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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?
UM1440S-xx 18V Input, 100mA Current Limited, Micropower Linear Regulator ACTIVE High Input Voltage LDO 1 Fixed Output 100 3.6 18 2 6 Yes No 5/SOT23 Y
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Product Description
 
The UM1430/1440 series are high input voltage low quiescent current regulators implemented in CMOS technology. It can accept input voltage as high as 18V with 100mA output current limit. The output voltages are selectable in 100mV step 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 UM1440 can turn off the output and greatly reduce the power consumption by setting the enable pin low.
The UM1430 is available in SOT23-3, SOT23-5 and SOT89-3 packages. The UM1440 is available in SOT23-5 and SOT89-5 packages.
 
Features
 
- Input Voltage Range: 3.6V to 18V
- 30mA Guaranteed Output Current
- ±3% Voltage Accuracy at 30mA
- Low Dropout Voltage:
  250mV (Typical) at 30mA
- Low Quiescent Current:
  4.8μA@VIN=18V (Typical)
- Available Fixed Output Voltage from 2.0V to 6.0V with 0.1V Step
- With Enable Control (UM1440S-xx, UM1440Y-xx)
- Output Current Limit
- UM1430: Low Profile SOT23-3, SOT23-5 and SOT89-3 Packages
  UM1440: Low Profile SOT23-5 and SOT89-5 Packages 
 
Typical Application Circuit

 
 
Applications
 
- Communication Equipment
- Audio/Video Equipment 

Pin Configurations  
             

                 UM1440S-xx
 
Naming Information
 

 
Ordering Information
 
Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1440S-20
2.0V
SOT23-5
5SA
3000pcs/7Inch
Tape & Reel
UM1440S-21
2.1V
5SB
UM1440S-22
2.2V
5S2
UM1440S-23
2.3V
5S3
UM1440S-24
2.4V
5S4
UM1440S-25
2.5V
5S5
UM1440S-26
2.6V
5S6
UM1440S-27
2.7V
5S7
UM1440S-28
2.8V
5S8
UM1440S-29
2.9V
5S9
UM1440S-30
3.0V
5SC
UM1440S-31
3.1V
5SD
UM1440S-32
3.2V
5SE
UM1440S-33
3.3V
5SF
UM1440S-34
3.4V
5SH
UM1440S-35
3.5V
5SL
UM1440S-36
3.6V
5SM
UM1440S-37
3.7V
5SJ
UM1440S-38
3.8V
5SK
UM1440S-39
3.9V
5SN
UM1440S-40
4.0V
5SP
UM1440S-41
4.1V
5SQ
UM1440S-42
4.2V
5SR
UM1440S-43
4.3V
5SS
UM1440S-44
4.4V
5ST
UM1440S-45
4.5V
5SY
UM1440S-46
4.6V
5SU
UM1440S-47
4.7V
5SZ
UM1440S-48
4.8V
5TA
UM1440S-49
4.9V
5TB
UM1440S-50
5.0V
5TC
UM1440S-51
5.1V
5TD
UM1440S-52
5.2V
5T2
UM1440S-53
5.3V
5T3
UM1440S-54
5.4V
5T4
UM1440S-55
5.5V
5T5
UM1440S-56
5.6V
5T6
UM1440S-57
5.7V
5T7
UM1440S-58
5.8V
5T8
UM1440S-59
5.9V
5T9
UM1440S-60
6.0V
5TE
 
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