CE8421 Description
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.
CE8421 Key Features
- Up to 90% Efficiency at IOUT=2A VOU T=5V from 3.3V Input
- Low Device Quiescent Current: 70μA (Max)
- Guaranteed 2.5A Output Current at VOUT=5V
- 500kHz PWM Switching Frequency
- Synchronous and Embedded Power
- Low RDS(ON) (main switch/synchronous switch)
- Input Voltage Range: 1.8V to 5.25V
- Adjustable Output Voltage Range
- Current Mode Operation with Internal
- Logic Controlled Shutdown(<1μA)