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BL8521 - 3A Synchronous Buck Converter

General Description

The BL8521 is a synchronous, 1.4MHz, fix frequency PWM Buck converter.

It is ideal for powering portable equipment that powered by a single cell Lithium-ion batter, or USB port.

The BL8521 can provide up to 3A of load current with output voltage as low as 0.8V.

Key Features

  • Adjustable Output Voltage, 0.8 - Vin.
  • High efficiency, up to 96%.
  • Output voltage accuracy 2%.
  • 0.1ohm Rdson of internal MOSFET.
  • 3A maximum output current.
  • Up to 1.5MHz fix switching frequency.
  • 5.5V maximum operation voltage.
  • Short circuit protection.
  • Thermal shutdown protection.
  • 10mV Load regulation at 3A load.
  • Compatible with ceramic output capacitor.
  • Excellent load transient performance.
  • In-rush current suppression.
  • Reverse.

📥 Download Datasheet

Datasheet Details

Part number BL8521
Manufacturer SHANGHAI BELLING
File Size 601.77 KB
Description 3A Synchronous Buck Converter
Datasheet download datasheet BL8521 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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BL8521 5.5V, 1.4MHz, 3A Synchronous Buck Converter DESCRIPTION The BL8521 is a synchronous, 1.4MHz, fix frequency PWM Buck converter. It is ideal for powering portable equipment that powered by a single cell Lithium-ion batter, or USB port. The BL8521 can provide up to 3A of load current with output voltage as low as 0.8V. It can operate at 100% duty cycle for low dropout application. With its peak current mode control and outside compensation, the BL8521 is stable with ceramic capacitors and small inductors. BL8521 comprises a cycle-by-cycle current limit and thermal shutdown to protect itself from fault application. BL8521 is available in DFN 3x3 -10 package. FEATURES  Adjustable Output Voltage, 0.8 - Vin  High efficiency, up to 96%  Output voltage accuracy 2%  0.