Step-Down Converter
AIC3413
400mA, 1.2MHz Synchronous Step-Up Converter
FEATURES
DESCRIPTION
VIN Start Up Voltage: 0.9V Output V...
Description
AIC3413
400mA, 1.2MHz Synchronous Step-Up Converter
FEATURES
DESCRIPTION
VIN Start Up Voltage: 0.9V Output Voltage Range: from 2.7V to 5.25V. Up to 94% Efficiency 1.2MHz Fixed Frequency Switching Built-in current mode compensation Built-in Protection: Over Current, Over Voltage,
Over Temperature Optional Automatic PWM/PSM Version (AIC3413)
and Forced PWM Version (AIC3413A). Logic Controlled Shutdown: < 1μA Output Disconnect by Shutdown Function Built-in Soft Start Active Anti-ringing Control Small SOT-23-6 Package
APPLICATIONS
Single/Dual Cells Ni-Cd/Ni-Mh/Li-Lon Type Battery Operated Products
Wireless Mice PDA Digital Still Cameras Portable Equipment
The AIC3413 is a synchronous step-up DC/DC converter. There are two options for AIC3413: automatic PWM/PSM version (AIC3413), and forced PWM version (AIC3413A). The automatic PWM/PSM version enters PSM from PWM automatically when load decreases. The goal is to improve efficiency and reduce quiescent current; the forced PWM version keeps the same operating frequency even when it operates in light load. This guarantees low output ripple and noise. The AIC3413 provides a complete power supply solution for products powered by one or two Alkaline, Ni-Cd, Ni-MH or Li-Lon battery cells. It stays in operation with supply voltages down to 0.5V. The implemented boost converter uses an internal synchronous rectifier to obtain maximum efficiency. A low-EMI mode is implemented to reduce ringing an...
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