特性 Features

? Input Voltage Range: 2.4 V to 5.5 V

? Output Voltage Options:

– Fixed Voltage: 1.2 V, 1.8 V, 2.5 V, 2.8 V, 3 V, 3.3 V

– Adjustable Voltage: 0.8 V to 5 V

? High Output Accuracy:

– ±1% Typical Under Room Temperature

– ±2% Through Operating Conditions

? Maximum Output Current: 500 mA

? Low Dropout Voltage: 400 mV at 500 mA

? Low Quiescent Current and Shutdown Current

? Foldback Current Limit and Thermal Protection

? Stable with 2.2-μF Ceramic Capacitor

? Inrush Input Current Limitation During Start-up

? Thermal Shutdown Protection

? Junction Temperature Range: ?40°C to +125°C

? Package Options: SOT23-5, SOT89-3, DFN1×1-4

Applications

? Handheld Devices with Battery Power Supply

? POS

? Video Surveillance

? Wireless and IoT modules

描述 Description

The TPL740 is a series of high-performance and lowdropout linear regulators. The TPL740 series supports

a maximum 500-mA output current with low-quiescent

current and high PSRR. The TPL740 series is stable with

ceramic output capacitors from 2.2 μF to 10 μF.

The TPL740 series has a high PSRR with 60 dB at 1

kHz. This feature makes the TPL740 series very suitable

for power-sensitive applications with high noise from the

previous stage power supply. A quiescent current of as

low as 49 μA and only 20-nA shutdown current make

the TPL740 series ideal for portable devices with battery

power supplies. The current limit foldback and thermal

overload protection circuits improves the reliability under

heavy load conditions.

The TPL740 series provides several output voltage options

including the fixed and adjustable versions with ±2%

output voltage accuracy over operating conditions. The

TPL740 series is guaranteed over the junction temperature

range from ?40°C to +125°C.