Product details

Output options Adjustable Output Iout (Max) (A) 1.5 Vin (Max) (V) 5.5 Vin (Min) (V) 0.8 Vout (Max) (V) 3.6 Vout (Min) (V) 0.8 Noise (uVrms) 20 Iq (Typ) (mA) 1 Thermal resistance θJA (°C/W) 36 Rating Catalog Load capacitance (Min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 PSRR @ 100 KHz (dB) 28 Dropout voltage (Vdo) (Typ) (mV) 60 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) 3.6 Vout (Min) (V) 0.8 Noise (uVrms) 20 Iq (Typ) (mA) 1 Thermal resistance θJA (°C/W) 36 Rating Catalog Load capacitance (Min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 2 PSRR @ 100 KHz (dB) 28 Dropout voltage (Vdo) (Typ) (mV) 60 Operating temperature range (C) -40 to 125
VQFN (RGW) 20 25 mm² 5.0 x 5.0 VQFN (RGW) 20 25 mm² 5 x 5 VSON (DRC) 10 9 mm² 3.00 x 3.00 VSON (DRC) 10 9 mm² 3 x 3
  • VOUT Range: 0.8 V to 3.6 V
  • Ultralow VIN Range: 0.8 V to 5.5 V
  • VBIAS Range 2.7 V to 5.5 V
  • Low Dropout: 60 mV Typical at 1.5 A, VBIAS = 5 V
  • Power Good (PG) Output Allows Supply Monitoring or Provides a Sequencing Signal for Other Supplies
  • 2% Accuracy Over Line, Load, and Temperature
  • Programmable Soft-Start Provides Linear Voltage Startup
  • VBIAS Permits Low VIN Operation With Good Transient Response
  • Stable With Any Output Capacitor ≥ 2.2 µF
  • Available in a Small, 3-mm × 3-mm × 1-mm VSON-10 and 5 × 5 QFN-20 Packages
  • VOUT Range: 0.8 V to 3.6 V
  • Ultralow VIN Range: 0.8 V to 5.5 V
  • VBIAS Range 2.7 V to 5.5 V
  • Low Dropout: 60 mV Typical at 1.5 A, VBIAS = 5 V
  • Power Good (PG) Output Allows Supply Monitoring or Provides a Sequencing Signal for Other Supplies
  • 2% Accuracy Over Line, Load, and Temperature
  • Programmable Soft-Start Provides Linear Voltage Startup
  • VBIAS Permits Low VIN Operation With Good Transient Response
  • Stable With Any Output Capacitor ≥ 2.2 µF
  • Available in a Small, 3-mm × 3-mm × 1-mm VSON-10 and 5 × 5 QFN-20 Packages

The TPS748 low-dropout (LDO) linear regulator provides 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 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2 µF, and is fully specified for TJ = –40°C to 125°C. The TPS748 is offered in a small, 3-mm × 3-mm, VSON-10 package, yielding a highly compact, total solution size. The device is also available in a 5 × 5 QFN-20 package for compatibility with the TPS744.

The TPS748 low-dropout (LDO) linear regulator provides 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 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 2.2 µF, and is fully specified for TJ = –40°C to 125°C. The TPS748 is offered in a small, 3-mm × 3-mm, VSON-10 package, yielding a highly compact, total solution size. The device is also available in a 5 × 5 QFN-20 package for compatibility with the TPS744.

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Technical documentation

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Type Title Date
* Data sheet TPS748 1.5-A Low-Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. L) PDF | HTML 10 Mar 2017
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 08 Jan 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note Extracting a Lumped Output Impedance Model With SIMPLIS or SiMetrix 11 Jun 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note Power Solution using LDO's (Rev. A) 25 Mar 2010
Application note Simple Power Solution Using LDOs for the DM365 (Rev. A) 11 Sep 2009
Application note Simple Power Solution Using LDOs for the DM365 04 Aug 2009
Application note Simple Power Solution Using LDOs For TMS320C2834x MCU 24 Jul 2009
EVM User's guide TPS74701EVM-177 and TPS74801EVM-177 User's Guide (Rev. A) 04 Dec 2007
Analog Design Journal Q3 2007 Issue Analog Applications Journal 10 Aug 2007
Analog Design Journal Simultaneous power-down sequencing with the TPS74x01 family of linear regulators 10 Aug 2007

Design & development

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Simulation model

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Simulation model

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Schematic

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Package Pins Download
VQFN (RGW) 20 View options
VSON (DRC) 10 View options

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