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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?
UM1440Y-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/SOT89 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  
                

                  UM1440Y-xx
 
Naming Information
 

 
Ordering Information
 
Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1440Y-20
2.0V
SOT89-5
1440-20
1000pcs/7Inch
Tape & Reel
UM1440Y-21
2.1V
1440-21
UM1440Y-22
2.2V
1440-22
UM1440Y-23
2.3V
1440-23
UM1440Y-24
2.4V
1440-24
UM1440Y-25
2.5V
1440-25
UM1440Y-26
2.6V
1440-26
UM1440Y-27
2.7V
1440-27
UM1440Y-28
2.8V
1440-28
UM1440Y-29
2.9V
1440-29
UM1440Y-30
3.0V
1440-30
UM1440Y-31
3.1V
1440-31
UM1440Y-32
3.2V
1440-32
UM1440Y-33
3.3V
1440-33
UM1440Y-34
3.4V
1440-34
UM1440Y-35
3.5V
1440-35
UM1440Y-36
3.6V
1440-36
UM1440Y-37
3.7V
1440-37
UM1440Y-38
3.8V
1440-38
UM1440Y-39
3.9V
1440-39
UM1440Y-40
4.0V
1440-40
UM1440Y-41
4.1V
1440-41
UM1440Y-42
4.2V
1440-42
UM1440Y-43
4.3V
1440-43
UM1440Y-44
4.4V
1440-44
UM1440Y-45
4.5V
1440-45
UM1440Y-46
4.6V
1440-46
UM1440Y-47
4.7V
1440-47
UM1440Y-48
4.8V
1440-48
UM1440Y-49
4.9V
1440-49
UM1440Y-50
5.0V
1440-50
UM1440Y-51
5.1V
1440-51
UM1440Y-52
5.2V
1440-52
UM1440Y-53
5.3V
1440-53
UM1440Y-54
5.4V
1440-54
UM1440Y-55
5.5V
1440-55
UM1440Y-56
5.6V
1440-56
UM1440Y-57
5.7V
1440-57
UM1440Y-58
5.8V
1440-58
UM1440Y-59
5.9V
1440-59
UM1440Y-60
6.0V
1440-60
  
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