Key parameters
- Function
- Boost; boost/buck
- Inputvoltage range
- 5V~40V
- Output Voltage
- ADJ
- Internal benchmark
- 1.250V
- Output Voltage Accuracy
- ±3%
- Output current<g id="1">(A)</g>
- 5
- Switching frequency (kHz)
- 180
- Operating temperature range
- -40℃~125℃
- Package
- TO263-5L
Overview
SD5209 is a monolithic integrated circuit designed for boost and buck-boost conversion. It operates from a DC5V to 40V input range with low ripple and an integrated power MOS. The fixed-frequency oscillator and frequency-compensation circuit simplify design. The PWM loop linearly adjusts duty cycle from 0~90%. It includes overcurrent protection and EN-pin logic-level shutdown. Available in a TO263-5 package.
Applications
- EPC/notebook vehicle adapter
- Boost and buck-boost conversion
- Power supply for handheld devices
TECHNICAL DOCUMENTS
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