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TLV743P

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300-mA low-IQ low-dropout (LDO) voltage regulator with enable

Data sheet
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300-mA low-IQ low-dropout (LDO) voltage regulator with enable

TLV743P

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Fixed Output Iout (Max) (A) 0.3 Vin (Max) (V) 5.5 Vin (Min) (V) 1.4 Vout (Max) (V) 3.3 Vout (Min) (V) 1 Fixed output options (V) 1, 1.05, 1.1, 1.2, 1.5, 1.8, 2.5, 2.8, 2.85, 3, 3.3 Noise (uVrms) 120 Iq (Typ) (mA) 0.034 Thermal resistance θJA (°C/W) 219 Load capacitance (Min) (µF) 1 Rating Catalog Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection, Output Discharge Accuracy (%) 1.4 PSRR @ 100 KHz (dB) 28 Dropout voltage (Vdo) (Typ) (mV) 122 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 X2SON (DQN) 4 1 mm² 1 x 1 open-in-new Find other Linear regulators (LDO)

Features

  • Input Voltage Range: 1.4 V to 5.5 V
  • Stable Operation With 1-µF Ceramic Output Capacitor
  • Foldback Overcurrent Protection
  • Packages:
    • SOT-23 (5)
    • X2SON (4)
  • Very Low Dropout: 125 mV at 300 mA (3.3 VOUT)
  • Accuracy: 1% (Typical), 1.4% (Maximum)
  • Low IQ: 34 µA
  • Available in Fixed-Output Voltages:
    1 V to 3.3 V
  • High PSRR: 50 dB at 1 kHz
  • Active Output Discharge

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Description

The TLV743P low-dropout linear regulator (LDO) is an ultra-small, low quiescent current LDO that sources 300 mA with good line and load transient performance. The device provides a typical accuracy of 1%.

The TLV743P is designed to be stable with a small output capacitor with a value of 1 µF. The TLV743P device provides foldback current control during device power up and enabling. This functionality is especially important in battery-operated devices.

The TLV743P provides an active pulldown circuit to quickly discharge output loads when the device is disabled.

The TLV743P is available in standard DBV (SOT-23) and DQN (X2SON) packages.

 

 

 

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TLV703 ACTIVE 300-mA, high-PSRR, low-IQ, low-dropout voltage regulator Similar device with better PSRR performance and lower Iq
TLV733P ACTIVE 300-mA, capacitor-free, low-IQ, low-dropout voltage regulator with enable Previous generation of this device that can operate without output capacitors
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TLV751 ACTIVE 500-mA, low-IQ, high-PSRR, dual-channel low-dropout (LDO) voltage regulator 500-mA dual-channel LDO in 2x2 package with improved PSRR

Technical documentation

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Type Title Date
* Datasheet TLV743P 300-mA, Low-Dropout Regulator datasheet (Rev. C) Jun. 27, 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
Technical article LDO basics: noise – part 1 Jun. 14, 2017
User guide Universal Low-Dropout (LDO) Linear Voltage Regulator EVM User's Guide Oct. 12, 2016
User guide TLV73312PDQN-643 Evaluation Module Oct. 02, 2014

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
20
Description

The MULTIPKGLDOEVM-823 evaluation module (EVM) helps you evaluate the operation and performance of several common packages of linear regulators for possible use in circuit applications. This particular EVM configuration has a DRB, DRV, DQN and DBV footprint for you to solder and (...)

Features
  • Supports almost all LDO linear regulators in DBV, DRB, DRV and DQN packages
View details

Design tools & simulation

SIMULATION MODEL Download
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Reference designs

REFERENCE DESIGNS Download
VBus protection with eFuse for solid state drive modules reference design
TIDA-050028 — The TIDA-050028 reference design provides the front end protection of a SSD module and showcases the fully featured power tree for standard 3.3-V, 1.8-V, and 1.5-V rails. This size optimized design helps customers with appropriate selection of the integrated circuit protection device, load switches (...)
document-generic Schematic document-generic User guide
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15W Dual Isolated Output Bias Power Supply with 4mW Zero Standby Power Consumption Reference Design
TIDA-01560 — This reference design is a 15-W bias power supply with two isolated outputs (12 V/1.125A and 3.3 V/0.3A) and a total standby power consumption of 4 mW under a 220-V AC input. The controller uses primary-side regulation (PSR) and detects a wake-up signal from the UCC24650 secondary-side voltage-droop (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options
X2SON (DQN) 4 View options

Ordering & quality

Information included:
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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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