BL9165 Power Management IC – 500mA CMOS LDO Linear Regulator | SOT23-5 / SC70-5 / DFN1x1-4L

The BL9165 is a low-dropout (LDO) CMOS linear regulator designed for low noise, high PSRR, and fast transient response.
It supports an input voltage range of 1.8V to 5.5V and provides an output voltage of 1.0V to 4.0V, making it ideal for battery-powered and portable information devices.

It delivers up to 500mA output current with low quiescent current of 45µA, ensuring energy efficiency and stable voltage regulation. Available in SOT23-5, SC70-5, and DFN1x1-4L packages.

Key Specifications

• Input Voltage (VIN): 1.8V – 5.5V

• Output Voltage (VOUT): 1.0V – 4.0V

• Output Current (IOUT): Up to 500mA

• Output Accuracy: ±2%

• PSRR: 83dB @1kHz

• Quiescent Current (IQ): 45µA

• Package: SOT23-5, SC70-5, DFN1x1-4L

Applications

• Battery-powered devices

• Portable information appliances

Features

• Low noise, high PSRR for sensitive electronics

• Fast response to dynamic loads

• Compact package options for flexible PCB layout