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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?
UM1550B Ultra Low Quiescent Current Linear Regulator ACTIVE Ultra Low Quiescent Current LDO 1 Fixed Output 300 1.8 8 1.2 5 No No 3/SOT89 Y
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Product Description
 
The UM1550/1560 series is a set of high input voltage low quiescent current regulator implemented in CMOS technology. They can deliver 300mA output current and allow an input voltage as high as 8V. They are available with several fixed output voltages ranging from 1.2V to 5.0V. CMOS technology ensures low voltage drop and low quiescent current.
The UM1550 is available in SOT23-3, SOT89-3, DFN6 2.0×2.0 and DFN4 1.0×1.0 packages. The UM1560 is available in SOT23-5, SOT343, DFN6 2.0×2.0 and DFN4 1.0×1.0 packages.
 
Features
 
- Input Voltage Range: 1.8V to 8V
- 300mA Guaranteed Output Current
- Low Dropout Voltage:
  250mV (Typical) at 200mA
- Low Quiescent Current:
  2.5µA@VIN=8V (Typical)
- Low Noise: 115µVRMS (10Hz to 100kHz)
- Available Fixed Output Voltage from 1.2V to 5.0V with 0.1V Step
- With Shutdown Control (UM1560)
- Output Current Limit
- Low Profile SOT23-3, SOT23-5, SOT89-3, SOT343, DFN6 2.0×2.0 and DFN4 1.0×1.0 Packages
 
Typical Application Circuit

 
 
Applications
 
- Communication Equipments
- Audio/Video Equipments
- Portable Games
- Portable AV Equipments
- Battery-Powered Equipments
 
Pin Configurations  
 
               
                  UM1550B

Naming Information
 


Ordering Information

Part Number
Output Voltage
Packaging Type
Marking Code
Shipping Qty
UM1550B-12
1.2V
SOT89-3
CAC
1000pcs/7Inch
Tape & Reel
UM1550B-13
1.3V
CAD
UM1550B-14
1.4V
CAE
UM1550B-15
1.5V
CAF
UM1550B-16
1.6V
CAH
UM1550B-17
1.7V
CAL
UM1550B-18
1.8V
CAM
UM1550B-19
1.9V
CAJ
UM1550B-20
2.0V
CAK
UM1550B-21
2.1V
CAN
UM1550B-22
2.2V
CAP
UM1550B-23
2.3V
CAQ
UM1550B-24
2.4V
CAR
UM1550B-25
2.5V
CAS
UM1550B-26
2.6V
CAT
UM1550B-27
2.7V
CAY
UM1550B-28
2.8V
CAU
UM1550B-29
2.9V
CAZ
UM1550B-30
3.0V
CBC
UM1550B-31
3.1V
CBD
UM1550B-32
3.2V
CBE
UM1550B-33
3.3V
CBF
UM1550B-34
3.4V
CBH
UM1550B-35
3.5V
CBL
UM1550B-36
3.6V
CBM
UM1550B-37
3.7V
CBJ
UM1550B-38
3.8V
CBK
UM1550B-39
3.9V
CBN
UM1550B-40
4.0V
CBP
UM1550B-41
4.1V
CBQ
UM1550B-42
4.2V
CBR
UM1550B-43
4.3V
CBS
UM1550B-44
4.4V
CBT
UM1550B-45
4.5V
CBY
UM1550B-46
4.6V
CBU
UM1550B-47
4.7V
CBZ
UM1550B-48
4.8V
CCC
UM1550B-49
4.9V
CCD
UM1550B-50
5.0V
CCE
 
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