Product
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TPS73433-Q1
  • TPS73433-Q1
  • TPS73433-Q1

TPS73433-Q1

ACTIVE

Automotive 250-mA, low-IQ, low-dropout voltage regulator with enable

Texas Instruments TPS73433-Q1 Product Info

1 April 2026 3

Parameters

Rating

Automotive

Vin (max) (V)

6.5

Vin (min) (V)

2.7

Iout (max) (A)

0.25

Output options

Fixed Output

Vout (max) (V)

3.3

Vout (min) (V)

3.3

Fixed output options (V)

3.3

Noise (µVrms)

28

PSRR at 100 KHz (dB)

24

Iq (typ) (mA)

0.04

Features

Enable

Thermal resistance θJA (°C/W)

200

Load capacitance (min) (µF)

2

Regulated outputs (#)

1

Accuracy (%)

2

Dropout voltage (Vdo) (typ) (mV)

125

Operating temperature range (°C)

-40 to 105

Package

SOT-23-THN (DDC)-5-8.12 mm² 2.9 x 2.8

Features

  • Qualified for Automotive Applications
  • 250mA Low Dropout Regulator with EN
  • Low IQ: 44µA
  • Multiple Output Voltage Versions Available:
    • Fixed 3.3V Outputs
    • Adjustable Outputs from 1.25V to 6.2V
  • High PSRR: 60dB at 1kHz
  • Ultra-Low Noise: 28µVRMS
  • Fast Start-Up Time: 45µs
  • Stable with a Low-ESR, 2.0µF Typical Output Capacitance
  • Excellent Load/Line Transient Response
  • 2% Overall Accuracy (Load/Line/Temp)
  • ThinSOT-23 Package

  • Qualified for Automotive Applications
  • 250mA Low Dropout Regulator with EN
  • Low IQ: 44µA
  • Multiple Output Voltage Versions Available:
    • Fixed 3.3V Outputs
    • Adjustable Outputs from 1.25V to 6.2V
  • High PSRR: 60dB at 1kHz
  • Ultra-Low Noise: 28µVRMS
  • Fast Start-Up Time: 45µs
  • Stable with a Low-ESR, 2.0µF Typical Output Capacitance
  • Excellent Load/Line Transient Response
  • 2% Overall Accuracy (Load/Line/Temp)
  • ThinSOT-23 Package

Description

The TPS734xx-Q1 family of low-dropout (LDO), low-power linear regulators offers excellent ac performance with very low ground current. High power-supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient response are provided while consuming a very low 44µA (typical) ground current. The TPS734xx-Q1 is stable with ceramic capacitors and uses an advanced BiCMOS fabrication process to yield a typical dropout voltage of 125mV at 250mA output. The TPS734xx-Q1 uses a precision voltage reference and feedback loop to achieve overall accuracy of 2% over all load, line, process, and temperature variations. It is fully specified from TA = –40°C to +105°C and is offered in a low-profile ThinSOT-23 package that are ideal for wireless handsets, printers, and WLAN cards.

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