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Key Specifications
Part Number Description Status SubFamily Regulated Outputs(.) Output Options Iout (Max)(mA) Vin (Min)(V) Vin (Max)(V) Fixed Output Options(V) Vout (Min)(V) Vout (Max)(V) Enable Under Voltage Lockout Pin/Package EV Kit Available?
UM1540S 5V Input, Low Quiescent Current Linear Regulator ACTIVE Ultra Low Quiescent Current LDO 1 Fixed Output 300 1.8 6 1.2 5 Yes No 5/SOT23 Y
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 Product Description
 
The UM1540S series is a set of high input voltage low quiescent current regulator implemented in CMOS technology. They can deliver 300mA output current and allow an input voltage as high as 6V. They are available with several fixed output voltages ranging from 1.2V to 5.0V. CMOS technology ensures low voltage drop and low quiescent current.
The UM1540S is available in SOT23-5 package.

Features
 
- Input Voltage Range: 1.8V to 6V
- 300mA Guaranteed Output Current
- Low Dropout Voltage:
250mV (Typical) at 200mA
- Low Quiescent Current:
1µA@VIN=5V (Typical)
- Low Noise: 500µVRMS (10Hz to 100kHz)
- Available Fixed Output Voltage from 1.2V to 5.0V with 0.1V Step
- With Shutdown Control
- Output Current Limit
- Low Profile SOT23-5 package
  
Typical Application Circuit
 
 

Applications
 
- Communication Equipments
-Audio/Video Equipments
- Portable Games
- Portable AV Equipments
- Battery-Powered Equipments
 
Pin Configurations  
                

                  UM1540S
 
Ordering Information
 

Part Number

Output Voltage

Marking Code

Package

Shipping Qty

UM1540S-12

1.2V

5F3

SOT23-5

3000pcs/7Inch

Tape & Reel

UM1540S-13

1.3V

5FB

UM1540S-15

1.5V

5FC

UM1540S-18

1.8V

5FD

UM1540S-25

2.5V

5FE

UM1540S-27

2.7V

5FF

UM1540S-28

2.8V

5FH

UM1540S-30

3.0V

5FL

UM1540S-33

3.3V

5FM

UM1540S-35

3.5V

5FJ

UM1540S-36

3.6V

5FK

UM1540S-38

3.8V

5FN

UM1540S-40

4.0V

5FP

UM1540S-42

4.2V

5FQ

UM1540S-43

4.3V

5FR

UM1540S-45

4.5V

5FS

UM1540S-47

4.7V

5FT

UM1540S-48

4.8V

5FY

UM1540S-50

5.0V

5FU

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