R1140Q231D-TR [ETC]

Positive Fixed Voltage Regulator ; 正固定电压稳压器\n


型号：	R1140Q231D-TR
厂家：	ETC
描述：	Positive Fixed Voltage Regulator 正固定电压稳压器\n 稳压器
文件：	总15页 (文件大小：376K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

'2001.3.1

SC82 120mA LDO REGULATOR

R1140Q SERIES

■ OUTLINE

The R1140Q Series are voltage regulator ICs with high output voltage accuracy, low supply current, low ON-resistance, and

high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error

amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.

These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient

response of the R1140Q Series are excellent, thus these ICs are very suitable for the power supply for hand-held

communication equipment.

The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super

Mini-mold) package, high density mounting of the ICs on boards is possible.

■ FEATURES

Ultra-Low Supply Current......................................... TYP. 75µA

Standby Mode ........................................................... TYP. 0.1µA

Low Dropout Voltage ................................................ TYP. 0.15V(I^OUT=100mA Output Voltage=3.0V Type)

High Ripple Rejection............................................... TYP. 75dB(f=1kHz)

Low Temperature-Drift Coefficient of Output Voltage TYP. ±100ppm/°C

Excellent Line Regulation......................................... TYP. 0.05%/V

High Output Voltage Accuracy.................................. ±2.0%

Excellent Dynamic Response

Small Package ..........................................................SC-82AB(Super Mini-mold)

Output Voltage...........................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is

possible

Built-in chip enable circuit (B/D: active high)

Built-in fold-back protection circuit..........................TYP. 40mA (Current at short mode)

■ APPLICATIONS

Power source for cellular phones such as GSM, CDMA and various kinds of PCS.

Power source for electrical appliances such as cameras, VCRs and camcorders.

Power source for battery-powered equipment.

Rev. 1.11

- 1 -

■ BLOCK DIAGRAM

R1140QXX1B

R1140QXX1D

OUT

Vref

GND

Vref

GND

Current Limit

■ SELECTION GUIDE

The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The selection can be made

by designating the part number as shown below;

R1140QXX1X-XX

←Part Number

↑ ↑ ↑ ↑

b c d

Code

Contents

Designation of Package Type :

Q:SC82-AB (Super Mini-mold)

Setting Output Voltage (V^OUT) :

Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible.

Designation of Mask Option :

B: Without auto discharge function at OFF state.

D: With auto discharge function at OFF state.

Designation of Taping Type :

Ex. TR, TL (refer to Taping Specifications; TR type is the standard direction.)

Rev. 1.11

- 2 -

■ PIN CONFIGURATION

SC-82AB

Mark side

■ PIN DESCRIPTION

Pin No.

Symbol

V^OUT

Description

Output pin

GND

Ground Pin

Chip Enable Pin

Input Pin

V^DD

■ ABSOLUTE MAXIMUM RATINGS

Item

Input Voltage

Symbol

Rating

6.5

Unit

V^IN

V^CE

Input Voltage(CE Pin)

Output Voltage

-0.3 ~ V^IN+0.3

140

V^OUT

IOUT

P^D

Output Current

°C

Power Dissipation

150

Operating Temperature Range

Storage Temperature Range

Topt

Tstg

-40 ~ 85

-55 ~ 125

Rev. 1.11

- 3 -

■ ELECTRICAL CHARACTERISTICS

■

R1140QXX1B/R1140QXX1D

Topt=25°C

Symbol

Item

Conditions

V^IN= Set V^OUT+1V

1mA ≤ I^OUT≤ 30mA

V^IN- V^OUT= 1.0V

V^IN= Set V^OUT+1V

1mA ≤ I^OUT≤ 120mA

MIN.

V^OUT

×0.98

120

TYP.

MAX.

V^OUT

×1.02

Unit

V^OUT

Output Voltage

Output Current

Load Regulation

I^OUT

∆V^OUT/∆I^OUT

Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT

VOLTAGE

V^DIF

Dropout Voltage

I^SS

Istandby

Supply Current

Supply Current (Standby)

V^IN= Set V^OUT+1V

V^IN= V^CE= Set V^OUT+1V

0.1

150

1.0

µA

Set V^OUT+0.5V ≤ V^IN≤ 6V

I^OUT= 30mA

(In case that VOUT≤1.6V,

2.2V≤ VIN ≤ 6V)

f = 1kHz, Ripple 0.5Vp-p

V^IN= Set V^OUT+1V,

I^OUT= 30mA

Line Regulation

Ripple Rejection

0.05

0.20

%/V

∆V^OUT/∆V^IN

(In case that VOUT≤1.7V,

VIN – VOUT=1.2V)

V^IN

Input Voltage

2.2

6.0

I^OUT= 30mA

-40°C ≤ Topt ≤ 85°C

V^OUT= 0V

ppm

/°C

Output Voltage

Temperature Coefficient

Short Current Limit

±100

∆V^OUT/∆T

Ilim

R^PU

Pull-up Resistance

Input Voltage “H”

Input Voltage “L”

1.5

0.0

V^IN

0.3

MΩ

V^CEH

V^CEL

Output Noise

Low Output Nch Tr. ON

Resistance (of D version)

BW=10Hz to 100kHz

VCE=0V

µVrms

RLOW

Ω

■

ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE

Topt = 25°C

Dropout Voltage

Output Voltage

DIF

(V)

OUT

(V)

Condition

TYP.

