Product details

Output options Adjustable Output Iout (Max) (A) 1.5 Vin (Max) (V) 5.5 Vin (Min) (V) 0.8 Vout (Max) (V) 3.5 Vout (Min) (V) 0.8 Noise (uVrms) 13 Iq (Typ) (mA) 3 Thermal resistance θJA (°C/W) 27 Rating Catalog Load capacitance (Min) (µF) 0 Regulated outputs (#) 1 Features Enable, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 52 Dropout voltage (Vdo) (Typ) (mV) 55 Operating temperature range (C) -40 to 125
Output options Adjustable Output Iout (Max) (A) 1.5 Vin (Max) (V) 5.5 Vin (Min) (V) 0.8 Vout (Max) (V) 3.5 Vout (Min) (V) 0.8 Noise (uVrms) 13 Iq (Typ) (mA) 3 Thermal resistance θJA (°C/W) 27 Rating Catalog Load capacitance (Min) (µF) 0 Regulated outputs (#) 1 Features Enable, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 52 Dropout voltage (Vdo) (Typ) (mV) 55 Operating temperature range (C) -40 to 125
TO-263 (KTW) 7 154 mm² 10.1 x 15.24 VQFN (RGR) 20 12 mm² 3.5 x 3.5 VQFN (RGW) 20 25 mm² 5.0 x 5.0 VQFN (RGW) 20 25 mm² 5 x 5
  • Input Voltage Range: 0.8 V to 5.5 V
  • Soft-Start (SS) Pin Provides a Linear Start-Up With Ramp Time Set by External Capacitor
  • 1% Accuracy Over Line, Load, and Temperature
  • Supports Input Voltages as Low as 0.8 V With External Bias Supply
  • Adjustable Output (0.8 V to 3.6 V)
  • Ultra-Low Dropout: 55 mV at 1.5 A (Typical)
  • Stable With Any or No Output Capacitor
  • Excellent Transient Response
  • Open-Drain Power-Good (VQFN)
  • Active High Enable
  • Input Voltage Range: 0.8 V to 5.5 V
  • Soft-Start (SS) Pin Provides a Linear Start-Up With Ramp Time Set by External Capacitor
  • 1% Accuracy Over Line, Load, and Temperature
  • Supports Input Voltages as Low as 0.8 V With External Bias Supply
  • Adjustable Output (0.8 V to 3.6 V)
  • Ultra-Low Dropout: 55 mV at 1.5 A (Typical)
  • Stable With Any or No Output Capacitor
  • Excellent Transient Response
  • Open-Drain Power-Good (VQFN)
  • Active High Enable

The TPS742 series of low-dropout (LDO) linear regulators provide an easy-to-use, robust power-management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and well suited for powering many different types of processors and ASICs. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. Each LDO is stable with low-cost ceramic output capacitors, and the family is fully specified from –40°C to 125°C. The TPS742 devices are offered in a small 5-mm × 5-mm VQFN (RGW) and a small 3.5-mm × 3.5-mm VQFN (RGR) package, yielding a highly compact total solution size. For applications that require additional power dissipation, the DDPAK/TO-263 (KTW) package is also available.

The TPS742 series of low-dropout (LDO) linear regulators provide an easy-to-use, robust power-management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and well suited for powering many different types of processors and ASICs. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. Each LDO is stable with low-cost ceramic output capacitors, and the family is fully specified from –40°C to 125°C. The TPS742 devices are offered in a small 5-mm × 5-mm VQFN (RGW) and a small 3.5-mm × 3.5-mm VQFN (RGR) package, yielding a highly compact total solution size. For applications that require additional power dissipation, the DDPAK/TO-263 (KTW) package is also available.

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Technical documentation

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Type Title Date
* Data sheet TPS742 1.5-A Ultra-LDO With Programmable Soft-Start datasheet (Rev. N) 17 Nov 2016
Application note LDO Noise Demystified (Rev. B) 18 Aug 2020
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) 30 Aug 2019
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note LDO PSRR Measurement Simplified (Rev. A) 09 Aug 2017
Application note LDO Performance Near Dropout 08 Oct 2010
Application note Using New Thermal Metrics 15 Dec 2009
Application note Q3 2007 Issue Analog Applications Journal 10 Aug 2007
Application note Simultaneous power-down sequencing with the TPS74x01 family of linear regulators 10 Aug 2007
Application note A 3-A, 1.2-Vout linear regulator with 80% efficiency and Plost < 1W 10 Oct 2006
User guide TPS74x01EVM-118 User's Guide 20 Jun 2006

Design & development

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Package Pins Download
DDPAK/TO-263 (KTW) 7 View options
VQFN (RGR) 20 View options
VQFN (RGW) 20 View options

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