Applications

• Chargers for cell/cordless phones, PDAs, MP3/portable audio

devices, adapters, networking, etc.

Description

The LinkSwitchTM-4 family of ICs dramatically simplifies low power CV/CC

charger design by eliminating an optocoupler and secondary control

circuitry. The LinkSwitch-4 family adaptive BJT drive technology uses

combined base and emitter switching to boost switching performance

and deliver higher efficiency, wider Reverse Bias Safe Operating Area

(RBSOA) margin and the flexibility to accommodate a wide range of low

cost BJT. The device incorporates a multimode PWM/PFM controller

with quasi resonant switch to maximize the efficiency, meets low

no-load power and at same time maintain fast transient response

greater than 4.3 V with a load change from 0% to 100%.