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FAN5231 - Precision Dual PWM Controller And Linear Regulator

General Description

The FAN5231 is a highly integrated power controller, which provides a complete power management solution for mobile CPUs.

The IC integrates two PWM controllers and a linear regulator as well as monitoring and protection circuitry into a single 28-lead plastic SSOP package.

Key Features

  • Provides 3 Regulated Voltages.
  • Microprocessor core (SpeedStep™-enabled).
  • Microprocessor I/O.
  • Microprocessor Clock Generator.
  • High Efficiency Over Wide Load Range.
  • Not Dissipative Current-Sense Scheme.
  • Uses MOSFET’s R DS(ON).
  • Optional Current-Sense Resistor for Precision Overcurrent.
  • Adaptive Dead Time Drivers for N-Channel MOSFETs.
  • Operates from +5V, +3.3V and Battery (5.6-24V) Inputs.
  • Precision Co.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.fairchildsemi.com FAN5231 Precision Dual PWM Controller And Linear Regulator for Notebook CPUs Features • Provides 3 Regulated Voltages – Microprocessor core (SpeedStep™-enabled) – Microprocessor I/O – Microprocessor Clock Generator • High Efficiency Over Wide Load Range • Not Dissipative Current-Sense Scheme – Uses MOSFET’s R DS(ON) – Optional Current-Sense Resistor for Precision Overcurrent • Adaptive Dead Time Drivers for N-Channel MOSFETs • Operates from +5V, +3.3V and Battery (5.6-24V) Inputs • Precision Core Voltage Control: – Remote “Kelvin” Sensing – Summing Current-Mode Control – On-Chip Mode-Compensated “Droop” for Optimum Transient Response and Lower Processor Power Dissipation • TTL-Compatible 5-Bit Digital Output Voltage Selection – Wide Range - 0.925VDC to 1.