BL8552 Power Management IC – 300mA Low-Noise Low-Power CMOS LDO | SOT23, SOT23-5, SOT89-3

The BL8552 is a low-power, low-noise CMOS LDO linear regulator optimized for battery-operated and noise-sensitive applications.
It supports an input voltage up to 8.0V and provides adjustable output voltages from 1.2V to 3.6V with fine 0.1V steps.

Featuring an ultra-low quiescent current of only 2µA and high PSRR of 60dB @ 100Hz, the BL8552 is ideal for analog, RF, and reference voltage rails where both power efficiency and noise performance are critical.
It delivers up to 300mA output current while maintaining stable regulation.

Key Specifications

• Input Voltage (VIN): Up to 8.0V

• Output Voltage (VOUT): Adjustable 1.2V – 3.6V (0.1V step)

• Output Current (IOUT): Up to 300mA

• Quiescent Current (IQ): 2µA (typ.)

• PSRR: 60dB @ 100Hz

• Output Accuracy: ±2%

• Regulator Type: Low-noise CMOS LDO

• Packages: SOT23, SOT23-5, SOT89-3

Applications

• Battery-powered equipment

• Wireless and portable devices

• Reference voltage sources

• Noise-sensitive analog circuits

Features

• Ultra-low standby current

• Low-noise output performance

• High PSRR for clean power rails

• Fine output voltage resolution

• Multiple compact package option