ZCC7008B-23V 8A同步降压 替代RT6258B

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ZCC7008B-23V 8A同步降压 替代RT6258B [复制链接]

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