HT82P604B

Preliminary Features · · · · · HT82P604B DC-DC Converter · Operating voltage: 5V~12V Drives two N-Channel MOSFETs Simple single-loop control design - Voltage-mode PWM control Fast transient response - High-bandwidth error amplifier - Full 0% to 100% duty ratio Excellent output voltage regulation - ±1% over line voltage and temperature · · · 5 bit digital-to-analog output voltage selection - Wide range -1.3V to 3.5V - 0.1V binary steps from 2.1V to 3.5V - 0.05V binary steps from 1.3V to 2.05V Power-good output voltage monitor Over-voltage and over-current sensing element, uses MOSFET¢s rDS (ON) Small converter size - Constant frequency operation - 200kHz free-running oscillator programmable from 50kHz to over 1MHz Applications · Power supply for PentiumTM, PentiumTM Pro, PowerPCTM and AlphaTM Microprocessors · · High-power5Vto3.xVDC-DCregulators Low-voltage distributed power supplies General Description The HT82P604B provides complete control and protection for a DC-DC converter optimized for high performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck topology. The HT82P604B integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter is easily adjusted and precisely regulated. The HT82P604B includes a 5-input digital-to-analog converter (DAC) that adjusts the output voltage from 2.1V to 3.5V in 0.1V increments and from 1....