1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

– Junction temperature: –40°C to +150°C, TJ

• Input voltage range: 3 V to 40 V (42 V max)

• Output voltage range: 3.3 V and 5 V (fixed)

• Output current: up to 150 mA

• Output voltage accuracy: ±1 (max)

• Low dropout voltage:

– 230 mV (max) at 150 mA (VOUT ≥ 3.3 V)

• Low quiescent current:

– 18 μA (typ)

• Excellent line transient response:

– ±2 VOUT deviation during cold-crank

– ±2 VOUT deviation (1-V/μs VIN slew rate)

• Stable with a 2.2-μF or larger capacitor

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Package: 3-pin SOT-223

2 Applications

• Reconfigurable instrument clusters

• Body control modules (BCM)

• Always-on battery-connected applications:

– Automotive gateways

– Remote keyless entries (RKE)

3 Description

The TPS7B83-Q1 is a low-dropout linear regulator

designed to connect to the battery in automotive

applications. The device has an input voltage range

extending to 40 V, which allows the device to

withstand transients (such as load dump) that are

anticipated in automotive systems. With only an

18-μA quiescent current, the device is an optimal

solution for powering always-on components such as

microcontrollers (MCUs) and controller area network

(CAN) transceivers in standby systems.

The device has state-of-the-art transient response

that allows the output to quickly react to changes

in load or line (for example, during cold-crank

conditions). Additionally, the device has a novel

architecture that minimizes output overshoot when

recovering from dropout. During normal operation, the

device has a tight DC accuracy of ±1 over line, load,

and temperature.