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Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 15 Vin (Min) (V) 2.7 Vout (Max) (V) 5.5 Vout (Min) (V) 1.3 Fixed output options (V) 2.5, 3, 3.3, 5 Noise (uVrms) 33 Iq (Typ) (mA) 1.7 Thermal resistance θJA (°C/W) 27 Load capacitance (Min) (µF) 0 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 2 Dropout voltage (Vdo) (Typ) (mV) 230 Operating temperature range (C) -40 to 85 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 open-in-new Find other Linear regulators (LDO)

Features

  • NEW DMOS TOPOLOGY:
    Ultra Low Dropout Voltage:
    230mV typ at 1A and 3.3V Output
    Output Capacitor NOT Required for Stability
  • FAST TRANSIENT RESPONSE
  • VERY LOW NOISE: 33µVRMS
  • HIGH ACCURACY: ±2% max
  • HIGH EFFICIENCY:
    IGND = 1.7mA at IOUT = 1A
    Not Enabled: IGND = 0.5µA
  • 2.5V, 2.7V, 3.0V, 3.3V, 5.0V AND ADJUSTABLE OUTPUT VERSIONS
  • THERMAL PROTECTION
  • SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5
  • APPLICATIONS
    • PORTABLE COMMUNICATION DEVICES
    • BATTERY-POWERED EQUIPMENT
    • MODEMS
    • BAR-CODE SCANNERS
    • BACKUP POWER SUPPLIES

All trademarks are the property of their respective owners.

open-in-new Find other Linear regulators (LDO)

Description

The REG104 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low dropout voltage (only 230mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 1.7mA (at IOUT = 1A) and drops to 0.5µA in not enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

The REG104 has very low output noise (typically 33µVRMS for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use in portable communications equipment. On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (–40°C to +85°C).

The REG104 is well protected—internal circuitry provides a current limit which protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG104 is available in the DDPAK-5 and the SOT223-5.

open-in-new Find other Linear regulators (LDO)
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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 11
Type Title Date
* Datasheet DMOS 1A Low-Dropout Regulator datasheet (Rev. G) Sep. 22, 2005
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 notes LDO Noise Demystified (Rev. A) Aug. 09, 2017
Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
Application notes Packaging Limits Range of Linear Regulators May 08, 2010
User guides DEM-SOT223LDO Demonstration Fixture Oct. 15, 2003
User guides DEM-TO263LDO Demonstration Fixture Oct. 15, 2003
More literature DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) Feb. 14, 2001

Design & development

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

Hardware development

EVALUATION BOARDS 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.

EVALUATION BOARDS Download
document-generic User guide
299
Description
The SN65DSI83EVM evaluation module (EVM) is a printed circuit board (PCB) that helps customers implement the SN65DSI85 device in system hardware.  This EVM can be used as a hardware reference design for any implementation using the SN65DSI83 device. This EVM includes (...)
Features
  • Plug and play design
  • Two input options for DSI video signal (QSH type connector and FX type connector)
  • Two output port options available for the LVDS output signals (QSH type connector and I-PEX type connector)
  • I2C interface to configure internal registers
  • LED backlight driver circuitry using TI's (...)
EVALUATION BOARDS Download
document-generic User guide
299
Description
The SN65DSI83Q1-EVM evaluation module (EVM) is a printed circuit board (PCB) that helps customers implement the SN65DSI83-Q1 device in system hardware.  This EVM includes on-board connectors for DSI input and LVDS output signals.  These connectors are for connecting (...)
Features
  • Plug and play design
  • Input options for DSI video signal (QSH-type connector and FX-type connector)
  • Output port options available for the LVDS output signals (QSH-type connector and I-PEX-type connector)
  • I2C interface to configure internal registers
  • LED backlight driver circuitry using TI's backlight (...)
EVALUATION BOARDS Download
document-generic User guide
299
Description
The SN65DSI85EVM evaluation module (EVM) is a printed circuit board (PCB) that helps customers implementthe SN65DSI85 device in system hardware. This EVM can be used as a hardware reference design for any implementation using the SN65DSI85 device. The SN65DSI85EVM includes (...)
Features
  • Plug and play design
  • Two input options for DSI video signal (QSH-type connector and FX-type connector)
  • Two output port options available for the LVDS output signals (QSH-type connector and I-PEX-type connector)
  • I2C interface to configure internal registers
  • LED backlight driver circuitry using TI's (...)
EVALUATION BOARDS Download
document-generic User guide
299
Description
The SN65DSI85Q1EVM is a PCB created to help customers implementing SN65DSI85Q1 in system hardware.  This EVM includes on-board connectors for DSI input and LVDS output signals.  These connectors are for connecting MIPI DPHY compliant DSI source and LVDS panels to the EVM.
Features
  • Plug and play design
  • Two input options for DSI video signal (QSH-type connector and FX-type connector)
  • Two output port options available for the LVDS output signals (QSH-type connector and I-PEX-type connector)
  • I2C interface to configure internal registers
  • Incorporates LED backlight driver circuitry (...)
EVALUATION BOARDS Download
document-generic User guide
49
Description

The TPS76918EVM-127 give designer an easy layout for using and evaluating TPS76918 SOT23 LDO in an application to regulate from 5V to a 1.8V output. It includes input and output capacitors.

Features

Same size and TO220 package. Simplifies designing the core power power supply for low power TMS320C54x DSPs.

EVALUATION BOARDS Download
document-generic User guide
49
EVALUATION BOARDS Download
document-generic User guide
49
Description

The purpose of this EVM is to facilitate evaluation of the TPS793xx family of LDO regulators. Each EVM package contains one SLVP191 test board, with either a TPS79301DBV linear regulator or a TPS79328DBV linear regulator, as well as supporting passive components. The TPS79301DBV adjustable device (...)

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Isolated Current Shunt/Voltage Measurement Reference Design for Automotive Battery Pack Monitoring
TIPD201 This TI Verified Design provides the theory, component selection, TINA-TI simulations, Verification & Measurement Performance, Altium Schematics, PCB Layout for automotive Battery Pack monitoring application.  The design uses a automotive AEC-Q100 qualified 12-bit, 4-Channel, 1Msps SAR ADC, (...)
document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

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

Ordering & quality

Support & training

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