TL431BIDM-TR_技术文档

TL431/TL431A/TL431B

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R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

T H E I N F I N I T E P O W E R O F I N N O V A T I O N

P R O D U C T I O N D A T A S H E E T

DESCRIPTION

KEY FEATURES

W INITIAL VOLTAGE REFERENCE ACCURACY OF

0.4% (TL431B)

W SINK CURRENT CAPABILITY 1mA to 100mA

W TYPICAL OUTPUT DYNAMIC IMPEDANCE

LESS THAN 200mΩ;

TYPICAL OUTPUT IMPEDANCE OF THE

TL431B LESS THAN 100mΩ

W ADJUSTABLE OUTPUT VOLTAGE FROM 2.5V

The TL431/TL431A/TL431B series

precision adjustable three terminal shunt

voltage regulators are pin-to-pin

compatible with the industry standard

TL431. The output voltage of this

reference is programmable by using two

external resistors from 2.5V to 36V.

These devices offer low output

impedance for improved load regulation.

The typical output impedance of these

devices is 200mΩ. These devices find

application in the feedback path of

switching power supplies, OVP

crowbar circuits, reference for A/D,

D/A, and as zener diodes with

improved turn-on characteristics.

TO 36V

W AVAILABLE IN SURFACE-MOUNT PACKAGES

W LOW OUTPUT NOISE

W TYPICAL EQUIVALENT FULL RANGE

NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.

TEMPERATURE COEFFICIENT OF 30ppm/°C

W DIRECT PIN-TO-PIN REPLACEMENT FOR

INDUSTRY STANDARD TL431 AND TL1431

PRODUCT HIGHLIGHT

P R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

V_IN

V_OUT

R1

R2

TL431/A

& TL431B

R1

R2

V_O= 1 +

V

REF

*

PACKAGE ORDER INFORMATION

Plastic SOIC

8-pin

Plastic TO-92

3-pin

Initial

Tolerance

T_A(°C)

DM

LP

2%

1%

TL431CDM

TL431ACDM

TL431BCDM

TL431IDM

TL431CLP

0 to 70

TL431ACLP

TL431BCLP

TL431ILP

0.4%

2%

-40 to 85

1%

TL431AIDM

TL431BIDM

TL431AILP

TL431BILP

0.4%

Note: All surface-mount packages are available in Tape & Reel.

Append the letter "T" to part number. (i.e. TL431CDMT)

TO-92 (LP) package also available in ammo-pack.

L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .

11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570

Rev. 1.3 9/99

1

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N

P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

ABSOLUTE MAXIMUM RATINGS (Note 1)

PACKAGE PIN OUTS

Cathode to Anode Voltage (V_KA) (Note 2) .................................................... -0.3V to 37V

Reference Input Current (I_REF) ................................................................... -50µA to 10mA

Continuous Cathode Current (I_K) ......................................................... -100mA to 150mA

Operating Junction Temperature

Plastic (DM, LP Packages) .................................................................................... 150°C

Storage Temperature Range ...................................................................... -65°C to 150°C

Lead Temperature ..................................................................................................... 300°C

1

2

3

4

8

7

6

5

REF

CATHODE

N.C.

ANODE

N.C.

ANODE

N.C.

DM PACKAGE

(Top View)

Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect

to Ground. Currents are positive into, negative out of the specified terminal. Pin

numbers refer to DIL packages only.

Note 2. Voltage values are with respect to the anode terminal unless otherwise noted.

1. CATHODE

2. ANODE

3. REF

THERMAL DATA

DM PACKAGE:

THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ_JA

LP PACKAGE:

165°C/W

156°C/W

LP PACKAGE

(Top View)

THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ_JA

Junction Temperature Calculation: T_J= T_A+ (P_Dx θ_JA).

The θ_JAnumbers are guidelines for the thermal performance of the device/pc-board system.

