LR8425 Datasheet (LRC) - 500KHz Synchronous Boost Converter

LR8425, 500KHz Synchronous Boost Converter

Chip Enable Input.

Internal integrated with 1Mohm pull down resistor.

CE=High: Normal free running operation.

CE=Low: Shutdown; quiescent current <1μA.

Output capacitor can be completely discharged through the load or feedback resistors.

If CE is undefined, pin SW may ring.

Low Battery Comparator In

5A, 500KHz Synchronous Boost Converter with Output Disconnect LESHAN RADIO COMPANY, LTD.

LR8425 Series INTRODUCTION: The /58425 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 1.5A at

LR8425 Features

* z 97% Efficiency at VOUT=5V from 3.3V Input z Device Quiescent Current: 37μA (Typ) z Guaranteed 2.5A Output Current at VOUT=5V from 3.3V Input z 500kHz PWM Switching Frequency z Synchronous and Embedded Power MOSFETs, No Schottky Diode Required z Low RDS(ON) (main switch/synchronous switch) at 5.0V