Product details

Output options Adjustable Output Iout (Max) (A) 0.8 Vin (Max) (V) 16 Vin (Min) (V) 2.5 Vout (Max) (V) 5.5 Vout (Min) (V) 1 Noise (uVrms) 18 Iq (Typ) (mA) 5.5 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 475 Operating temperature range (C) -40 to 125
Output options Adjustable Output Iout (Max) (A) 0.8 Vin (Max) (V) 16 Vin (Min) (V) 2.5 Vout (Max) (V) 5.5 Vout (Min) (V) 1 Noise (uVrms) 18 Iq (Typ) (mA) 5.5 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 475 Operating temperature range (C) -40 to 125
HSOIC (DDA) 8 19 mm² 4.9 x 3.9 WSON (NGT) 8 16 mm² 4 x 4
  • Input Supply Voltage: 2.5 V to 16V
  • Output Voltage Range: 1 V to 5.5 V
  • Designed for Use With Low-ESR Ceramic
    Capacitors
  • Very Low Output Noise
  • 8-Lead SO PowerPAD and WSON Surface-
    Mount Packages
  • < 10-µA Quiescent Current in Shutdown
  • Low Ground Pin Current at all Loads
  • Overtemperature and Overcurrent Protection
  • –40°C to 125°C Operating Junction Temperature
    Range
  • Input Supply Voltage: 2.5 V to 16V
  • Output Voltage Range: 1 V to 5.5 V
  • Designed for Use With Low-ESR Ceramic
    Capacitors
  • Very Low Output Noise
  • 8-Lead SO PowerPAD and WSON Surface-
    Mount Packages
  • < 10-µA Quiescent Current in Shutdown
  • Low Ground Pin Current at all Loads
  • Overtemperature and Overcurrent Protection
  • –40°C to 125°C Operating Junction Temperature
    Range

The LP3878-ADJ is an 800-mA, adjustable output, voltage regulator designed to provide high performance and low noise in applications requiring output voltages as low as 1 V.

Using an optimized VIP (Vertically Integrated PNP) process, the LP3878-ADJ delivers superior performance:

  • Ground Pin Current: Typically 5.5 mA at 800-mA load, and 180 µA at 100-µA load.
  • Low Power Shutdown: The LP3878-ADJ draws less than 10-µA quiescent current when the SHUTDOWN pin is pulled low.
  • Precision Output: Ensured output voltage accuracy is 1% at room temperature.
  • Low Noise: Broadband output noise is only 18 µV (typical) with a 10-nF bypass capacitor.

The LP3878-ADJ is an 800-mA, adjustable output, voltage regulator designed to provide high performance and low noise in applications requiring output voltages as low as 1 V.

Using an optimized VIP (Vertically Integrated PNP) process, the LP3878-ADJ delivers superior performance:

  • Ground Pin Current: Typically 5.5 mA at 800-mA load, and 180 µA at 100-µA load.
  • Low Power Shutdown: The LP3878-ADJ draws less than 10-µA quiescent current when the SHUTDOWN pin is pulled low.
  • Precision Output: Ensured output voltage accuracy is 1% at room temperature.
  • Low Noise: Broadband output noise is only 18 µV (typical) with a 10-nF bypass capacitor.

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Technical documentation

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Type Title Date
* Data sheet LP3878-ADJ Micropower 800-mA Low-Noise "Ceramic Stable" Adjustable Voltage Regulator for 1-V to 5-V Applications datasheet (Rev. D) 09 Feb 2015
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
Technical article How LDOs contribute to power efficiency 13 May 2016
User guide AN-1409 LP3878-ADJ Evaluation Board (Rev. D) 02 Jun 2013
Application note AN-2145 Power Considerations for SDI Products (Rev. B) 26 Apr 2013
Application note AN-2146 Power Design for SDI and Other Noise-Sensitive Devices (Rev. A) 26 Apr 2013
Application note AN-1950 Silently Powering Low Noise Applications (Rev. A) 22 Apr 2013
User guide High-IF Sub-sampling Receiver Subsystem User Guide 27 Jan 2012
User guide SP16130CH4RB Low IF Receiver Reference Design User Guide 27 Jan 2012
White paper Using Power to Improve Signal-Path Performance 01 Aug 2006

Design & development

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

Evaluation board

LP3878-ADJEVAL — Micropower 800mA Low Noise `Ceramic Stable` Adjustable Voltage Regulator for 1V to 5V Applications

The LP3878-ADJ is an 800 mA low-dropout linear regulator whose output voltage can be externally set to any value between 1V and 5.5 V using two resistors. This application note gives information about the evaluation board supplied to demonstrate the function of this part. This board is designed to (...)

In stock
Limit: 5
Evaluation board

TSW16DX370EVM — TSW16DX370EVM Evaluation Module

The TSW16DX370EVM is a reference design board used to evaluate the high performance receiver IF super-heterodyne subsystem solution including the following products from Texas Instruments:

  • TRF37B32 dual down-converting mixer with integrated IF amplifier
  • LMH6521 dual digitally controlled variable gain (...)
In stock
Limit: 3
Simulation model

LP3878-ADJ Unencrypted PSpice Transient Model (Rev. A)

SNVMBD1A.ZIP (2 KB) - PSpice Model
Simulation model

LP3878-ADJ PSpice Transient Model (Rev. A)

SNVMBD2A.ZIP (669 KB) - PSpice Model
CAD/CAE symbol

High-IF Sub-sampling Receiver Subsystem CAD Files

SNAC012.ZIP (3259 KB)
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Wideband radio frequency (RF) receivers allow greatly increased flexibility in radio designs. The wide instantaneous bandwidth allows flexible tuning without changing hardware and the ability to capture multiple channels at widely separated frequencies.

This reference design describes a wideband RF (...)

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The TIDA-00597 can provide very low noise output power for clock generator.
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The TIDA-00531 reference design features dynamic voltage scaling (DVS) as a power management solution to power CPU/DSP core voltages.
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TIDA-00353 — Equalization Optimization of a JESD204B Serial Link Reference Design

Employing equalization techniques is an effective way of compensating for channel loss in JESD204B high speed serial interfaces for data converters. This reference design features the ADC16DX370, a dual 16-bit, 370 MSPS analog-to-digital converter (ADC) that utilizes de-emphasis equalization to (...)
Reference designs

TIDA-00153 — JESD204B Link Latency Design Using a High Speed ADC

JESD204B links are the latest trend in data-converter digital interfaces. These links take advantage of high-speed serial-digital technology to offer many compelling benefits including improved channel densities. This reference design addresses one of the challenges of adopting the new interface: (...)
Package Pins Download
SO PowerPAD (DDA) 8 View options
WSON (NGT) 8 View options

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