AIC3414的特性及應用

1.2MHz, Synchronous Step-Up Converter in SOT23-6

FEATURES
Output Voltage Range: 2.5V to 4.0V
Synchronous 92% Efficient Boost Converter
1.2 MHz Fixed Switching Frequency
Built-in current mode compensation
Built-in Protection: Over Current Protection and Over Temperature Protection.
Quiescent Current:300?A at VIN=1.1V, VOUT=3.3V, IOUT=0A
<1?A Shutdown Standby Current
EMI Reduction Anti-Ringing Control Circuitry
Thin SOT23-6 package

APPLICATIONS
Single / Dual Cells Ni-Cd / Ni-Mh Type Battery Operated Products
Internet Audio Player
Wireless and DSL Modems
Digital Still Cameras
Portable Equipment

DESCRIPTION
The AIC3414 step-up converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using an internal synchronous rectifier to obtain maximum efficiency. It stays in operation with supply voltages down to 0.5V. The AIC3414 provides a complete power supply solution for products powered by either one or two Alkaline, Ni-Cd, or Ni-MH battery cells. The AIC3414 output voltage can be adjustable up to 4.0V. At light load condition, the AIC3414 can work at PSM mode to improve efficiency and reduce quiescent current.

The AIC3414 includes the anti-ringing circuitry. The anti-ringing circuitry is implemented to reduce ringing and in effect lower radiated electromagnetic energy when the converter enters the discontinuous con-duction mode.

TYPICAL APPLICATION