Product details

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.05 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8, 2.5, 2.7, 2.8, 3, 3.3, 5 Noise (uVrms) 190 Iq (Typ) (mA) 0.017 Thermal resistance θJA (°C/W) 180 Rating Catalog Load capacitance (Min) (µF) 4.7 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 27 Dropout voltage (Vdo) (Typ) (mV) 48 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.05 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8, 2.5, 2.7, 2.8, 3, 3.3, 5 Noise (uVrms) 190 Iq (Typ) (mA) 0.017 Thermal resistance θJA (°C/W) 180 Rating Catalog Load capacitance (Min) (µF) 4.7 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 27 Dropout voltage (Vdo) (Typ) (mV) 48 Operating temperature range (C) -40 to 125
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-23 (DBV) 5
  • 50-mA Low-Dropout Regulator
  • Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and Adjustable Versions
  • Only 17 uA Quiescent Current at 50 mA
  • 1 uA Quiescent Current in Standby Mode
  • Dropout Voltage Typically 35 mV at 50 mA
  • Over Current Limitation
  • \x9640°C to 125°C Operating Junction Temperature Range
  • 5-Pin SOT-23 (DBV) Package
  • 50-mA Low-Dropout Regulator
  • Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and Adjustable Versions
  • Only 17 uA Quiescent Current at 50 mA
  • 1 uA Quiescent Current in Standby Mode
  • Dropout Voltage Typically 35 mV at 50 mA
  • Over Current Limitation
  • \x9640°C to 125°C Operating Junction Temperature Range
  • 5-Pin SOT-23 (DBV) Package

The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultralow-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultralow quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual PNP pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low \x97 typically 35 mV at 50 mA of load current (TPS77050) \x97 and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultralow (28 uA maximum) and is stable over the entire range of output load current (0 mA to 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life.

The TPS770xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C. The TPS770xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage versions and in a variable version (programmable over the range of 1.2 V to 5.5 V).

The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultralow-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultralow quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual PNP pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low \x97 typically 35 mV at 50 mA of load current (TPS77050) \x97 and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultralow (28 uA maximum) and is stable over the entire range of output load current (0 mA to 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life.

The TPS770xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C. The TPS770xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage versions and in a variable version (programmable over the range of 1.2 V to 5.5 V).

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Technical documentation

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Type Title Date
* Data sheet Ultra Low-Power 50-mA Low-Dropout Linear Regulators datasheet (Rev. D) 04 May 2001
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
User guide DEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A) 02 Jun 2005

Design & development

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

Evaluation board

DEM-SOT23LDO — DEM-SOT23LDO Compatible With Most Positive-Output LDO Regulators in 5- or 6-Lead SOT23 (DBV) Package

User guide: PDF
Not available on TI.com
Evaluation board

EVMX777BG-01-00-00 — J6Entry, RSP and TDA2E-17 CPU Board Evaluation Module

J6Entry, RSP and TDA2E-17 CPU Board EVM is an evaluation platform designed to speed up development efforts and reduce time to market for Infotainment  reconfigurable Digital Cluster or Integrated Digital Cockpit and ADAS applications. The CPU board integrates key peripherals such as parallel (...)
Evaluation board

EVMX777G-01-20-00 — J6Entry/RSP Infotainment (CPU+Display+JAMR3) Evaluation Module

The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.

The main CPU board integrates these key peripherals such as Ethernet or HDMI, while (...)

Simulation model

TPS77050 PSpice Transient Model

SLVM795.ZIP (22 KB) - PSpice Model
Simulation model

TPS77012 PSpice Transient Model

SLVM803.ZIP (21 KB) - PSpice Model
Simulation model

TPS77018 PSpice Transient Model

SLVM805.ZIP (22 KB) - PSpice Model
Simulation model

TPS77025 PSpice Transient Model

SLVM806.ZIP (22 KB) - PSpice Model
Simulation model

TPS77028 PSpice Transient Model

SLVM808.ZIP (21 KB) - PSpice Model
Simulation model

TPS77030 PSpice Transient Model

SLVM809.ZIP (21 KB) - PSpice Model
Simulation model

TPS77033 PSpice Transient Model

SLVM810.ZIP (22 KB) - PSpice Model
Reference designs

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Electric meter developers often prefer to separate the energy measurement function from the host processor functions such as ANSI/IEC data tables, DLMS/COSEM, tariff management, and communications. This design demonstrates a method for keeping these meter functions separated by using an individual (...)
Schematic: PDF
Reference designs

TIDM-AUX-MODULE — Battery Management and Auxiliary Power Supply Options for E-Meters

Smart electric meters are required to maintain normal operation for a short period of time after the electric grid fails. This reference design details methods by which designers can meet this requirement when using an advanced, smart meter MCU. Designers can use this design to evaluate options for (...)
Schematic: PDF
Reference designs

TIDEP0076 — 3D Machine Vision Reference Design Based on AM572x Processor with DLP® Structured Light

The TIDEP0076 3D machine vision design describes an embedded 3D scanner based on the structured light principle. A digital camera along with a Sitara™ AM57xx processor System on Chip (SoC)  is used to capture reflected light patterns from a DLP4500-based projector. Subsquent processing (...)
Schematic: PDF
Reference designs

TIDEP0046 — Monte-Carlo Simulation on AM57x Using OpenCL for DSP Acceleration Reference Design

TI’s high performance ARM® Cortex®-A15 based AM57x processors also integrate C66x DSPs. These DSPs were designed to handle high signal and data processing tasks that are often required by industrial, automotive and financial applications. The AM57x OpenCL implementation makes it easy (...)
Schematic: PDF
Reference designs

TIDEP0047 — Power and Thermal Design Considerations Using TI's AM57x Processor Reference Design

This is a reference design based on the AM57x processor and companion TPS659037 power management integrated circuit (PMIC).  This design specifically highlights important power and thermal design considerations and techniques for systems designed with AM57x and TPS659037.  It includes (...)
Schematic: PDF
Reference designs

TIDC-BLE-METER-READING — Bluetooth Low Energy for Energy Monitoring Reference Design

The TIDC-BLE-METER-READING reference design focuses on an application for reading an energy monitor device over a Bluetooth® low energy (BLE) link using the SimpleLink™ CC2650 multi-standard wireless MCU and corresponding SensorTag module. The module is then connected to the hardware (...)
Schematic: PDF
Reference designs

TIDM-3OUTSMTSTRP — Three Output Smart Power Strip Reference Design

This design implements a high accuracy single phase embedded metering smart power strip application using an MSP430 MCU. Built to support of measuring AC voltage, current, active power, reactive power, apparent power, frequency, power factor with 3 socket measured individually. Additional hardware (...)
Schematic: PDF
Reference designs

TIDM-THREEPHASEMETER-F449 — Low-Cost Three-Phase Electricity Meter Reference Design

The design implements a basic three-phase electric meter system using the MSP430F449 smart meter SoC, the LMV324 precision op amps, and TPS76333 LDO regulator . It meets all of the requirements for ANSI C12.20 and IEC-62053 Class 0.5 meters.The MSP430F449 SoC is a low-cost option for engineers (...)
Schematic: PDF
Reference designs

TIDM-ENERGY-WATCHDOG — Single-Phase Electricity Sub-Meter for Smart Buildings

The Energy Watchdog design is a complete tool used to measure and display the energy consumption of an individual load in a smart building such as major home appliances. With this tool engineers can quickly evaluate TI’s solution a low-cost energy measurement application. This reference (...)
User guide: PDF
Schematic: PDF
Package Pins Download
SOT-23 (DBV) 5 View options

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