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TPS786

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1.5-A, low-dropout voltage regulator with enable

Data sheet
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TPS7A52 ACTIVE 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator Alternative product offering much lower noise performance in smaller enhanced QFN package
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1.5-A, low-dropout voltage regulator with enable

TPS786

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 1.5 Vin (Max) (V) 5.5 Vin (Min) (V) 2.7 Vout (Max) (V) 5.2 Vout (Min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3 Noise (uVrms) 48 Iq (Typ) (mA) 0.26 Thermal resistance θJA (°C/W) 41 Load capacitance (Min) (µF) 1 Rating Catalog Regulated outputs (#) 1 Features Enable, Soft Start Accuracy (%) 2 PSRR @ 100 KHz (dB) 32 Dropout voltage (Vdo) (Typ) (mV) 390 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (DCQ) 6 46 mm² 6.5 x 7.06 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 VSON (DRB) 8 9 mm² 3.0 x 3.0 open-in-new Find other Linear regulators (LDO)

Features

  • 1.5-A Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to 5.5 V)
    Output Versions
  • High PSRR (49 dB at 10 kHz)
  • Ultralow Noise (48 µVRMS, TPS78630)
  • Fast Start-Up Time (50 µs)
  • Stable With a 1-µF Ceramic Capacitor
  • Excellent Load and Line Transient Response
  • Very Low Dropout Voltage (390 mV at Full Load,
    TPS78630)
  • 3 × 3 SON PowerPAD, 6-Pin SOT223 and 5-Pin
    DDPAK Package
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth®, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

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Description

The TPS786 family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in small outline, SOT223-6 and DDPAK-5 packages. Each device in the family is stable, with a small 1-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 390 mV at 1.5 A). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (265 µA, typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS78630 exhibits approximately 48 µVRMS of output voltage at 3-V output noise with a 0.1-µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR, low noise features, and the fast response time.

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Technical documentation

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Type Title Date
* Datasheet TPS786 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators datasheet (Rev. M) Sep. 30, 2015
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) Aug. 30, 2019
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical article LDO basics: noise – part 1 Jun. 14, 2017
User guide TPS786/795/79601DRB EVM Users Guide (Rev. A) Sep. 09, 2016
User guide DEM-SOT223LDO Demonstration Fixture Oct. 15, 2003
User guide DEM-TO263LDO Demonstration Fixture Oct. 15, 2003
User guide 1.5 Amp, High PSRR, Low-Noise, Low Dropout Linear Regulator EVM Sep. 26, 2002

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
5
Description

The Texas Instruments DEM-SOT223LDO demonstration module (DEM) helps designers evaluate the operation and performance of Texas Instruments low-dropout regulators (LDOs).  This module is compatible with most positive output LDOs offered in the SOT223 (DCQ) package.

View details
EVALUATION BOARD Download
document-generic User guide
20
Description
The TPS78601DRBEVM is a fully assembled and tested circuit for evaluating the TPS78601 low-dropout (LDO) low-power linear voltage regulator in the DRB (3 x 3mm, SON-8) package.
Features
  • 1.5A Low-Dropout Regulator with Enable
  • High PSRR (49 dB at 10 kHz)
  • Fast Start-Up Time (50µs)
  • Stable with a 1µF Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • 3 × 3 SON PowerPAD™, 6-Pin SOT223 and 5-Pin DDPAK Package
View details

Design tools & simulation

SIMULATION MODEL Download
SLVM603.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAY9.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ0.ZIP (69 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ1.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ2.ZIP (70 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ3.ZIP (68 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ4.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ5.ZIP (69 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ6.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ7.ZIP (70 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAZ8.ZIP (2 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Ethernet/IP Communications Dev Platform
TIDEP0003 — Targeted for Ethernet/IP slave communications, this development platform allows designers to mplement Ethernet/IP communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or (...)
document-generic Schematic
REFERENCE DESIGNS Download
EtherCAT Communications Dev Platform
TIDEP0001 — Targeted for EtherCAT slave communications, this development platform allows designers to implement real-time EtherCAT communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or (...)
document-generic Schematic
REFERENCE DESIGNS Download
PROFINET Communications Dev Platform
TIDEP0008 — Targeted for PROFINET slave communications, this development platform allows designers to implement PROFINET communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or industrial (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
PROFIBUS Communications Development Platform
TIDEP0002 — Targeted for PROFIBUS slave communications, this development platform allows designers to implement PROFIBUS communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or industrial (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
SON (DRB) 8 View options
SOT-223 (DCQ) 6 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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