TPS746-Q1
SBVS358B – JUNE 2018 – REVISED JTAPNUSA7R4Y62-Q0211
SBVS358B – JUNE 2018 – REVISED JANUARY 2021
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TPS746-Q1 1-A LDO With Power-Good in Small Wettable Flank WSON Packages
1 Features
3 Description
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AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to +125°C, TA
Device operating junction temperature range:
– –40°C to +150°C
The TPS746-Q1 is a 1-A, ultra-low-dropout regulator
(LDO) with power-good functionality. This device is
available in a small 6-pin, 2-mm × 2-mm and a small
8-pin, 3-mm × 3-mm WSON package with wettable
flanks to facilitate optical inspection. The TPS746-Q1
consumes low quiescent current and provides fast line
and load transient performance.
Package:
– 2-mm × 2-mm wettable flank WSON
– 3-mm × 3-mm wettable flank WSON
Input voltage range: 1.5 V to 6.0 V
Output voltage range:
– Fixed option: 0.65 V to 5.0 V
– Adjustable option: 0.55 V to 5.5 V
High PSRR: 38 dB at 100 kHz
Output accuracy: ±0.85% typical, ±1.5% maximum
Power-good output options:
The TPS746-Q1 is a flexible device for post-regulation
by supporting an input voltage range from 1.5 V to
6.0 V and an externally adjustable output range of
0.55 V to 5.5 V. The device also features fixed output
voltages for powering common voltage rails.
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The TPS746-Q1 has a power-good (PG) output that
monitors the voltage at the feedback pin to indicate
the status of the output voltage. The EN input and PG
output can be used for sequencing multiple power
supplies in the system.
– Open-drain or push-pull
Ultra-low dropout:
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– 265 mV (max) at 1 A (3.3 VOUT
Stable with a 1-µF or larger capacitor
Low IQ: 25 µA (typical)
Active output discharge
Low thermal resistance:
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The TPS746-Q1 is stable with small ceramic output
capacitors, allowing for a small overall solution size. A
precision band-gap and error amplifier provides high
accuracy of ±0.85% (max) at 25°C and ±1.5% (max)
over temperature. This device includes integrated
thermal shutdown, current limit, and undervoltage
lockout (UVLO) features. The TPS746-Q1 has an
internal foldback current limit that helps reduce the
thermal dissipation during short-circuit events.
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– DRV (6-pin WSON), RθJA = 80.3°C/W
– DRB (8-pin WSON), RθJA = 62.0°C/W
2 Applications
Device Information (1)
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Automotive head units
Front and rear cameras
Automotive cluster displays
Telematics control units
Medium, short range radar
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Wettable flank
WSON (6)
2.00 mm × 2.00 mm
TPS746-Q1
Wettable flank
WSON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN
VOUT
VIN
VOUT
IN
OUT
FB
IN
OUT
Cff
TPS746-Q1
RPG*
TPS746-Q1
CIN
COUT
CIN
R1
R2
COUT
EN
RPG
*
EN
PG
GND
PG
GND
*Pull-up resistor not required
for push-pull option
*Pull-up resistor not required
for push-pull option
Typical Application: Fixed Voltage Version
Typical Application: Adjustable Voltage Version
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Product Folder Links: TPS746-Q1
Copyright © 2021 Texas Instruments Incorporated
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