MAX8771 – (MAX8770 – MAX8772) PWM Controller

MAX8771 Datasheet PDF learn more.

Part number : MAX8771

Functions : This is a kind of semiconductor, (MAX8770 – MAX8772) PWM Controller.

Pin arrangement :

Package information :

Manufacturer : Maxim Integrated Products

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MAX8771 Datasheet PDF

The texts in the PDF file :

CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL® IMVP-6 LICENSEES 19-3913; Rev 0; 10/05 MAX8770/MAX8771/MAX8772 Dual-Phase, QuickPWM Controller for IMVP-6+ CPU Core Power Supplies General

Description

The MAX8770/MAX8771/MAX8772 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. The MAX8770/MAX8771/MAX8772 are intended for two different notebook CPU core applications: either bucking down the battery directly to create the core voltage, or else bucking down the +5V system supply. The singlestage conversion method allows this device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, 2-stage conversion (stepping down the +5V system supply instead of the battery) at higher switching frequency provides the minimum possible physical size. A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and shutdown, and controlled exit from suspend. A thermistor-based temperature sensor provides a programmable thermalfault output (VRHOT). A power-monitor output (POUT) provides an analog voltage output proportional to the power consumed by the CPU. The MAX8770/MAX8771/ MAX8772 include output undervoltage protection (UVP) and thermal protection, and the MAX8770/MAX8771 also include overvoltage protection (OVP). When any of these protection features detect a fault, the controller shuts down. A voltage-regulator power-OK (PWRGD) output indicates the output is in regulation. A clock enable (CLKEN) output provides p [ … ]

MAX8771 PDF File



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