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UM5483SB
2.5A，18V，同步降压型整流转换器
Datasheet Reliability Report Package Information Order Sample  
Key Specifications
Part Number Description Status SubFamily Regulated Outputs(.) Vin(Min)(V) Vin(Max)(V) Vout(Min)(V) Vout(Max)(V) Iout(Max)(A) Topology Special Features Frequency(kHz) Operating Temperature Range (°C) Pin/Package EV Kit Available?
UM5483SB 2.5A，18V，同步降压型整流转换器 PRELIMINARY Step-Down (Buck) Converter 1 4.75 18 0.8 15 2.5 Synchronous Buck Enable,Internal Soft-Start,Under Voltage Lockout 340 -40 to 85 6/SOT23
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Product Description
 
The UM5483SB is a monolithic synchronous buck regulator. The device integrates two 100mΩ MOSFETs, and provides 2.5A of continuous load current over a wide input voltage of 4.75V to 18V. Current mode control provides fast transient response and cycle-by-cycle current limit.
The device, available in SOT23-6 package, provides a very compact solution with minimal external components.
 
Features
 
- 1% Feedback Voltage Accuracy
- Fast Soft-Start
- Wide 4.75V to 18V Operating Input Range
- Integrated 100mΩ Power MOSFET Switches
- Output Adjustable from 0.8V to 15V
- Up to 92.5% Efficiency
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 340kHz Frequency
- Cycle-by-Cycle Over Current Protection
- Input Under Voltage Lockout
- SOT23-6 package
 
Applications
 
- Distributed Power Systems
- Networking Systems
- FPGA, DSP, ASIC Power Supplies
- Green Electronics/Appliances
- Notebook Computers
 
Pin Configurations  

 
Typical Application Circuit

 
Ordering Information

Part Number
Packaging Type
Marking Code
Shipping Qty
UM5483SB
SOT23-6
UCL
3000pcs/7Inch
Tape & Reel
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