All of the above assume no ambient airflow

BLOCK DIAGRAM

Cathode (K)

Ref (R)

V_REF

Anode (A)

Rev. 1.3 9/99

2

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N

P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

ELECTRICAL CHARACTERISTICS (Note 3)

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for TL431C/TL431AC/TL431BC with 0°C ≤ T_A≤ 70°C,

TL431I/TL431AI/TL431BI with -40°C ≤ T_A≤ 85°C.)

TL431/431A/431B

Min. Typ. Max.

Parameter

Symbol

Test Conditions

Units

Reference Input Voltage

TL431

V_REF

I_K= 10mA, V_KA= V_REF, T_A= 25°C

2440 2495 2550

2470 2495 2520

2490 2500 2510

mV

mV/V

µA

mA

µA

Ω

TL431A

TL431B

TL431C

TL431I

I_K= 10mA, V_KA= V_REF, T_A= 25°C

I_K= 10mA, V_KA= V_REF

Reference Drift

4

5

4

5

4

5

17

30

17

30

15

20

I_K= 10mA, V_KA= V_REF

TL431AC

TL431AI

TL431BC

TL431BI

∆V_REF

∆V_KA

I_K= 10mA, V_KA= V_REF

Voltage Ratio, Ref to Cathode TL431, TL431A

I_K= 10mA, V_KA= 2.5V to 36V

V_KA= V_REF, T_A= 25°C

-1.4 -2.7

(Note 4)

Reference Input Current

TL431B

TL431,TL431A

-1.1

2

-2

4

I_REF

V_KA= V_REF, T_A= 25°C

1.5 1.9

2.3

TL431B

V_KA= V_REF, T_A= Operating Range

V_KA= V_REFto 36V

Minimum Operating Current

Off-State Cathode Current

I_MIN

I_OFF

0.4

0.1

1

2

TL431

V_KA= V_REFto 36V, T_A= 25°C

V_KA= V_REFto 36V, T_A= Operating Range

V_KA= 36V, V_REF= 0V, T_A= 25°C

V_KA= V_REF, I_K= 1mA to 100mA, f ≤ 1kHz, T_A= 25°C

TL431A

TL431B

0.18 0.5

0.2 0.5

0.1 0.2

Dynamic Impedance

TL431

TL431B

| Z_KA|

Ω

Note 3. These parameters are guaranteed by design.

∆V_REF

Note 4.

Ratio of change in reference input voltage

to the change in cathode voltage.

