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FAN5235 - System Electronics Regulator

General Description

The FAN5235 is a high efficiency and high precision DC/DC controller for notebook converters.

Utilization of both input and output voltage feedback in a current-mode control allows for fast and stable loop response over a wide range of input and output voltage variations.

Key Features

  • Synchronous rectification ±1% precision internal reference >90% efficiency Input and output voltage feedback 5.4V to 24V input voltage range Internally set 300kHz ±15% oscillator 5V and 3.3V Main outputs switch out of phase 5V-ALWAYS and 3.3V-ALWAYS outputs Adjustable boost converter for 12V Boost converter slaved to 5V Main Input UVLO Outputs OVP of Buck Conv.

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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 FAN5235 System Electronics Regulator for Mobile PCs Features • • • • • • • • • • • • • • Synchronous rectification ±1% precision internal reference >90% efficiency Input and output voltage feedback 5.4V to 24V input voltage range Internally set 300kHz ±15% oscillator 5V and 3.3V Main outputs switch out of phase 5V-ALWAYS and 3.3V-ALWAYS outputs Adjustable boost converter for 12V Boost converter slaved to 5V Main Input UVLO Outputs OVP of Buck Converters Precision current limit option for 5V, 3.3V Main Power Good Voltage Monitor Description The FAN5235 is a high efficiency and high precision DC/DC controller for notebook converters.