5A, 500KHz Synchronous Boost Converter with Output Disconnect LESHAN RADIO COMPANY, LTD.
LR8421 Series „ INTRODUCTION: The LR8421 devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery.
The converter generates a stable output voltage that is adjusted by an external resistor divider.
It provides high efficient power conversion and is capable of delivering output currents up to 2.
1A at 5V at a supply voltage down to 3V.
The implemented boost converter is based on a fixed switching frequency (500kHz typical), current-mode controller using a synchronous rectifier to obtain maximum efficiency.
...

Since 2006. D4U Semicon,
Electronic Components Datasheet Search Site. (Privacy Policy & Contact)