0.36

0.30

0.28

0.24

0.18

MAX.

0.70

0.50

0.45

0.40

0.30

1.5 ≤ V^OUT≤ 1.6

1.7 ≤ V^OUT≤ 1.8

1.9 ≤ V^OUT≤ 2.0

2.1 ≤ V^OUT≤ 2.7

2.8 ≤ V^OUT≤ 4.0

I^OUT= 120mA

Rev. 1.11

- 4 -

■ TECHNICAL NOTES

When using these ICs, consider the following points:

Phase Compensation

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be

sure to use a 2.2µF or more capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance).

(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation,

the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the

PCB.)

PCB Layout

Make VDD and GND line sufficient. When the impedance of these is high, it would be a cause of picking up the noise or

unstable operation. Connect a capacitor with as much as 1.0µF capacitor between VDD and GND pin as close as possible.

Set external components, especially output capacitor as close as possible to the ICs and make wiring shortest.

■ TEST CIRCUITS

V_OUT

R1140Q

SERIES

V_OUT

I_OUT

GND

C1 = Tantal1.0µF

C2 = Tantal2.2µF

Fig.1 Standard test Circuit

V_OUT

R1140Q

SERIES

I _SS

GND

C1 = Tantal1.0 F

C2 = Tantal2.2 F

Fig.2 Supply Current Test Circuit

Rev. 1.11

- 5 -

V_DD

^OR^UT1140Q

SERIES

I _OUT

Pulse

Generator

GND

Fig.3 Ripple Rejection, Line Transient Response Test Circuit

OUT

R1140Q

OUTb

SERIES

GND CE

OUTa

C1 = Tantal1.0µF

C2 = Tantal2.2µF

Fig.4 Load Transient Response Test Circuit

■ TYPICAL APPLICATION

OUT

R1140Q

SERIES

GND

(External Components)

Output Capacitor; Tantalum Type

Rev. 1.11

- 6 -

■ TYPICAL CHARACTERISTICS

1) Output Voltage vs. Output Current

R1140Q151X

R1140Q281X

2.5

1.6

4.8V

3.5V

1.4

2.0V

3.3V

VIN=1.8V

1.2

VIN=3.1V

1.5

0.8

3.8V

2.5V

0.6

0.4

0.2

0.5

0.05

0.1

0.15

0.2

0.25

0.3

0.05

0.1

0.15

0.2

0.25

0.3

Output Current IOUT (A)

OUT

Output Current I

(A)

R1140Q401X

4.5

6.0V

4.5V

3.5

VIN=4.3V

2.5

5.0V

1.5

0.5

0.05

0.1

0.15

0.2

0.25

0.3

Output Current I^OUT(A)

2) Output Voltage vs. Input Voltage

R1140Q151X

1.6

R1140Q281X

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

1.5

1.4

1.3

1.2

1.1

1mA

30mA

50mA

30mA

50mA

Input Voltage V^IN(V)

Input Voltage VIN(V)

Rev. 1.11

- 7 -

R1140Q40X

4.2

3.8

3.6

3.4

3.2

1mA

30mA

50mA

Input Voltage V (V)

3) Dropout Voltage vs. Output Current

R1140Q151X

1.2

R1140Q281X

0.25

0.2

0.15

0.1

0.05

85°C

25°C

-40°C

85°C

25°C

-40°C

0.8

0.6

0.4

0.2

100

120

100

120

Output Current IOUT(mA)

R1140Q401X

0.2

0.18

0.16

0.14

0.12

0.1

85°C

25°C

-40°C

0.08

0.06

0.04

0.02

100

120

Output Current I^OUT(mA)

Rev. 1.11

- 8 -

4) Output Voltage vs. Temperature

R1140Q151X

1.54

R1140Q281X

2.86

2.84

2.82

2.80

2.78

2.76

2.74

1.53

1.52

1.51

1.50

1.49

1.48

1.47

1.46

-50

-25

(°C)

100

-50

-25

(°C)

100

Temperature Topt

R1140Q401X

4.08

4.06

4.04

4.02

4.00

3.98

3.96

3.94

3.92

-50

-25

(°C)

100

Temperature Topt

5) Supply Current vs. Input Voltage

R1140Q151X

R1140Q281X

Input Voltage VIN(V)

Input Voltage V (V)

Rev. 1.11

- 9 -

R1140Q401X

Input Voltage V^IN(V)

6) Supply Current vs. Temperature

V^IN=2.5V

V^IN=3.8V

R1140Q151X

R1140Q281X

200

160

120

160

120

-50

100

-50

100

(°C)

Temperature Topt (°C)

