General Description

The MIC2605/6 is a 1.2MHz/2MHz, PWM DC/DC boost switching regulator available in a 2mm x 2mm MLF® package. High power density is achieved with the MIC2605/6’s internal 40V/0.5A switch and schottky diode, allowing it to power large loads in a tiny footprint.

The MIC2605/6 implements constant frequency 1.2MHz/2MHz PWM current mode control. The MIC2605/6 offers internal compensation that offers excellent transient response and output regulation performance. The high frequency operation saves board space by allowing small, low-profile external components. The fixed frequency PWM scheme also reduces spurious switching noise and ripple to the input power source.

Features

• Wide input voltage range: 4.5V to 20V

• Output voltage adjustable to 40V

• 0.5A switch current and schottky diode

• MIC2605 operates at 1.2MHz

• MIC2606 operates at 2MHz

• Programmable soft start

• Stable with small size ceramic capacitors

• High efficiency

• Low input and output ripple

• <10µA shutdown current

• UVLO

• Output over-voltage and over-temperature protection

• 8-pin 2mm x 2mm MLF® package

• –40°C to +125°C junction temperature range

Applications

• TV-tuners

• Broadband communications

• TFT-LCD bias supplies

• Bias supply

• Positive output regulators

• SEPIC converters

• DSL applications

• Local boost regulators