS76427DBVTG4

TPS76428

TPS76428DBV

TPS76428DBVR

TPS76428DBVRG4

TPS76428DBVT

TPS76428DBVT

TPS76428DBVTG4

TPS76430