General Description

The MAX8707 is a multiphase (3-/4-phase), interleaved, fixed-frequency, step-down controller for AMD Hammer CPU core supplies. Interleaved multiphase operation reduces the input ripple current and output voltage ripple while easing component selection and layout placement. The MAX8707 includes active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output-capacitance requirements.

Features

♦ 3-/4-Phase Interleaved Fixed-Frequency Controller

♦ ±0.75 VOUT Accuracy Over Line, Load, and Temperature

♦ 5-Bit On-Board Digital-to-Analog Converter (DAC)—0.80V to 1.55V

♦ Adjustable Suspend Voltage Input

♦ Active Voltage Positioning with Adjustable Gain and Offset

♦ Accurate Lossless Current Balance

♦ Accurate Droop and Current Limit

♦ Remote Output and Ground Sense

♦ Output Slew-Rate Control

♦ Power-Good Window Comparator

♦ Selectable 200kHz/300kHz/600kHz Switching Frequency

♦ Output Overvoltage and Undervoltage Protection

♦ Thermal Fault Protection

♦ 2V ±0.7 Reference Output

♦ Soft-Startup and Shutdown