Temperature Topt

V^IN=5.0V

R1140Q401X

200

160

120

-50

(°C)

100

Temperature Topt

Rev. 1.11

- 10 -

7) Dropout Voltage vs. Set Output Voltage

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

10mA

30mA

50mA

120mA

1.5

2.5

3.5

Set Output Voltage Vreg(V)

8) Ripple Rejection vs. Frequency

Vin=2.5VDC+0.5Vp-p

R1140Q151X

Cout=tantal 2.2uF , Topt=25°C

Vin=2.5VDC+0.5Vp-p

R1140Q151X

-90

Cout=tantal 1.0uF , Topt=25

-90

-80

-70

-60

-50

-40

-30

-20

-10

-80

-70

-60

-50

-40

50mA

1mA

-30

50mA

-20

1mA

30mA

-10

0.1

1.0

10.0

100.0

0.1

1.0

10.0

Frequency(kHz)

100.0

Frequency(kHz)

Vin=3.8VDC+0.5Vp-p

Cout=tantal 1.0uF , Topt=25°C

Vin=3.8VDC+0.5Vp-p

Cout=tantal 2.2uF , Topt=25°C

R1140Q281X

-90

-80

-70

-60

-50

-40

-30

-20

-10

-90

-80

-70

-60

-50

-40

-30

-20

-10

50mA

1mA

50mA

1mA

30mA

0.1

1.0

10.0

100.0

0.1

1.0

10.0

100.0

Frequency (kHz)

Frequency(kHz)

Rev. 1.11

- 11 -

Vin=5.0VDC+0.5Vp-p

R1140Q401X

Cout=tantal 1.0uF , Topt=25°C

Cout=tantal 2.2uF , Topt=25°C

-90

-80

-70

-60

-50

-40

-30

-20

-10

-90

-80

-70

-60

-50

-40

-30

-20

-10

50mA

1mA

50mA

1mA

30mA

0.1

1.0

10.0

100.0

0.1

1.0

10.0

100.0

Frequency(kHz)

9) Ripple Rejection vs. Input Bias

R1140Q281X Iout=1mA

R1140Q281X Iout=30mA

100

10K

100K

10K

100K

2.8

2.9

3.1

3.2

3.3

2.8

2.9

3.1

3.2

3.3

Input Voltage V^IN(V)

R1140Q281X Iout=50mA

10K

100K

2.8

2.9

3.1

3.2

3.3

Input Voltage V^IN(V)

Rev. 1.11

- 12 -

10) Input Transient Response

R1140Q281X

VIN=3.8V<-->4.8V

IOUT=30mA,COUT=1.0µF

tr/tf=5µF

2.83

2.82

VIN

2.81

2.8

2.79

2.78

VOUT

2.77

100

Time t(us)

R1140Q281X

VIN=3.8V<-->4.8V

IOUT=30mA,COUT=2.2µF

tr/tf=5µF

2.83

2.82

2.81

2.8

VIN

2.79

2.78

2.77

VOUT

100

Time t(us)

R1140Q281X

VIN=3.8V<-->4.8V

IOUT=30mA,COUT=6.8µF

tr/tf=5µF

2.83

2.82

2.81

2.8

VIN

2.79

2.78

2.77

VOUT

100

Time t(us)

Rev. 1.11

- 13 -

11) Load Transient Response

R1140Q281X

VIN=3.8V

150

100

CIN =Tantal 1.0µF

COUT=Tantal1.0µF

tr/tf=5µF

2.95

IOUT

2.9

2.85

VOUT

2.8

2.75

2.7

-50

-100

-150

-4

-2

Time t(us)

Vin=3.8V

Cin=Tantal 1.0uF

Cout=Tantal 2.2uF

R1140Q281X

2.95

2.9

150

100

IOUT

2.85

2.8

VOUT

-50

-100

-150

2.75

2.7

-4

-2

Time t(us)

Vin=3.8V

Cin=Tantal 1.0uF

Cout=Tantal 6.8uF

R1140Q281X

2.95

2.9

150

100

IOUT

2.85

2.8

VOUT

-50

-100

-150

2.75

2.7

-4

-2

Time t(us)

Rev. 1.11

- 14 -

■ TECHNICAL NOTES

When using these ICs, consider the following points:

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be

sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the

range described as follows:

The relations between I^OUT(Output Current) and ESR of Output Capacitor are shown below. The conditions when the white

noise level is under 40µV(Avg.) are marked as the hatched area in the graph.

(1) VIN=3.8V

(2) Frequency band: 10Hz to 2MHz

(3) Temperature: 25°C

R1140Q281X VIN=3.8V CIN=Ceramic 1µF,

COUT=Ceramic 2.2µF

R1140Q281X VIN=3.8V CIN=Ceramic 1µF,

COUT=Ceramic 2.2µF

100

0.1

0.01

0.1

0.01

(mA)

100

120

100

120

OUT1

Load Current I

Load Current I^OUT1(mA)

Rev. 1.11

- 15 -

R1140Q231D-TR [ETC]

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