General Description

The MAX8760 is a dual-phase, Quick-PWM™, stepdown controller for 6-bit VID AMD Mobile Turion™ 64 CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The Quick-PWM control scheme provides instantaneous response to fast-load current steps. The MAX8760 includes active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output capacitance requirements.

Features

♦ Dual-Phase, Quick-PWM Controller

♦ ±0.75 VOUT Accuracy Over Line, Load, and Temperature (1.3V)

♦ Active Voltage Positioning with Adjustable Gain and Offset

♦ 6-Bit On-Board DAC: 0.375V to 1.55V Output Adjust Range

♦ Selectable 100kHz/200kHz/300kHz/550kHz Switching Frequency

♦ 4V to 28V Battery Input Voltage Range

♦ Adjustable Slew-Rate Control

♦ Drives Large Synchronous Rectifier MOSFETs

♦ Undervoltage and Thermal-Fault Protection

♦ Power Sequencing and Timing

♦ Selectable Suspend Voltage

♦ Soft-Start and Soft-Shutdown

♦ Selectable Single- or Dual-Phase Pulse Skipping

Applications

6-Bit VID AMD Mobile Turion 64 CPU

Multiphase CPU Core Supply

Voltage-Positioned Step-Down Converters

Servers/Desktop Computers