∆V_KA

Rev. 1.3 9/99

3

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N

P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

GRAPH / CURVE INDEX

FIGURE INDEX

Characteristic Curves

Parameter Measurement Information

FIGURE #

1. REFERENCE INPUT VOLTAGE vs. FREE-AIR TEMPERATURE

2. REFERENCE INPUT CURRENT vs. FREE-AIR TEMPERATURE

3. CATHODE CURRENT vs. CATHODE VOLTAGE

8. TEST CIRCUIT FOR V_KA= V_REF

9. TEST CIRCUIT FOR V_KA> V_REF

10. TEST CIRCUIT FOR I_OFF

4. CATHODE CURRENT vs. CATHODE VOLTAGE

5. OFF-STATE CATHODE CURRENT vs. FREE-AIR TEMPERATURE

Typical Characteristics

6. RATIO OF DELTA REFERENCE VOLTAGE TO DELTA CATHODE

FIGURE #

VOLTAGE vs. FREE-AIR TEMPERATURE

11. EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-SECOND PERIOD

12. SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY

13. REFERENCE IMPEDANCE vs. FREQUENCY

14. PULSE RESPONSE

7. EQUIVALENT INPUT NOISE VOLTAGE vs. FREQUENCY

15. STABILITY BOUNDARY CONDITIONS

Application Information

FIGURE #

16. SHUNT REGULATOR

17. SINGLE-SUPPLY COMPARATOR WITH TEMPERATURE-COMPENSATED

THRESHOLD

18. HIGH CURRENT SHUNT REGULATOR

19. CROWBAR CIRCUIT

20. VOLTAGE MONITOR

21. PRECISION CONSTANT-CURRENT SINK

Rev. 1.3 9/99

4

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

CHARACTERISTIC CURVES

FIGURE 1. — REFERENCE VOLTAGE

FIGURE 2. — REFERENCE CURRENT

vs. FREE-AIR TEMPERATURE

2.60

2.58

5

V_REF= V_KA

I_K= 10mA

R1 =

¥

V_REF= 2550mV

2.56

I_K= 10mA

4

3

2

1

0

TL431/A

2.54

2.52

TL431B

2.50

2.48

TL431/A

V_REF= 2495mV

V_REF= 2440mV

TL431/A

2.46

2.44

TL431B

TL431/A

2.42

2.4

-50

-25

0

25

50

75

100

125

-50

-25

0

25

50

75

100

125

(T_A) Ambient Temperature - (°C)

FIGURE 3. — CATHODE CURRENT vs. CATHODE VOLTAGE

FIGURE 4. — CATHODE CURRENT vs. CATHODE VOLTAGE

150

800

V_KA= V_REF

T_A= 25°C

V_KA= V_REF

125

T_A= 25°C

100

600

75

50

25

I_MIN

400

0

200

0

TL431/A

-25

TL431B

-50

-75

-100

-200

-2

-1

0

1

2

3

-1

0

1

2

3

(V_KA) Cathode Voltage - (V)

Rev. 1.3 9/99

5

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

CHARACTERISTIC CURVES

FIGURE 5. — OFF-STATE CATHODE CURRENT

FIGURE 6. — RATIO OF DELTA REFERENCE VOLTAGE TO DELTA

vs. FREE-AIR TEMPERATURE

CATHODE VOLTAGE vs. FREE-AIR TEMPERATURE

-0.85

2.5

V_KA= 36V

_REF= 0

TL431/A

& TL431B

V_KA= 3V to 36V

V

-0.95

2

1.5

1

-1.05

-1.15

-1.25

-1.35

-1.45

0.5

0

-50

-25

0

25

50

75

100

125

-50

-25

0

25

50

75

100

125

(T_A) Ambient Temperature - (°C)

FIGURE 7. — EQUIVALENT INPUT NOISE VOLTAGE

vs. FREQUENCY

260

I_O= 10mA

T_A= 25°C

240

220

200

180

160

140

120

100

10

100

1k

10k

100k

(f) Frequency - (Hz)

Rev. 1.3 9/99

6

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

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R E C I S I O N

P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

PARAMETER MEASUREMENT INFORMATION

V_KA

Input

V_KA

Input

I_K

R₁

R₂

I_REF

V_REF

FIGURE 9 — TEST CIRCUIT FOR V_KA> V_REF

FIGURE 8 — TEST CIRCUIT FOR V_KA= V_REF

V_KA

Input

I_OFF

FIGURE 10 — TEST CIRCUIT FOR I_OFF

Rev. 1.3 9/99

7

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

P

R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

TYPICAL CHARACTERISTICS

6

f = 0.1 to 10Hz

I_K= 10mA

T_A= 25°C

5

4

3

2

1

0

-1

-2

-3

-4

-5

-6

0

2

4

6

8

10

(t) Time - (s)

FIGURE 11. — EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-SECOND PERIOD

19.1V

1k

V_CC

910

500µF

2000µF

V_CC

1µF

TL431/A

& TL431B (DUT)

TLE2027

A_V= 10V/mV

820

16

TLE2027

2.2µF

16k

1µF

33k

CRO

1M

A_V= 2V/V

0.1µF

V_EE

Test Circuit for 0.1Hz to 10Hz Equivalent Input Noise Voltage

Rev. 1.3 9/99

8

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

P

R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

TYPICAL CHARACTERISTICS

FIGURE 12. — SMALL-SIGNAL VOLTAGE AMPLIFICATION

vs. FREQUENCY

70

Output

I_K= 10mA

T_A= 25°C

60

50

40

30

20

10

0

I_K

230

15k

9µF

8.25k

GND

Test Circuit for Voltage Amplification

-10

10k

1M

10M

1k

100k

(f) Frequency - (Hz)

