DC/DC电源芯片

wangde550 · 发表于 2016-7-7 08:39:19

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4.75V to 20V Input, 2A Synchronous Step-Down
Converter with Fast Transient Response

1. Introduction
The FD1482 is a current mode synchronous buck converter, and has a proprietary
W-mode™® Gm curvature circuit that enables fast transient response, enables the device to
adopt to both low ESR output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR
ceramic capacitors.
2. Features.
 W-mode™® Gm CurvatureEnables Fast Transient Response
 2AOutput Current
 High Efficient Integrated FETs Optimized for portable application:
 95mΩ (High side) and 90mΩ (Low side)
 High Efficiency
 Up to 95% Efficiency @ 5V Input, 3.3V Output Up to 93% efficiency @ 12V Input, 3.3V
Output
 Wide Input Voltage Range: 4.75V to 20V @ 2A loading
 Wide Output Voltage Range: 0.918V to 14V @ 2Aloading ( 32Watt output @max)
 Low Output Ripple andAllows Ceramic Output Capacitor
 Thermal Shutdown Protection
 340-KHz Switching Frequency(fsw)
 Cycle By Cycle Over Current Limit
 +/-1.5% High Accuracy Feedback Voltage
3. Applications
WideRange ofApplications for Low Voltage System
Digital TV Power Supply
High Definition Blu-ray Disc Players
Networking Home Terminal
Digital STB
Ideal for Portable Applications QQ截图20160707083808.png