1 Features

? AEC-Q100 qualified for automotive applications:

– Temperature grade 0: –40°C to 150°C, TA

– Device HBM classification level 2

– Device CDM classification level C4B

– Device MM classification level M2

? Stable with no output capacitor or any value or

type of capacitor

? Input voltage range: 1.7V to 5.5V

? Ultra-low dropout voltage: 40mV typical at 250mA

? Excellent load transient response—with or without

optional output capacitor

? NMOS topology provides low reverse leakage

current

? Low noise: 30μVRMS typical (10kHz to 100kHz)

? Initial accuracy: 0.5%

? 1% overall accuracy (line, load, and temperature)

? Less than 1μA maximum IQ in shutdown mode

? Thermal shutdown and specified minimum and

maximum current limit protection

? Available in multiple output voltage versions:

– Fixed outputs of 1.2V, 1.5V, 1.6V, 1.8V, 2.5V,

3V, 3.3V, and 5V

– Adjustable outputs from 1.2V to 5.5V

– Custom outputs available

2 Applications

? Portable and battery-powered equipment

? Post-regulation for switching supplies

? Noise-sensitive circuitry such as VCOs

? Point of load regulation for DSPs, FPGAs, ASICs,

and microprocessors

3 Description

The TPS732-Q1 low-dropout (LDO) voltage regulator

uses san NMOS topology consisting of an NMOS

pass transient in a voltage-follower configuration. This

topology is stable using output capacitors with low

ESR, and even allows operation without a capacitor.

The topology also provides high reverse blockage

(low reverse current) and ground pin current that is

nearly constant over all values of output current.

The TPS732-Q1 uses an advanced BiCMOS process

to yield high precision while delivering low dropout

voltages and low ground pin current. Current

consumption, when not enabled, is under 1μA and

designed for portable applications. The extremely low

output noise (30μVRMS with 0.1μF CNR) is designed

for powering VCOs. This device is protected by

thermal shutdown and foldback current limit.