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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?
UM1540DB 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 4/DFN 1.0×1.0 Y
View All>>  Product Description
 
The UM1540DB 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 UM1540DB is available in  DFN4 1.0×1.0 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  DFN4 1.0×1.0 package
  
Typical Application Circuit
 

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

     
                
                  UM1540DB
 
Ordering Information
 

Part Number

Output Voltage

Marking Code

Package

Shipping Qty

UM1540DB-12

1.2V

HC

 DFN4 1.0×1.0

3000pcs/7Inch

Tape & Reel

UM1540DB-13

1.3V

FC

UM1540DB-15

1.5V

FD

UM1540DB-18

1.8V

FE

UM1540DB-25

2.5V

FF

UM1540DB-27

2.7V

FG

UM1540DB-28

2.8V

FH

UM1540DB-30

3.0V

FJ

UM1540DB-33

3.3V

FK

UM1540DB-35

3.5V

FL

UM1540DB-36

3.6V

FN

UM1540DB-38

3.8V

FP

UM1540DB-40

4.0V

FQ

UM1540DB-42

4.2V

FR

UM1540DB-43

4.3V

FS

UM1540DB-45

4.5V

FT

UM1540DB-47

4.7V

FU

UM1540DB-48

4.8V

FV

UM1540DB-50

5.0V

FZ

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