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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