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LP2985

ACTIVE
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150-mA, 16-V, low-dropout voltage regulator with enable

Data sheet
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150-mA, 16-V, low-dropout voltage regulator with enable

LP2985

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Fixed Output Iout (Max) (A) 0.15 Vin (Max) (V) 16 Vin (Min) (V) 2.2 Vout (Max) (V) 10 Vout (Min) (V) 1.8 Fixed output options (V) 1.8, 2.5, 2.8, 2.9, 3, 3.3, 5, 10 Noise (uVrms) 30 Iq (Typ) (mA) 0.065 Thermal resistance θJA (°C/W) 206 Load capacitance (Min) (µF) 2.2 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 5 PSRR @ 100 KHz (dB) 40 Dropout voltage (Vdo) (Typ) (mV) 280 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 open-in-new Find other Linear regulators (LDO)

Features

  • Output Tolerance of
    • 1% (A Grade)
    • 1.5% (Standard Grade)
  • Ultra-Low Dropout, Typically
    • 280 mV at Full Load of 150 mA
    • 7 mV at 1 mA
  • Wide VIN Range: 16 V Max
  • Low IQ: 850 μA at Full Load at 150 mA
  • Shutdown Current: 0.01 μA Typ
  • Low Noise: 30 μVRMS With 10-nF Bypass Capacitor
  • Stable With Low-ESR Capacitors, Including Ceramic
  • Overcurrent and Thermal Protection
  • High Peak-Current Capability
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
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Description

The LP2985 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for both portable and nonportable applications. Available in voltages of 1.8 V, 2.5 V, 2.8 V, 2.9 V, 3 V, 3.1 V, 3.3 V, 5 V, and 10 V, the family has an output tolerance of 1% for the A version (1.5% for the non-A version) and is capable of delivering 150-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.

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Exact equivalent in functionality and parametrics to the compared device:
TPS7A24 ACTIVE 200-mA, 18-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with enable Pin-to-pin option with ultra-low-IQ (2 uA)

Technical documentation

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Type Title Date
* Datasheet LP2985 150-mA Low-noise Low-dropout Regulator With Shutdown datasheet (Rev. O) Jan. 29, 2015
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
Application note 16-Bit 8-Channel PLC Analog Input Module with High Voltage (±150 V) Common Mode Apr. 27, 2020
Application note ESR, Stability, and the LDO Regulator (Rev. A) Jan. 07, 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Application note Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) Aug. 17, 2018
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
Application note A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes Jun. 15, 2015
Application note Linear power for automated industrial systems Jan. 09, 2015
Application note Techniques for accurate PSRR measurements Oct. 28, 2013
Application note AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) May 06, 2013
Application note AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) Apr. 25, 2013
Application note AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) Apr. 24, 2013
Application note AN-1950 Silently Powering Low Noise Applications (Rev. A) Apr. 22, 2013
Application note LDO Performance Near Dropout Oct. 08, 2010
Application note 3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A) Jun. 14, 2010
Application note 3.6V – 5.5V Input, LDO with Dual-Level Output Reference Design for MSP430 (Rev. A) Jun. 14, 2010
Application note Packaging Limits Range of Linear Regulators May 08, 2010
Application note Simple Power Solution Using LDOs for the DM365 (Rev. A) Sep. 11, 2009
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun. 04, 2008
Application note Linear and Switching Voltage Regulator Fundamental Part 1 Mar. 21, 2007
Application note Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) Oct. 13, 2006
Application note Understanding LDO Dropout May 09, 2005
More literature LP2981/85 Product Clip Sep. 09, 2004
Application note Extending the Input Voltage Range of an LDO Regulator Aug. 16, 2002
Application note Understanding the Terms and Definitions of LDO Voltage Regulators Oct. 21, 1999
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance Aug. 30, 1999
Application note Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range Jun. 11, 1999

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
49
Description

The DRV8835 evaluation module (EVM) demonstrates the capabilities and performance of the DRV8835 motor driver from Texas Instruments. User can control the DRV8835 with an external microcontroller via signal header connectors or use on-board switches for stand-alone operation.

Features
  • 2.0 to 11V supply voltage range.
  • Split Vm/Vcc supply isolates motor voltage from logic supply.
  • Access to output signals through Kelvin contact for easy evaluation.
  • Jumper for switching between MCU or manual operation.
  • LP2985-50 5V regulator supplies high logic level and Vcc in manual operation mode, no (...)
View details
EVALUATION BOARD Download
document-generic User guide
49
Description
The DRV8837CEVM evaluation module (EVM) is a 3.3 V to 11 V, 1 A, brushed DC motor drive and control system based on the DRV8837C integrated brushed motor driver, compact MSP430G2131 microcontroller, and LP2985 Low-Dropout Regulator. The EVM allows for simple evaluation of the DRV8837C with a wide (...)
Features
  • 3.3 V to 11 V Operating Supply Voltage Range
  • Supports Up to 1 A Maximum Drive Current
  • Separate 3.3 V Logic Supply
  • Simple Control Interface with MSP430G2131
  • USB Connector for 5 V Motor Supply
View details
EVALUATION BOARD Download
document-generic User guide
199
Description

The LDC1314KEYPAD evaluation module implements a 16 snap dome button keypad using only one LDC1314 to multiplex all 16 buttons.

This design uses the LDC1314 but can also be replicated with the LDC1312, LDC1612 and LDC1614.

Features
  • Contactless buttons, with superior reliability over electrical/mechanical contact solutions
  • Can be easily used to implement ruggedized, environmentally sealed keypad and keyboard solutions for harsh environments
  • Supports simultaneous button presses
  • Temperature stable
  • Easily scalable to larger key arrays (...)
View details
EVALUATION BOARD Download
document-generic User guide
149
Description
The LMG1025-Q1EVM is a small, easy-to-use power stage with integrated resistive load (laser not included). It takes a short-pulse input that can either be buffered (and shortened further), or passed directly to the power stage.
Features
  • Demonstrates driver capability of 1-2 ns pulses > 50 A
  • Extremely short propagation delay: 3 ns typical, 4.5 ns max
  • 550 ps typical rise/fall time
  • Schmitt-trigger type CMOS inputs for robustness
  • Advanced layout with < 500 pH of inductace
View details

Design tools & simulation

SIMULATION MODEL Download
SLVMA17.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA18.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA19.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA20.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA21.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA22.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA23.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA24.ZIP (20 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB86.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB87.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB88.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB89.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB90.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB91.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB92.ZIP (1 KB) - PSpice Model
SIMULATION MODEL Download
SNVMB93.ZIP (1 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Low Side, High Bandwidth Current Amp and Fault Detection for Solar Inverters Reference Design
TIDA-01598 — This reference design provides a solution for an accurate shunt-based current measurement on the low side with an integrated fault-detection feature. It consists of a current sense amplifier which supports current sensing for a high bandwidth. The fault detection feature allows detection of (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality

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  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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