BL1117 Bipolar LDO Linear Regulator, Low Dropout Voltage, 1.2–12V Output, 1A, SOT223 / TO252 Package

The BL1117 is a bipolar low-dropout (LDO) linear regulator designed to provide stable output voltages from 1.2V to 12V with up to 1A output current. With excellent line/load regulation and low dropout voltage, it is suitable for PC motherboards, monitors, TVs, and set-top boxes (STB). Available in SOT223 and TO252 packages, it supports both compact and standard PCB layouts.

Key Specifications

• Input Voltage (VIN): Max. 18V

• Output Voltage (VOUT): 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V, 12V, ADJ (1.25–12V)

• Output Current (IOUT): 1A

• Output Accuracy: ±2% / ±1%

• Quiescent Current (IQ): 2mA

• Regulator Type: Bipolar LDO Linear Regulator

• Package: SOT223, TO252

Applications

• PC motherboards

• Monitors and TVs

• Set-top boxes (STB)

Features

• Low dropout voltage for efficient regulation

• High accuracy output

• Compact packages for flexible PCB design

• Bipolar technology ensures fast transient response