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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?
UM1431S-xx 30V Input, 100mA Current Limit, Micropower Linear Regulator ACTIVE High Input Voltage LDO 1 Fixed Output 100 3.6 30 2 6 No No 3/SOT23 Y
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Product Description
 
The UM1431/1441 series are high input voltage low quiescent current regulators implemented in CMOS technology. It can accept input voltage as high as 30V with 100mA output current limit. The output voltages are selectable in 100mV steps within a range of 2.0V to 6.0V. 100mA output current limiting is built in to provide protection for the regulators against fault conditions. CMOS technology ensures low voltage drop and low quiescent current.
With a chip enable control pin, the UM1441 can turn off the output and greatly reduce the power consumption by setting the enable pin low.
The UM1431 is available in SOT23-3, SOT23-5 and SOT89-3 packages. The UM1441 is available in SOT23-5 and SOT89-5 packages.
 
Features
 
- Input Voltage Range: 3.6V to 30V
- 100mA Output Current Limit
- ±3% Voltage Accuracy at 30mA
- Low Dropout Voltage:
  250mV (Typical) at 30mA
- Low Quiescent Current:
  5.8μA@VIN=30V (Typical)
- Available Fixed Output Voltage from 2.0V to 6.0V with 0.1V Step
- With Enable Control (UM1441S-xx, UM1441Y-xx)
- Output Current Limit
- UM1431: Low Profile SOT23-3, SOT23-5 and SOT89-3 Packages
  UM1441: Low Profile SOT23-5 and SOT89-5 Packages
 
Typical Application Circuit

 
 
Applications
 
- Communication Equipment
- Audio/Video Equipment
- Industrial Control
- Infotainment 

Pin Configurations  
                
                        UM1431S-xx
 
Naming Information

 
Ordering Information

Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1431S-20
2.0V
SOT23-3
4KA
3000pcs/7Inch
Tape & Reel
UM1431S-21
2.1V
4KB
UM1431S-22
2.2V
4K2
UM1431S-23
2.3V
4K3
UM1431S-24
2.4V
4K4
UM1431S-25
2.5V
4K5
UM1431S-26
2.6V
4K6
UM1431S-27
2.7V
4K7
UM1431S-28
2.8V
4K8
UM1431S-29
2.9V
4K9
UM1431S-30
3.0V
4KC
UM1431S-31
3.1V
4KD
UM1431S-32
3.2V
4KE
UM1431S-33
3.3V
4KF
UM1431S-34
3.4V
4KH
UM1431S-35
3.5V
4KL
UM1431S-36
3.6V
4KM
UM1431S-37
3.7V
4KJ
UM1431S-38
3.8V
4KK
UM1431S-39
3.9V
4KN
UM1431S-40
4.0V
4KP
UM1431S-41
4.1V
4KQ
UM1431S-42
4.2V
4KR
UM1431S-43
4.3V
4KS
UM1431S-44
4.4V
4KT
UM1431S-45
4.5V
4KY
UM1431S-46
4.6V
4KU
UM1431S-47
4.7V
4KZ
UM1431S-48
4.8V
4NA
UM1431S-49
4.9V
4NB
UM1431S-50
5.0V
4NC
UM1431S-51
5.1V
4ND
UM1431S-52
5.2V
4N2
UM1431S-53
5.3V
4N3
UM1431S-54
5.4V
4N4
UM1431S-55
5.5V
4N5
UM1431S-56
5.6V
4N6
UM1431S-57
5.7V
4N7
UM1431S-58
5.8V
4N8
UM1431S-59
5.9V
4N9
UM1431S-60
6.0V
4NE
 
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