TPS797

ACTIVE

50-mA, ultra-low-IQ, low-dropout voltage regulator with power good

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS745 ACTIVE 500-mA, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good Alternative product offering lower noise and higher accuracy.

Product details

Output options Fixed Output Iout (max) (A) 0.05 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 3.3 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 2.85, 3, 3.3 Noise (µVrms) 600 Iq (typ) (mA) 0.001 Thermal resistance θJA (°C/W) 231 Rating Catalog Load capacitance (min) (µF) 0.47 Regulated outputs (#) 1 Features Power good Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 105 Operating temperature range (°C) -40 to 85
Output options Fixed Output Iout (max) (A) 0.05 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 3.3 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 2.85, 3, 3.3 Noise (µVrms) 600 Iq (typ) (mA) 0.001 Thermal resistance θJA (°C/W) 231 Rating Catalog Load capacitance (min) (µF) 0.47 Regulated outputs (#) 1 Features Power good Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 105 Operating temperature range (°C) -40 to 85
SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • 50-mA Low-Dropout Regulator
  • Ultra-Low 1.2-µA Quiescent Current at 10 mA
  • 5-Pin SC70 (DCK) Package
  • Integrated Power Good Output
  • Stable With Any Capacitor Greater Than 0.47 µF
  • Typical Dropout Voltage of 105 mV at 10 mA (TPS79733)
  • Over-Current Limitation
  • Operating Junction Temperature Range of –40°C to 85°C
  • 50-mA Low-Dropout Regulator
  • Ultra-Low 1.2-µA Quiescent Current at 10 mA
  • 5-Pin SC70 (DCK) Package
  • Integrated Power Good Output
  • Stable With Any Capacitor Greater Than 0.47 µF
  • Typical Dropout Voltage of 105 mV at 10 mA (TPS79733)
  • Over-Current Limitation
  • Operating Junction Temperature Range of –40°C to 85°C

The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.

The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet TPS797xx Ultra-Low IQ, 50-mA Low-Dropout Linear Regulators With Power Good Output in SC70 Package datasheet (Rev. J) PDF | HTML 23 Dec 2016
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 18 Feb 2021
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
EVM User's guide TPS79733EVM LDO Regulator Evaluation Module (Rev. A) 02 Jun 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS79733EVM — TPS79733 Evaluation Module

The purpose of this EVM is to facilitate evaluation of the TPS797xx family of LDO regulators. Each EVM package contains an SLVP199 test board with a TPS79733DCK low dropout linear regulator as well as supporting passive components. Also, the board's small size and side clips facilitate attaching it (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS79718 PSpice Transient Model

SLVMB49.ZIP (84 KB) - PSpice Model
Simulation model

TPS79718 Unencrypted PSpice Transient Model

SLVMB50.ZIP (2 KB) - PSpice Model
Simulation model

TPS797285 PSpice Transient Model

SLVMB55.ZIP (84 KB) - PSpice Model
Simulation model

TPS797285 Unencrypted PSpice Transient Model

SLVMB56.ZIP (2 KB) - PSpice Model
Simulation model

TPS79730 PSpice Transient Model

SLVMB54.ZIP (85 KB) - PSpice Model
Simulation model

TPS79730 Unencrypted PSpice Transient Model

SLVMB53.ZIP (2 KB) - PSpice Model
Simulation model

TPS79733 PSpice Transient Model

SLVMB51.ZIP (85 KB) - PSpice Model
Simulation model

TPS79733 Unencrypted PSpice Transient Model

SLVMB52.ZIP (2 KB) - PSpice Model
Reference designs

DLP4500-C350REF — High Resolution, Portable Light Steering Reference Design using DLP Technology

This reference design, featuring the DLP® 0.45” WXGA chipset and implemented in the DLP® LightCrafter™ 4500 evaluation module (EVM), enables flexible control of high resolution, accurate patterns for industrial, medical, and scientific applications. With a free USB-based GUI and (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00254 — Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology

The 3D Machine Vision reference design employs Texas Instruments DLP® Advanced Light Control Software Development Kit (SDK) for LightCrafter™ series controllers, which allows developers to easily construct 3D point clouds by integrating TI’s digital micromirror device (DMD) (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SOT-SC70 (DCK) 5 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos