Description
The ACE73205F is a switch-mode PWM step-down DC-DC controller using few external components.
It achieves 5A continuous output current over a wide input supply range with excellent load and line
regulation. The output voltage is internally set at 5V.
The high switching frequency of 550KHz allows tiny external components to be usable. The ACE73205F
is designed to be stable with ceramic output capacitor. Pulse skipping mode is adopted under light load
for high efficiency. Furthermore, the low operating current and low dropout operation make the
ACE73205F is suitable for battery powered systems.
Fault protection includes cycle-by-cycle current limit, short output protection and output overvoltage
protection. In shutdown mode, the ACE73205F draws only 7.5μA(VCC=15V) of supply current. On-chip
soft-start minimizes the inrush supply current and the output overshoot at initial startup.
The ACE73205F is available in a space-saving 8-pin SOP package.

Features
⚫ Wide Input Voltage: 4.8V to 32V
⚫ Operating with an External P-Channel MOSFET
⚫ Output Current Up to 5A
⚫ Fixed Switching Frequency: 550KHz
⚫ Fixed Output Voltage with 1% Accuracy
⚫ Efficiency up to 95%
⚫ Low Drop-Out Mode
⚫ Stable with Low-ESR Output Ceramic Capacitor
⚫ On-Chip Power-On Delay to Debounce Input Supply
⚫ Cycle-by-Cycle Current Limit
⚫ Overvoltage protection
⚫ Frequency Foldback for Output Short Circuit Protection
⚫ Built-in Soft Start
⚫ High Efficiency at Light Load with Pulse Skipping Mode
⚫ Shutdown Current: 7.5uA typical at 15V
⚫ Operating Ambient Temperature -40℃ to 85℃

Application
⚫ Car Charger
⚫ Set-Top Box, Modems
⚫ Pre-regulator
⚫ Distributed Power Systems
⚫ Battery Chargers