TPS7E67-Q1 LDO Linear Voltage Regulators

Introduction

Texas Instruments’ TPS7E67-Q1 series is a family of automotive low-dropout (LDO) linear regulators intended for direct connection to a vehicle battery supply. The technically notable feature is its combination of a wide 3 V to 40 V input range with 2.8 µA no-load quiescent current, targeting power rails that must remain active while the rest of a system is in standby.

The family supports up to 300 mA load current and is available in both adjustable-output and fixed-output configurations, allowing a single regulator series to address several low-power automotive supply requirements.

What it does

TPS7E67-Q1 devices regulate a battery-connected input voltage to a lower, controlled output voltage for electronic loads. Their 3 V to 40 V input-voltage range accommodates automotive battery-connected supply rails.

Adjustable-output versions support output voltages from 1.2 V to 38 V. Fixed-output versions are available across a 1.8 V to 12 V output range. Each device can supply up to 300 mA of load current.

A no-load quiescent current of 2.8 µA makes the series suited to circuits where standby power consumption is an important consideration. Texas Instruments identifies always-on loads, including microcontrollers and CAN transceivers used in standby systems, as intended uses.

Applications

• Always-on automotive microcontroller supply rails
• Standby power supplies for CAN transceivers
• Battery-connected low-power electronic modules
• Low-current regulated rails requiring fixed or adjustable output voltage
• Automotive standby subsystems with input voltages within the 3 V to 40 V range

Design considerations

Designers can select between adjustable and fixed-output variants according to the required rail voltage. The adjustable range extends from 1.2 V to 38 V, while fixed-output options cover 1.8 V to 12 V.

The regulator’s input range should be matched to the expected battery-connected supply conditions, and the load requirement should remain within the specified 300 mA maximum. For always-on circuitry, the 2.8 µA no-load quiescent-current figure is particularly relevant when assessing standby current budgets.

Availability and further information

The source/distributor and datasheet links on this page provide further information on the TPS7E67-Q1 LDO linear regulator family, including variant selection and supporting technical documentation.