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FAN5234 - Dual Mobile-Friendly PWM/PFM Controller

General Description

The FAN5234 PWM controller provides high efficiency and regulation with an adjustable output from 0.9 V to 5.5 V required to power I/O, chip sets, memory banks, or peripherals in high

performance notebook computers, PDAs, and Internet appliances.

Key Features

  • Wide Input Voltage Range for Mobile Systems: 2 V to 24 V.
  • Excellent Dynamic Response with Voltage Feed.
  • Forward and Average.
  • Current.
  • Mode Control.
  • Lossless Current Sensing on Low.
  • Side MOSFET or Precision Over.
  • Current via Sense Resistor.
  • VCC Under.
  • Voltage Lockout.
  • Power.
  • Good Signal.
  • Light.
  • Load Hysteretic Mode Maximizes Efficiency.
  • 300 kHz or 600 kHz Operation.
  • Ope.

📥 Download Datasheet

Datasheet Details

Part number FAN5234
Manufacturer onsemi
File Size 361.09 KB
Description Dual Mobile-Friendly PWM/PFM Controller
Datasheet download datasheet FAN5234 Datasheet

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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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Dual Mobile-Friendly PWM/PFM Controller FAN5234 Description The FAN5234 PWM controller provides high efficiency and regulation with an adjustable output from 0.9 V to 5.5 V required to power I/O, chip−sets, memory banks, or peripherals in high−performance notebook computers, PDAs, and Internet appliances. Synchronous rectification and hysteretic operation at light loads contribute to a high efficiency over a wide range of loads. The Hysteretic Mode of operation can be disabled if PWM Mode is desired for all load levels. Efficiency is further enhanced by using the MOSFET’s RDS(ON) as a current−sense component. Feed−forward ramp modulation, average current mode control, and internal feedback compensation provide fast response to load transients.