描述 Description

This device is designed to have a fast transient response and be stable with 10 μF capacitors. This combination provides high performance at a reasonable cost.Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 230?mV at an output current of 1?A for the TPS76850-Q1) and is directly proportional to the output current. Additionally, because the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85?μA over the full range of output current, 0?mA to 1?A). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a shutdown mode; applying a TTL high signal to the enable (EN) input shuts down the regulator, reducing the quiescent current to less than 1?μA at TJ = 25°C.Power good (PG) is an active-high output, which can be used to implement a power-on reset or a low-battery indicator.The TPS768xx-Q1 is offered in 1.8-V, 2.5-V, 3.3-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 5.5 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS768xx-Q1 family is available in a 20-pin PWP package.

特性 Features

? Qualified for Automotive Applications
? AEC-Q100 Qualified With the Following Results:
? Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
? Device HBM ESD Classification Level H2
? Device CDM ESD Classification Level C4B

? 1-A Low-Dropout (LDO) Voltage Regulator
? Available in 1.8-V, 2.5-V, 3.3-V, and 5-V Fixed-Output and an Adjustable Version
? Dropout Voltage Down to 230 mV at 1 A (TPS76850-Q1)
? Ultralow 85-μA Typical Quiescent Current
? Fast Transient Response
? 2% Tolerance Over Specified Conditions for Fixed-Output Versions
? Open-Drain Power Good (See TPS767xx-Q1 for Power-On Reset With 200-ms Delay Option)
? 20-Pin TSSOP (PWP) Package
? Thermal Shutdown Protection