General Description
The MAX17021/MAX17082/MAX17482 are 2/1-phase interleaved Quick-PWM™ step-down VID power-supply controllers for notebook CPUs. True out-of-phase operation reduces input ripple current requirements and output- voltage ripple, while easing component selection and layout difficulties. The Quick-PWM control provides instantaneous response to fast load-current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors.

Features
♦ Single-/Dual-Phase, Quick-PWM Controllers
♦ MAX17021 IMVP-6+ (Montevina)
♦ MAX17082/MAX17482 IMVP-6.5 (Calpella)
♦ ±0.5% VOUT Accuracy Over Line, Load, and Temperature
♦ 7-Bit 0 to 1.50V VID Control
♦ Dynamic Phase Selection Optimizes Active/Sleep Efficiency
♦ Transient Phase Overlap Reduces Output Capacitance
♦ Integrated Boost Switches
♦ Active Voltage Positioning with Adjustable Gain
♦ Programmable 200kHz to 800kHz Switching Frequency
♦ Accurate Current Balance and Current Limit
♦ Adjustable Slew-Rate Control
♦ Power-Good, Clock Enable, and Thermal-Fault Outputs
♦ Phase Current Imbalance Fault Output
♦ Drives Large Synchronous Rectifier MOSFETs
♦ 4V to 26V Battery Input-Voltage Range
♦ Undervoltage and Thermal-Fault Protection
♦ Overvoltage Protection (MAX17021/MAX17082)
♦ Soft-Startup and Soft-Shutdown