BL8531 Power Management IC – 200mA Asynchronous DC/DC Step-Up Converter | 0.8–7V, 350kHz|SOT23-3 SOT23 SOT23-5 SOT89-3 TO92

The BL8531 is a low-power Power Management IC featuring an asynchronous DC/DC step-up (boost) converter with an internal MOSFET, designed for ultra-low-voltage battery applications.
It supports a 0.8V to 7.0V input voltage range and provides a fixed output voltage from 2.5V to 6.0V, selectable in 0.1V steps.

Operating in PFM mode, the BL8531 delivers up to 200mA output current with a very low quiescent current of 12µA and up to 85% efficiency, making it ideal for small battery-powered consumer products.

Key Specifications

• Input Voltage (VIN): 0.8V – 7.0V

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

• Output Current (IOUT): Up to 200mA

• Quiescent Current (IQ): 12µA

• Switching Frequency (FOSC): 350kHz

• Operating Mode: Asynchronous PFM

• Efficiency: Up to 85%

• Output Accuracy: ±2%

• Package: SOT23-3, SOT23-5, SOT89-3, TO-92

Applications

• Toys

• Wireless mouse

• Low-power consumer electronics

• Battery boost conversion

Features

• Ultra-low startup voltage

• Extremely low quiescent current

• Internal MOSFET integration

• Compact and flexible package options

• Stable boost regulation