FIGURE 13. — REFERENCE IMPEDANCE vs. FREQUENCY

100

Output

I_K= 1mA to 100mA

T_A= 25°C

1k

I_K

10

50

1

GND

Test Circuit for Reference Impedance

0.1

1k

100k

1M

10M

10k

(f) Frequency - (Hz)

Rev. 1.3 9/99

9

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

P

R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

TYPICAL CHARACTERISTICS

FIGURE 14. — PULSE RESPONSE

6

5

4

3

Output

220

Pulse

Generator

f = 100kHz

50

2

1

0

3

2

GND

1

0

Test Circuit for Pulse Response

0

1

2

3

4

5

6

(t) Time - (µs)

FIGURE 15. — STABILITY BOUNDARY CONDITIONS

I_K

R1=10k

100

150

I_K= 10mA

T_A= 25°C

A V_KA= V_REF

B V_KA= 5V

C V_KA= 10V

D V_KA= 15V

90

80

70

60

50

40

30

20

10

0

C_L

B*

R2

V_BATT

Stable

C*

D*

A*

Test Circuit for Curve A

150

I_K

C_L

V_BATT

0.001

0.01

0.1

1

10

(C_L) Load Capacitance - (µF)

* The areas under the curves represent conditions that may cause the

device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to

establish the initial V_KAand I_Kconditions with C_L= 0. V_BATTand C_Lwere

then adjusted to determine the ranges of stability.

Test Circuit for Curves B, C, and D

Rev. 1.3 9/99

10

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

P

R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

APPLICATION INFORMATION

R (see Note)

V_BATT

V_O

V_BATT

I_K

R1 0.1%

TL431/A

& TL431B

V_O

TL431/A

& TL431B

V_REF

V_ON2V

V_OFFV_BATT

Input

R2 0.1%

GND

R1

R2

V_O= 1 +

V

REF

*

Note: R should provide ≥ 1mA cathode current to

the TL431/A & TL1431 at minimum V_BATT

.

FIGURE 16 — SHUNT REGULATOR

FIGURE 17 — SINGLE-SUPPLY COMPARATOR WITH

TEMPERATURE-COMPENSATED THRESHOLD

V_BATT

V_O

V_BATT

V_O

R1

TL431/A

& TL431B

C

(see Note)

TL431/A

& TL431B

R2

Note: Refer to the stability boundary conditions in

Figure 15 to determine allowable values for C.

R1

R2

V_O= 1 +

V

REF

*

FIGURE 18 — HIGH CURRENT SHUNT REGULATOR

FIGURE 19 — CROWBAR CIRCUIT

Rev. 1.3 9/99

11

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

TL431/TL431A/TL431B

P

R E C I S I O N P R O G R A M M A B L E R E F E R E N C E S

P R O D U C T I O N D A T A S H E E T

APPLICATION INFORMATION

R3 (see Note)

V_BATT

12V

R1A

I_O

R4

(Note)

TL431/A

& TL431B

TL431/A

& TL431B

R_S

0.1%

R2A

R2B

R1B

R2B

Low Limit = 1 +

High Limit = 1 +

V

*

REF

LED On when

Low Limit < V_BATT< High Limit

R1B

R2B

V_REF

R_S

REF

I_O=

Note: R3 and R4 are selected to provide the desired LED intensity and≥ 1mA

cathode current to the TL431/A & TL431B at the available V+.

FIGURE 20 — VOLTAGE MONITOR

FIGURE 21 — PRECISION CONTANT-CURRENT SINK

PRODUCTIONDATA-InformationcontainedinthisdocumentisproprietarytoLinFinity, andiscurrentasofpublicationdate. Thisdocument

may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of

all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.

Rev. 1.3 9/99

12


型号：	TL431BIDM-TR
厂家：	Microsemi
描述：	Three Terminal Voltage Reference, 1 Output, Trim/Adjustable, BIPolar, PDSO8, LEAD FREE, PLASTIC, SOIC-8
文件：	总12页 (文件大小：211K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TL431BIDM-TR [MICROSEMI]

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