Analog:AIC1880 - Low Noise, Step-Up PWM DC/DC Converter

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Analog:AIC1880 - Low Noise, Step-Up PWM DC/DC Converter

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FEATURES

90% High Efficiency
1.6A, 0.3Ohm, 12V Internal Power MOSFET
640kHz/1.2MHz Pin-Selectable Operation Frequency
2.6V to 5.5V Input Range
Low Shutdown Current: 0.1mA
Programmable Soft-Start
External Compensation Network
Adjustable Output from VIN to 11V
Thin 8-Pin MSOP Package

APPLICATIONS

TFT Bias Supplies
Handheld Devices
PCMCIA Cards
Portable Equipment

The AIC1880 is a step-up DC/DC converter with a 1.6A, 0.3Ohm internal power switch. A soft-start pro-grammed with an external capacitor sets the input current ramp rate. Pin-selectable high switching frequency (640kHz or 1.2MHz) allows easy filter-ing and low noises. An external compensation pin gives users flexibility in setting frequency com-pensation, which makes it feasible to use the small, low ESR ceramic output capacitors. The AIC1880 converts input ranging 2.6V to 5.5V into output voltage up to 11V. The device is available in a low profile 8-lead MSOP package.