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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?
UM1450B-xx 250mA, Low Consumption, Wide Input Voltage Linear Regulator ACTIVE High Input Voltage LDO 1 Fixed Output 250 0 16 2.5 5 No No 3/SOT89 Y
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Product Description
 
The UM1450 series are a group of positive voltage output, high precise and low power consumption voltage regulators. The maximum input voltage is 16V. The output voltages are selectable in 100mV steps within a range of 2.5V to 5V. It can also be customized on command.
The UM1450 series have very low power consumption (IQ=2μA) which can greatly improve natural life of batteries.
The UM1450 series are available in a low profile SOT23-3 & SOT89-3 packages, which are lead (Pb)-free.
 
Features
 
- Maximum Input Voltage: 16V
- Low Quiescent Current: 2μA (Typ.)
- Maximum Output Current: 250mA
- Low Dropout:
  210mV@100mA (VOUT=3.3V)
  420mV@200mA (VOUT=3.3V)
- Low Temperature Coefficient: ±150ppm/°C
- Output Current Limit:
  330mA@ VOUT=3.3V
 
Typical Application Circuit

 
Note 1: Input Capacitor (CIN=1μF) is recommended in all applications.
Note 2: Output Capacitor (COUT=1μF/6.8μF) is recommended in all applications to assure the stability of circuit. 1μF Tantalum capacitor or 6.8μF ceramic capacitor is recommended.
 
Applications
 
- Battery-Powered Equipment
- Power Management of MP3, PDA, DSC, Mouse, PS2 Games
- Reference Voltage Source
- Hand-Hold Equipment 

Pin Configurations  

                
                 TAB Connected to Pin 2
                             UM1450B-xx
 
Ordering Information

 
 
Marking Information

Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1450B-25
2.5V
SOT89-3
(Tab connected to GND)
1450B25
1000pcs/7Inch
Tape & Reel
UM1450B-26
2.6V
1450B26
UM1450B-27
2.7V
1450B27
UM1450B-28
2.8V
1450B28
UM1450B-29
2.9V
1450B29
UM1450B-30
3.0V
1450B30
UM1450B-31
3.1V
1450B31
UM1450B-32
3.2V
1450B32
UM1450B-33
3.3V
1450B33
UM1450B-34
3.4V
1450B34
UM1450B-35
3.5V
1450B35
UM1450B-36
3.6V
1450B36
UM1450B-37
3.7V
1450B37
UM1450B-38
3.8V
1450B38
UM1450B-39
3.9V
1450B39
UM1450B-40
4.0V
1450B40
UM1450B-41
4.1V
1450B41
UM1450B-42
4.2V
1450B42
UM1450B-43
4.3V
1450B43
UM1450B-44
4.4V
1450B44
UM1450B-45
4.5V
1450B45
UM1450B-46
4.6V
1450B46
UM1450B-47
4.7V
1450B47
UM1450B-48
4.8V
1450B48
UM1450B-49
4.9V
1450B49
UM1450B-50
5.0V
1450B50
 
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