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CE8421

Chipower
Part Number CE8421
Manufacturer Chipower
Description 500KHz Synchronous Boost Converter
Published Sep 11, 2018
Detailed Description 5A, 500KHz Synchronous Boost Converter with Output Disconnect CE8421 Series  INTRODUCTION: The CE8421 devices provide...
Datasheet PDF File CE8421 PDF File

CE8421
CE8421

Overview
5A, 500KHz Synchronous Boost Converter with Output Disconnect CE8421 Series  INTRODUCTION: The CE8421 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.
Boost switch and rectifier switch are connected internally to provide the lowest leakage inductance and best EMI behavior possible.
The current-mode control scheme provides fast transient response and good output voltage accuracy.
At light load, the converter will automatically enter into Pulse Frequency Modulation (PFM) o...


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