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LR1102AG-35-AF5-R

更新时间：2025-03-16 23:20:32

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描述：LOW NOISE 150mA LDO REGULATOR

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LR1102AG-35-AF5-R 概述

LOW NOISE 150mA LDO REGULATOR

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UNISONIC TECHNOLOGIES CO., LTD

LR1102

CMOS IC

LOW NOISE 150mA LDO

REGULATOR



DESCRIPTION

The UTC LR1102 families are CMOS-based voltage

regulator ICs with extremely low supply current, high output

voltage accuracy, high Ripple Rejection and chip enable circuit.

These ICs performance are excellent and with SOT-25

package, thus these ICs are very suitable for hand-held

communication equipment.



FEATURES

* Ultra-Low Supply Current : Typ. 35µA

* Standby Mode: Typ. 0.1µA

* Low Dropout Voltage: Typ. 0.2V (I_OUT= 100mA)

* Excellent Line Regulation: Typ. 0.05%/V

* High Ripple Rejection: Typ. 70dB (f = 1kHz)



ORDERING INFORMATION

Ordering Number

Halogen Free

Pin Assignment

Package

SOT-25

Packing

LR1102XG-xx-AF5-R

Tape Reel

Note: Pin Assignment: I: V_DDO: V_OUTG: GND C: CE/ CE N: No Connection

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LR1102

CMOS IC



MARKING INFORMATION

PACKAGE

VOLTAGE CODE

MARKING

25:2.5V

27:2.7V

28:2.8V

2J:2.85V

30:3.0V

33:3.3V

35:3.5V

50:5.0V

LR1102A

18: 1.8V

25:2.5V

27:2.7V

28:2.8V

2J:2.85V

30:3.0V

33:3.3V

35:3.5V

50:5.0V

LR1102B



PIN DESCRIPTION

PIN NO.

PIN NAME

V_DD

DESCRIPTION

Input Pin

GND

Ground Pin

Chip Enable Pin

No Connection

Output Pin

CE/CE

V_OUT

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LR1102

CMOS IC



BLOCK DIAGRAM

LR1102B-XX

V_OUT

V_DD

VREF

GND

Current Limit

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LR1102

CMOS IC



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

V_IN

RATINGS

UNIT

Input Voltage

V_CE

-0.3 ~ V_IN+0.3

200

Output Voltage

Output Current

Power Dissipation

V_OUT

I_OUT

°С

P_D

250

Junction Temperature

Operating Temperature

Storage Temperature

T_J

+125

T_OPR

T_STG

-40 ~ +85

-55 ~ +125

Note: 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.



ELECTRICAL CHARACTERISTICS

LR1102A-XX (T_OPR=25°С)

PARAMETER

SYMBOL

V_OUT

TEST CONDITIONS

V_IN=Set V_OUT+ 1V, 1mA≤I_OUT≤30mA

V_IN=Set V_OUT+ 1V, 0mA≤I_OUT≤150mA

V_IN=9V, 0mA≤I_OUT≤150mA

MIN

TYP

MAX

UNIT

V_OUTx0.98

V_OUTx0.97

V_OUTx1.02

V_OUTx1.03

Output Voltage

Output Current

I_OUT

Refer to the Electrical Characteristics by Output Voltage

Load Regulation

Dropout Voltage

Supply Current

∆V_OUT/∆I_OUTV_IN=Set V_OUT+ 1V, 1mA≤I_OUT≤80mA

V_DIF

I_SS

V_IN=Set V_OUT+ 1V

0.1

1.0

μA

Supply Current (Standby)

Line Regulation

I_ST-BY

V_IN=V_CE=Set V_OUT+ 1V

∆V_OUT/∆V_INSet V_OUT+ 0.5V≤V_IN≤8V, I_OUT=30mA

0.05

0.20

%/V

f=1kHz, Ripple 0.5Vp-p,

V_IN=Set V_OUT+ 1V

Ripple Rejection

Input Voltage

V_IN

Output Voltage

∆V_OUT/∆T I_OUT= 30mA, -20°С≤T_OPR≤85°С

±100

ppm/°С

Temperature Coefficient

Short Current Limit

CE Pull-up Resistance

CE Input Voltage ”H”

CE Input Voltage ”L”

Output Noise

I_LIMIT

R_PU

V_CEH

V_CEL

V_OUT=0V

200

5.0

MΩ

2.5

1.5

10.0

V_IN

0.00

0.25

B_W= 10Hz ~ 100kHz

μVrms

LR1102B-XX (T_OPR=25°С)

