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MAX8797 Dataheets PDF



Part Number MAX8797
Manufacturers Maxim
Logo Maxim
Description 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller
Datasheet MAX8797 DatasheetMAX8797 Datasheet (PDF)

CONFIDENTIAL INFORMATION—RESTRICTED TO INTEL® IMVP-6 LICENSEES 19-2452; Rev 1; 8/08 KIT ATION EVALU E L B A IL AVA 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller General Description Features o 1-Phase Quick-PWM Controller o ±0.5% VOUT Accuracy Over Line, Load, and Temperature o 7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only) o 5-Bit GMCH DAC o Active Voltage Positioning with Adjustable Gain o Accurate Droop and Current Limit o Remote Output and Ground Sense o Adjustable Output-Voltage Slew Rate o Pow.

  MAX8797   MAX8797



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CONFIDENTIAL INFORMATION—RESTRICTED TO INTEL® IMVP-6 LICENSEES 19-2452; Rev 1; 8/08 KIT ATION EVALU E L B A IL AVA 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller General Description Features o 1-Phase Quick-PWM Controller o ±0.5% VOUT Accuracy Over Line, Load, and Temperature o 7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only) o 5-Bit GMCH DAC o Active Voltage Positioning with Adjustable Gain o Accurate Droop and Current Limit o Remote Output and Ground Sense o Adjustable Output-Voltage Slew Rate o Power-Good Window Comparator o Power Monitor o Temperature Comparator o Drives Large Synchronous Rectifier FETs o 2V to 26V Power Input Range o Adjustable Switching Frequency (600kHz max) o Output Overvoltage Protection (MAX8796/ MAX8797 Only) o Undervoltage and Thermal-Fault Protection o Soft-Startup and Soft-Shutdown o Internal Boost Diodes MAX8796/MAX8797/MAX17401 The MAX8796/MAX8797/MAX17401 are 1-phase QuickPWM™ step-down VID power-supply controllers for Intel notebook CPUs and graphics. 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 MAX8796/MAX8797/MAX17401 are intended for two different notebook CPU/GPU core applications: either bucking down the battery directly to create the core voltage, or else bucking down the +5V system supply. The single-stage 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. A thermistor-based temperature sensor provides programmable thermal protection. A power monitor provides an analog voltage output proportional to the power consumed by the CPU/GPU. The MAX8796/MAX17401 implement both the Intel IMVP-6 CPU core specifications, as well as the Intel GMCH graphics core specifications. The MAX8797 implements the Intel GMCH graphics core specifications. The MAX8796/MAX17401 are available in a 32pin TQFN package. The MAX8797 is available in a 28-pin TQFN package. Pin Configurations BST VDD TOP VIEW D5 (STDBY) PGND D6 DL D4 18 24 LX 25 DH 26 PGDIN 27 VRHOT 28 TIME 29 ILIM 30 VCC 31 CCV 32 12 PWR 23 22 21 20 19 17 16 15 14 D2 D1 D0 V3P3 (GMCH) CLKEN SHDN PWRGD TON Applications IMVP-6/IMVP-6+ Core Power Supply Intel GMCH Crestline/Cantiga Graphics Core Power Supply Voltage-Positioned Step-Down Converters 2 to 4 Lithium-Ion (Li+) Cell Battery-to-CPU Core Supply Converters Notebooks/Desktops/Servers Quick-PWM is a trademark of Maxim Integrated Products, Inc. MAX8796 MAX17401 PAD GND D3 13 12 11 10 9 8 THRM 3 FB GNDS 4 CSN 5 CSP 6 DPRSTP 7 DPRSLPVR THIN QFN 5mm x 5mm Pin Configur.


MAX8796 MAX8797 MAX17401


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