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IC / 8796G / MAX8796GTJ / QFN-32

تولید کننده: MAXIM
مدل کالا: MAX8796GTJ
موجودی:
تماس 8893- 6186
قیمت: 0تومان

8796G - MAX8796GTJ - MAXIM - TQFN-32

Phase Quick-PWM Intel IMVP-6/GMCH Controller

PWM کنترل گر سریع فاز

General Description

the MAX8796/MAX8797/MAX17401 are 1-phase Quick- PWM™ step-down VID power-supply controllers forIntel notebook CPUs and graphics. The Quick-PWM control provides instantaneous response to fast loadcurrent steps. Active voltage positioning reduces powerdissipation and bulk output capacitance requirementsand allows ideal positioning compensation for tantalum,polymer, or ceramic bulk output capacitors.
The MAX8796/MAX8797/MAX17401 are intended fortwo 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 forthe highest possible efficiency. Alternatively, 2-stage conversion (stepping down the +5V system supplyinstead of the battery) at higher switching frequencyprovides the minimum possible physical size.
A slew-rate controller allows controlled transitionsbetween VID codes. A thermistor-based temperature sensor provides programmable thermal protection. Apower monitor provides an analog voltage output pro-portional to the power consumed by the CPU/GPU.
The MAX8796/MAX17401 implement both the Intel IMVP-6 CPU core specifications, as well as the IntelGMCH graphics core specifications. The MAX8797implements the Intel GMCH graphics core specifica- tions. The MAX8796/MAX17401 are available in a 32- pin TQFN package. The MAX8797 is available in a28-pin TQFN package.

Features

1-Phase Quick-PWM Controller
±0.5% VOUTAccuracy Over Line, Load, andTemperature
7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only)
5-Bit GMCH DAC
Active Voltage Positioning with Adjustable GainAccurate Droop and Current Limit
Remote Output and Ground Sense
Adjustable Output-Voltage Slew RatePower-Good Window Comparator
Power Monitor
Temperature Comparator
Drives Large Synchronous Rectifier FETs2V to 26V Power Input Range
Adjustable Switching Frequency (600kHz max)Output Overvoltage Protection (MAX8796/
MAX8797 Only)
Undervoltage and Thermal-Fault ProtectionSoft-Startup and Soft-Shutdown
Internal Boost Diodes

Applications

IMVP-6/IMVP-6+ Core Power Supply
Intel GMCH Crestline/CantigaGraphics Core Power SupplyVoltage-Positioned Step-Down Converters
2 to 4 Lithium-Ion (Li+) Cell Battery-to-CPU CoreSupply Converters
Notebooks/Desktops/Servers

 

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