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3.3V/8A Synchronous Step-down Converter The ZCC7008B operates at high efficiency over a wideoutput current load range with fixed 3.3V output voltageand capable of delivering 8A load current. lt supports awide range input voltage from 4.5V to 23V.AdaptiveConstant-On-Time (COT) control mode provides fasttransient response, eases loop stabilization, andoperates with a low-cost electrolytic capacitorZCC7008B also integrate a 100mA LDO and bypassswitch for efficiency improving.ZCC7008B provides complete enable control, under/overvoltage protect, short circuit protect, valley current limit,thermal shutdown function features.ZCC7008B provides compact solution for TCON powersystem. Features 4.5V ~ 23V Input Voltage Range Fixed 3.3V output voltage Supports 8-A continuous output current Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA Internal +1% reference voltage at 25°C Integrated bypass switch, typical Ron is 1.50 Internal 0.6ms soft-start Max switching frequency up to 500kHz fast transient response with COT control mode Power good indicator Ultrasonic Mode Integrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature AQFN3X3-12 FC Package Applications Notebook Computers Notebook, Tablet Computers General power supply for 3.3V output |
