BL8503 Power Management IC – 250mA Low-Power CMOS LDO Linear Regulator | SOT23-3, SOT89-3, TO92 Description

The BL8503 is a low-power CMOS LDO linear regulator designed for battery-powered applications that require extremely low standby current and stable voltage regulation.
It supports a maximum input voltage of 8.0V and offers adjustable output voltages from 1.2V to 6.0V in fine 0.1V steps.

With a quiescent current of only 3µA, the BL8503 is well-suited for always-on circuits, reference voltage rails, and low-power consumer devices.
It can deliver up to 250mA output current, balancing low power consumption with reliable load capability.

Key Specifications

• Input Voltage (VIN): Up to 8.0V

• Output Voltage (VOUT): Adjustable 1.2V – 6.0V (0.1V step)

• Output Current (IOUT): Up to 250mA

• Quiescent Current (IQ): 3µA (typ.)

• Output Accuracy: ±2% / ±1%

• Regulator Type: CMOS LDO Linear Regulator

• Packages: SOT23-3, SOT89-3, TO92

Applications

• Battery-powered equipment

• Wireless mouse and peripherals

• Reference voltage sources

• Portable consumer electronics

Features

• Ultra-low quiescent current

• Wide adjustable output voltage range

• Stable and accurate output regulation

• Multiple package options for flexible design

• Ideal for low-power and standby-critical systems