PARAMETER

Output Voltage

SYMBOL

V_OUT

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V_IN=Set V_OUT+ 1V, 1mA≤I_OUT≤30mA

V_IN=Set V_OUT+ 1V, 0mA≤I_OUT≤150mA

V_IN=9V, 0mA≤I_OUT≤150mA

V_OUTx0.98

V_OUTx0.97

V_OUTx1.02

V_OUTx1.03

Output Voltage

V_OUT

Output Voltage

V_OUT

Output Current

I_OUT

Refer to the Electrical Characteristics by Output Voltage

Load Regulation

Dropout Voltage

Supply Current

∆V_OUT/∆I_OUTV_IN=Set V_OUT+ 1V, 1mA≤I_OUT≤80mA

V_DIF

I_SS

V_IN=Set V_OUT+ 1V

0.1

1.0

μA

Supply Current (Standby)

Line Regulation

I_ST-BY

V_IN= Set V_OUT+ 1V, V_CE=GND

∆V_OUT/∆V_INSet V_OUT+ 0.5V≤V_IN≤8V, I_OUT=30mA

0.05

0.20

%/V

f=1kHz, Ripple 0.5Vp-p

V_IN=Set V_OUT+ 1V

Ripple Rejection

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LR1102

CMOS IC



ELECTRICAL CHARACTERISTICS(Cont.)

PARAMETER

SYMBOL

V_IN

TEST CONDITIONS

MIN

TYP

MAX UNIT

Input Voltage

Output Voltage

∆V_OUT/∆T I_OUT= 30mA, -20°С≤T_OPR≤85°С

±100

ppm/°С

Temperature Coefficient

Short Current Limit

CE Pull-down Resistance

CE Input Voltage ”H”

CE Input Voltage ”L”

Output Noise

I_LIMIT

R_PD

V_CEH

V_CEL

V_OUT=0V

200

5.0

MΩ

2.5

1.5

10.0

V_IN

0.00

0.25

B_W= 10Hz ~ 100kHz

μVrms



ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE

(T_OPR=25°С)

PARAMETER

Output Current

SYMBOL

I_OUT

TEST CONDITIONS

MIN

150

TYP

MAX UNIT

V_IN-V_OUT= 1.0V

1.8≤V_OUT≤5.0

1.8≤V_OUT≤2.7

2.8≤V_OUT≤3.3

3.4≤V_OUT≤5.0

0.18

0.15

0.30

0.25

0.22

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LR1102

CMOS IC



TEST CIRCUITS

V_DD

V_OUT

V_DD

V_OUT

OUT

UTC LR1102-XX

IOUT

P.G

GND

1µF

Fig.3 Ripple Rejection, Line Transient

Response Test Circuit

Fig.4 Load Transient Response Test Circuit

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LR1102

CMOS IC



TYPICAL APPLICATION

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LR1102

CMOS IC



TYPICAL CHARACTERISTICS

1. Output Voltage vs. Output Current

2. Dropout Voltage vs. Output Current

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LR1102

CMOS IC



TYPICAL CHARACTERISTICS(Cont.)

3. Output Voltage vs. Temperature

LR1102-5.0V

5.10

VIN = 6.0V

I^OUT= 30mA

5.08

5.06

5.04

5.02

5.00

4.98

4.96

4.94

4.92

4.90

100

-50

-25

Temperature, T^OPR(°С)

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LR1102

CMOS IC



TYPICAL CHARACTERISTICS(Cont.)

4. Supply Current vs. Input Voltage

5. Supply Current vs. Temperature

LR1102-XX

VIN = VOUT+1V

-50

Temperature, TOPR (°С)

100

6. Dropout Voltage vs. Set Output Voltage

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LR1102

CMOS IC



TYPICAL CHARACTERISTICS(Cont.)

7. Ripple Rejection vs. Frequency

8. Ripple Rejection vs. Input Voltage (DC bias)

LR1102-3.0V

IOUT = 10mA

COUT = 2.2μF

IOUT = 1mA

COUT = 2.2μF

f = 400Hz

f = 1kHz

f = 10kHz

3.4

f = 10kHz

3.1

3.2

3.3

3.5

3.2

3.3

3.4

3.5

3.1

Input Voltage, VIN (V)

9. Load Transient Response

LR1102-3.0V

150

100

3.4

3.3

VIN = 4V

CIN = Tantalun 1μF

COUT =Tantalum 4.7μF

Output Current

Output Voltage

3.2

3.1

3.0

2.9

2.8

-50

-100

-150

Time, t (μs)

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LR1102

CMOS IC

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.

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