LB1183BL-12-AG6-R [UTC]

300mA CMOS LDO;


型号：	LB1183BL-12-AG6-R
厂家：	Unisonic Technologies
描述：	300mA CMOS LDO
文件：	总4页 (文件大小：184K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

L1183B

CMOS IC

300mA CMOS LDO



DESCRIPTION

The UTC L1183B is a positive, linear regulator. One of the feature

is the very low ground current typically as low as 30μA, and the

dropout voltage is extremely low. For stable operation, the output

capacitance value should be 2.2μF or more.

The internal circuit includes thermal shutdown and current

fold-back device to prevent device failure when the circuit is

operated in bad conditions.

SOT-26

The UTC L1183B is generally suitable for applications, such as

instrumentation, portable electronics, wireless devices, cordless

phones, PC peripherals, battery powered widgets.



FEATURES

* Very Low Dropout Voltage

* Guaranteed Output Current: 300mA

* Quiescent Current: 30μA (TYP.)

* Typical Accuracy Within 2%

* Over-Temperature Shutdown

* Current Limiting

* Short Circuit Current Fold-Back

* Power Good Detector (6 pin version only)

* Power-Saving Shutdown Mode

* Adjustable Output Voltages

* Low Temperature Coefficient

* RoHS-Compliant Product



ORDERING INFORMATION

Ordering Number

Package

SOT-26

Packing

Tape Reel

Lead Free

Halogen Free

L1183BG-xx-AG6-R

Note: xx: Output Voltage, refer to Marking Information.

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QW-R502-422.C

L1183B

CMOS IC



MARKING INFORMATION

PACKAGE

VOLTAGE CODE

MARKING

12 :1.2V

15 :1.5V

28 :2.8V

31 :3.1V

33 :3.3V

G: Halogen Free

L: Lead Free

SXXBG

SOT-26

Voltage Code



PIN CONFIGURATION

PIN DESCRIPTION

PIN NO

PIN NAME

V_IN

DESCRIPTION

Input voltage pin

Ground connection pin

Enable pin

GND

Power-Good output

ADJ

Feedback output voltage for adjustable device

LDO voltage regulator output pin

V_OUT



BLOCK DIAGRAM

Thermal

Overcurrent

Shutdown

OUT

ADJ

V_REF×110%

AMP

V_ref=1.2V

V_REF×90%

GND

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L1183B

CMOS IC



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

V_IN

Input, Output Voltage

Output Current

GND - 0.3 ~ V_IN+ 0.3

I_OUT

P_D

P_D/ (V_IN- V_OUT

)

°C

Power Dissipation

400

Operating Temperature

Junction Temperature

T_OPR

T_J

-40 ~ +85

-40 ~ +125

°C

Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

2. Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.



THERMAL DATA

PARAMETER

SYMBOL

θ_JA

RATINGS

280

UNIT

°C/W

Junction to Ambient

Junction to Case

θ_JC

140



ELECTRICAL CHARACTERISTICS (T_A= 25°C, V_IN=5V unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Input Voltage

V_IN

Note

-3

Output Voltage

V_OUT

I_OUT=1mA

I_OUT=300mA

_OUT=V_ONOM

1.2V≤V_O(NOM)≤2.0V

2.0V<V_O(NOM)≤2.8V

2.8V<V_O(NOM)<3.8V

1300

400

300

Dropout Voltage

V_D

-2.0%

Output Current

I_OUT

I_LIMIT

I_SC

V_OUT>1.2V

V_OUT<0.8V

I_OUT=0mA

300

μA

Current Limit

300 450

Short Circuit Current

Quiescent Current

Ground Pin Current

150 300

I_Q

I_GND

I_OUT=1mA ~ 300mA

_OUT=5mA

V_IN=V_O+1 ~ V_O+2

μA

V_OUT< 2.0V

0.15

Line Regulation

REG_LINE

V_OUT≥ 2.0V

0.02 0.1

Load Regulation

REG_LOADI_OUT=1mA ~ 300mA

0.2

150

Over Temperature Shutdown

Over Temperature Hysterisis

V_OTemperature Coefficient

OTS

OTH

°C

ppm/°C

f=1kHz

_OUT=100mA

Power Supply Rejection

PSRR

f=10kHz

f=100kHz

C_O=2.2μF

f=10Hz ~ 100kHz

I_O=10mA,C_BYP=0μF

Output Voltage Noise

e_N

C_O=2.2μF

μVrms

ADJ Input Bias Current

ADJ Reference Voltage

I_ADJ

V_REF

V_EH

V_EL

μA

1.176 1.2 1.224

V_IN=2.7V ~ 7V

2.0

V_IN

0.4

0.1

0.5

EN Input Threshold

I_EH

V_EN=V_IN, V_IN=2.7V ~ 7V

V_EN=0V, V_IN=2.7V ~ 7V

V_IN=5V, V_O=0V, V_EN<V_EL

I_O=35μA,V_EN<V_EL

μA

EN Input Bias Current

I_EL

Shutdown Supply Current

Shutdown Output Voltage

Output Under Voltage

Output Over Voltage

PG Leakage Current

PG Voltage Rating

I_SD

0.5

V_OUT,SD

V_UV

V_OV

I_LC

0.1

85 %V_O(NOM)

%V_O(NOM)

115

V_PG=7V

μA

V_PG

V_OL

V_Oin regulation

I_SINK=0.4mA

PG Voltage Low

0.4

Note: V_IN(MIN)=V_OUT+V_D

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L1183B

CMOS IC



ADVANCED APPLICATION

V_IN=3.3V

100K

V_IN

V_OUT

1µ

100

100µ

V_O=1.2V

ADJ

100µ

GND

10K



TYPICAL APPLICATION CIRCUIT

OUT

ADJ

100p

2.2µF

GND

1µF

V_OUT= 1.2 (R1 +R2)/R2

C2 is unnecessary when R1 or R2 < 20K

PG pin is only available in the SOT-26 package option

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

UNISONIC TECHNOLOGIES CO., LTD

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