BL8531C Power Management IC – 500mA Asynchronous DC/DC Step-Up Converter | 0.8–12V, External MOSFET | SOT23-3 SOT23-5 SOT89-3

The BL8531C is an enhanced Power Management IC implementing an asynchronous DC/DC boost converter with external MOSFET support, enabling higher output current capability.
It supports a 0.8V to 12V input voltage range and offers fixed output voltages from 2.5V to 6.0V selectable in 0.1V increments.

With PFM operation, the BL8531C delivers up to 500mA output current, improved efficiency up to 90%, and maintains low standby power consumption with 20µA quiescent current.

Key Specifications

• Input Voltage (VIN): 0.8V – 12V

• Output Voltage (VOUT): 2.5V – 6.0V (0.1V step)

• Output Current (IOUT): Up to 500mA

• Quiescent Current (IQ): 20µA

• Switching Frequency (FOSC): 350kHz

• Operating Mode: Asynchronous PFM

• Efficiency: Up to 90%

• Output Accuracy: ±2%

• Package: SOT23-3, SOT23-5, SOT89-3

Applications

• Wireless mouse

• Toys

• Battery-powered peripherals

• Boost power rails

Features

• External MOSFET for higher current

• Wide input voltage range

• Low quiescent current

• Adjustable fixed output selection

• Compact SMD packages