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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
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Product details

Parameters

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 (uVrms) 600 Iq (Typ) (mA) 0.001 Thermal resistance θJA (°C/W) 231 Load capacitance (Min) (µF) 0.47 Rating Catalog Regulated outputs (#) 1 Features Power Good Accuracy (%) 4 Dropout voltage (Vdo) (Typ) (mV) 105 Operating temperature range (C) -40 to 85 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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 The usual PNP pass transistor has been replaced by a PMOS pass element.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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet TPS797xx Ultra-Low IQ, 50-mA Low-Dropout Linear Regulators With Power Good Output in SC70 Package datasheet (Rev. J) Dec. 23, 2016
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guide TPS79733EVM LDO Regulator Evaluation Module (Rev. A) Jun. 02, 2003

Design & development

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

Hardware development

EVALUATION BOARD Download
49
Description

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 (...)

Design tools & simulation

SIMULATION MODEL Download
SLVMB49.ZIP (84 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB50.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB51.ZIP (85 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB52.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB53.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB54.ZIP (85 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB55.ZIP (84 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB56.ZIP (2 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
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document-generic Schematic
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Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology
TIDA-00254 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 (...)
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REFERENCE DESIGNS Download
Universal AC Input Audio Supply 24V/30Wavg (70Wpk) (3.3V @ 100mA)
PMP6588 — This reference design provides a compact power solution for 70W (peak) audio systems. This supply accepts a universal AC input, and uses a UCC28610 quasi-resonant flyback controller to generate an isolated 24V. Auxiliary 5V/1.5A and 3.3V/0.1A outputs are also provided. This design is capable of (...)
Design files

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 5 View options

Ordering & quality

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