MAX8796/MAX8797/MAX17401 CONFIDENTIAL INFORMATIONRESTRICTED TO INTEL IMVP-6 LICENSEES 19-2452 Rev 1 8/08 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller General Description Features 1-Phase Quick-PWM Controller The MAX8796/MAX8797/MAX17401 are 1-phase Quick- 0.5% V Accuracy Over Line, Load, and PWM step-down VID power-supply controllers for OUT Temperature Intel notebook CPUs and graphics. The Quick-PWM 7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only) control provides instantaneous response to fast load current steps. Active voltage positioning reduces power 5-Bit GMCH DAC dissipation and bulk output capacitance requirements Active Voltage Positioning with Adjustable Gain and allows ideal positioning compensation for tantalum, Accurate Droop and Current Limit polymer, or ceramic bulk output capacitors. Remote Output and Ground Sense The MAX8796/MAX8797/MAX17401 are intended for Adjustable Output-Voltage Slew Rate two different notebook CPU/GPU core applications: Power-Good Window Comparator either bucking down the battery directly to create the Power Monitor core voltage, or else bucking down the +5V system Temperature Comparator supply. The single-stage conversion method allows this Drives Large Synchronous Rectifier FETs device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, 2-stage 2V to 26V Power Input Range conversion (stepping down the +5V system supply Adjustable Switching Frequency (600kHz max) instead of the battery) at higher switching frequency Output Overvoltage Protection (MAX8796/ provides the minimum possible physical size. MAX8797 Only) A slew-rate controller allows controlled transitions Undervoltage and Thermal-Fault Protection between VID codes. A thermistor-based temperature Soft-Startup and Soft-Shutdown sensor provides programmable thermal protection. A Internal Boost Diodes power monitor provides an analog voltage output pro- Pin Configurations portional to the power consumed by the CPU/GPU. The MAX8796/MAX17401 implement both the Intel TOP VIEW IMVP-6 CPU core specifications, as well as the Intel GMCH graphics core specifications. The MAX8797 24 23 22 21 20 19 18 17 implements the Intel GMCH graphics core specifica- tions. The MAX8796/MAX17401 are available in a 32- LX 25 16 D2 pin TQFN package. The MAX8797 is available in a D1 DH 26 15 28-pin TQFN package. 27 14 D0 PGDIN MAX8796 V3P3 (GMCH) VRHOT 28 13 Applications MAX17401 TIME 29 12 CLKEN IMVP-6/IMVP-6+ Core Power Supply PAD SHDN ILIM 30 11 GND Intel GMCH Crestline/Cantiga 31 10 PWRGD V CC Graphics Core Power Supply CCV 32 9 TON Voltage-Positioned Step-Down Converters 12 3 45 6 7 8 2 to 4 Lithium-Ion (Li+) Cell Battery-to-CPU Core Supply Converters THIN QFN Notebooks/Desktops/Servers 5mm x 5mm Quick-PWM is a trademark of Maxim Integrated Products, Inc. Pin Configurations continued at end of data sheet. Ordering Information PART TEMP RANGE PIN-PACKAGE FEATURE o o MAX8796GTJ+ -40 C to +105 C 32 TQFN IMVP-6/GMCH o o MAX8797GTI+ -40 C to +105 C 28 TQFN GMCH only o o MAX17401GTJ+ -40 C to +105 C 32 TQFN IMVP-6/GMCH +Denotes a lead-free/RoHS-compliant package. Maxim Integrated Products 1 For information on other Maxim products, visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE PWR BST GNDS V DD FB DL CSN PGND CSP D6 DPRSTP D5 (STDBY) D4 DPRSLPVR D3 THRM CONFIDENTIAL INFORMATIONRESTRICTED TO INTEL IMVP-6 LICENSEES 1-Phase Quick-PWM Intel IMVP-6/GMCH Controller ABSOLUTE MAXIMUM RATINGS V , V to GND .....................................................-0.3V to +6V CLKEN to GND ....................................-0.3V to (V3P3 + 0.3V) CC DD CSP, CSN to GND ....................................................-0.3V to +6V D0D6 to GND.....................................................-0.3V to +6V ILIM, THRM, DPRSLPVR, VRHOT, PGDIN, DPRSTP to GND .....................................-0.3V to +6V PWRGD to GND...................................................-0.3V to +6V MAX8797 Only: CCV, FB, PWR, TIME to GND.....................-0.3V to (V + 0.3V) CC D0D4, STDBY to GND........................................-0.3V to +6V SHDN to GND (Note 1)...........................................-0.3V to +30V MAX8796/MAX17401 32-Pin, 5mm x 5mm TON to GND ...........................................................-0.3V to +30V TQFN Continuous Power Dissipation GNDS, PGND to GND ...........................................-0.3V to +0.3V (up to +70C) (derate above +70C/21.3mW/C) .....1702mW DL to PGND................................................-0.3V to (V + 0.3V) MAX8797 28-Pin, 4mm x 4mm DD BST to GND............................................................-0.3V to +36V TQFN Continuous Power Dissipation LX to BST..................................................................-6V to +0.3V (up to +70C) (derate above +70C/20.8mW/C) .....1667mW BST to V .............................................................-0.3V to +30V DD Operating Temperature Range .........................-40C to +105C DH to LX ....................................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C BST MAX8796/MAX17401 Only: Storage Temperature Range .............................-65C to +165C V3P3 to GND........................................................-0.3V to +6V Lead Temperature (soldering, 10s) .................................+300C Note 1: SHDN can be forced to 12V for the purpose of debugging prototype breadboards using the no-fault test mode, which dis- ables fault protection. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Circuit of Figure 1 (MAX8796/MAX17401), Circuit of Figure 2 (MAX8797), V = 12V, V = V = 5V, V3P3 = 3.3V, SHDN = STDBY IN DD CC = DPRSTP = ILIM = PGDIN = V , DPRSLPVR = GNDS = PGND = GND, R = 4.25k, V = V = V = 1.200V, CC FB CC SENSE CSP CSN D0D6 set for 1.20V (D0D6 = 0001100 for IMVP-6, D0D4 = 01000 for GMCH). T = 0C to +85C, unless otherwise specified. A Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS PWM CONTROLLER V , V 4.5 5.5 CC DD Input Voltage Range V V3P3 (MAX8796/MAX17401 only) 3.0 3.6 DAC codes from -0.5 +0.5 % Measured at FB 0.8125V to 1.5000V with respect to DAC codes from DC Output-Voltage Accuracy GNDS includes -7 +7 0.3750V to 0.8000V load-regulation error mV DAC codes from 0 to (Note 3) -20 +20 0.3625V IMVP-6 Boot Voltage V IMVP-6 (MAX8796/MAX17401 only) 1.194 1.200 1.206 V BOOT Line Regulation Error V = 4.5V to 5.5V, V = 4.5V to 26V 0.1 % CC IN GNDS Input Range -200 +200 mV GNDS Gain A V / V , -20 0m V V + 200m V 0.97 1.00 1.03 V/V GNDS OUT GND S GND S GNDS Input Bias Current I -15 -10 +2 A GNDS V = 4.5V to 5.5V, CC TIME Voltage V 1.985 2.000 2.015 V TIME I = 28A (R = 71.5k) TIME TIME 2 MAX8796/MAX8797/MAX17401