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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?
UM1431B-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/SOT89 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  

                
               UM1431B-xx
 
Naming Information

 
 
Ordering Information

Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1431B-20
2.0V
SOT89-3
(Tab connected to GND)
4SA
1000pcs/7Inch
Tape & Reel
UM1431B-21
2.1V
4SB
UM1431B-22
2.2V
4S2
UM1431B-23
2.3V
4S3
UM1431B-24
2.4V
4S4
UM1431B-25
2.5V
4S5
UM1431B-26
2.6V
4S6
UM1431B-27
2.7V
4S7
UM1431B-28
2.8V
4S8
UM1431B-29
2.9V
4S9
UM1431B-30
3.0V
4SC
UM1431B-31
3.1V
4SD
UM1431B-32
3.2V
4SE
UM1431B-33
3.3V
4SF
UM1431B-34
3.4V
4SH
UM1431B-35
3.5V
4SL
UM1431B-36
3.6V
4SM
UM1431B-37
3.7V
4SJ
UM1431B-38
3.8V
4SK
UM1431B-39
3.9V
4SN
UM1431B-40
4.0V
4SP
UM1431B-41
4.1V
4SQ
UM1431B-42
4.2V
4SR
UM1431B-43
4.3V
4SS
UM1431B-44
4.4V
4ST
UM1431B-45
4.5V
4SY
UM1431B-46
4.6V
4SU
UM1431B-47
4.7V
4SZ
UM1431B-48
4.8V
4JF
UM1431B-49
4.9V
4JH
UM1431B-50
5.0V
4JL
UM1431B-51
5.1V
4JM
UM1431B-52
5.2V
4JJ
UM1431B-53
5.3V
4JK
UM1431B-54
5.4V
4JN
UM1431B-55
5.5V
4JP
UM1431B-56
5.6V
4JQ
UM1431B-57
5.7V
4JR
UM1431B-58
5.8V
4JS
UM1431B-59
5.9V
4JT
UM1431B-60
6.0V
4JY
 
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