1 Features
• AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to +125°C, TA
• Available in fixed and adjustable options
• High PSRR: 43dB at 100kHz (legacy chip)
• High PSRR: 39dB at 100kHz (new chip)
• Fast start-up time: 50μs (legacy chip)
• Internal 500μs soft-start time to reduce inrush
current (new chip)
• Stable with a 2.2μF ceramic capacitor
• Very low dropout 112mV (typ) at full load
• Packages:
– 6-pin SOT-23
– 5-pin SOT-23

2 Applications
• Automotive head units
• Hybrid instrument clusters
• Telematics control units
• DC/DC converters

3 Description
The TPS793-Q1 is a low-dropout (LDO), low-power,
linear voltage regulator. This device features high
power-supply rejection ratio (PSRR), ultra-low noise,
fast start-up, and excellent line and load transient
response. The TPS793-Q1 is available in smalloutline
SOT-23 packages that sources 200mA.
The TPS793-Q1 is designed for post-regulation
applications, offering fixed and adjustable options
supporting common voltage rails like 3.3V. The low
noise and PSRR performance makes the device
designed for power-sensitive analog loads.
The TPS793-Q1 offers foldback current limit to reduce
power dissipation during overcurrent condition. The
EN input helps with power-sequencing requirements
of the system. The internal soft-start provides a
controlled start-up, reducing inrush current and
allowing lower input capacitance to be used.