TPS71550-Q1中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

1? Qualified for Automotive Applications

– Automotive Grade 1 (Q-temperature Range)

– Device HBM ESD Classification Level H2

– Device CDM ESD Classification Level C4B

? 24-V Maximum Input Voltage

? Low 3.2-μA Quiescent Current at 50 mA

? Stable With Any Capacitor (> 0.47 μF)

? 50-mA Low-Dropout Regulator

? Available in 2.5 V, 3 V, 3.3 V, 5 V, and Adjustable

(1.2 V to 15 V)

? Minimum and Maximum Specified Current Limit

? 5-Pin SC70 and SOT (DCK) Package

? –40°C to 125°C Specified Junction Temperature

Range

2 Applications

? Ultra-Low-Power Microcontrollers

? Cellular and Cordless Handsets

? Portable- and Battery-Powered Equipment

3 Description

The TPS715xx-Q1 low-dropout (LDO) voltage

regulators offer the benefits of high input voltage,

LDO voltage, low-power operation, and miniaturized

packaging. The devices, which operate over an input

range of 2.5 V to 24 V, are stable with any capacitor

(>0.47 μF). The LDO voltage and low quiescent

current allow operations at extremely low power

levels. Therefore, the devices are ideal for powering

battery-management ICs. Specifically, since the

devices are enabled as soon as the applied voltage

reaches the minimum input voltage, the output is

quickly available to power continuously operating

battery-charging ICs.

The usual PNP pass transistor has been replaced by

a PMOS pass element. Because the PMOS pass

element behaves as a low-value resistor, the LDO

voltage, typically 415 mV at 50 mA of load current, is

directly proportional to the load current. The low

quiescent current (3.2 μA typical) is stable over the

entire range of output load current (0 mA to 50 mA).