Chipower CE8421
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.| Part No. | CE8421 |
|---|---|
| Datasheet | CE8421 Download |
| Manufacturer | Chipower |
| Description | 500KHz Synchronous Boost Converter |
| Buy | Stock & Price |
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 from 3.3V Input
● 500kHz PWM Switching Frequency
● Synchronous and Embedded Power MOSFETs; No Schottky Diode Required
● Low RDS(ON) (main switch/synchronous switch) at 5.0V output: 35/42mohm
● Input Voltage Range: 1.8V to 5.25V
● Adjustable Output Voltage Range: from 2.5V to 5.5V
● Pulse Frequency Modulation Operation for Improved Efficiency at Low Output Power
● Current Mode Operation with Internal Compensation for Excellent Line and Load Transient Response
● Logic Controlled Shutdown(<1μA)
● Load Disconnect During Shutdown
● Automatic output discharge at shutdown: No output discharge function
● Internal Soft-Start to Limit Inrush Current
● Over Current Protection
● Input Under Voltage Lockout
● Output Over Voltage Protection
● Over-Temperature Protection
● Available in thermally enhanced 8-pin SOP Package
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APPLICATIONS
：● All Sin...
