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Linear & low-dropout (LDO) regulators

LP2985

ACTIVE

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

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Data sheet

LP2985

ACTIVE
Data sheet Order now

Product details

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 Rating Catalog Load capacitance (Min) (µF) 2.2 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
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 Rating Catalog Load capacitance (Min) (µF) 2.2 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
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-23 (DBV) 5 —
  • 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)
  • 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)

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.

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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Technical documentation

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Type Title Date
* Data sheet LP2985 150-mA, Low-Noise, Low-Dropout Regulator With Shutdown datasheet (Rev. P) PDF | HTML 04 Feb 2022
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note 16-Bit 8-Channel PLC Analog Input Module with High Voltage (±150 V) Common Mode 27 Apr 2020
Application note ESR, Stability, and the LDO Regulator (Rev. A) 07 Jan 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) 17 Aug 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes 15 Jun 2015
Application note Linear power for automated industrial systems 09 Jan 2015
Analog Design Journal Techniques for accurate PSRR measurements 28 Oct 2013
Application note AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 06 May 2013
Application note AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) 25 Apr 2013
Application note AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 24 Apr 2013
Application note AN-1950 Silently Powering Low Noise Applications (Rev. A) 22 Apr 2013
Application note LDO Performance Near Dropout 08 Oct 2010
Application note 3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A) 14 Jun 2010
Application note 3.6V – 5.5V Input, LDO with Dual-Level Output Reference Design for MSP430 (Rev. A) 14 Jun 2010
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Simple Power Solution Using LDOs for the DM365 (Rev. A) 11 Sep 2009
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Linear and Switching Voltage Regulator Fundamental Part 1 21 Mar 2007
Application note Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) 13 Oct 2006
Application note Understanding LDO Dropout 09 May 2005
More literature LP2981/85 Product Clip 09 Sep 2004
Application note Extending the Input Voltage Range of an LDO Regulator 16 Aug 2002
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance 30 Aug 1999
Application note Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range 11 Jun 1999

Design & development

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

Evaluation board

DRV8835EVM — DRV8835 Evaluation Module

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.

document-pdfAcrobat User guide
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Evaluation board

DRV8837CEVM — 1-A Low-Voltage H-Bridge Evaluation Module

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 (...)
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Evaluation board

LDC1314KEYPAD-EVM — LDC1314 inductance-to-digital converter evaluation module: 16 button keypad

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.

Not available on TI.com
Evaluation board

LMG1025-Q1EVM — LMG1025-Q1 GaN low-side driver and GaN FET LiDAR evaluation module

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.
Not available on TI.com
Simulation model

LP2985-18 PSpice Transient Model LP2985-18 PSpice Transient Model

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Simulation model

LP2985-29 PSpice Transient Model LP2985-29 PSpice Transient Model

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Simulation model

LP2985-50 PSpice Transient Model LP2985-50 PSpice Transient Model

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Simulation model

LP2985-28 PSpice Transient Model LP2985-28 PSpice Transient Model

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Simulation model

LP2985-10 PSpice Transient Model LP2985-10 PSpice Transient Model

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Simulation model

LP2985-25 PSpice Transient Model LP2985-25 PSpice Transient Model

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Simulation model

LP2985-30 PSpice Transient Model LP2985-30 PSpice Transient Model

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Simulation model

LP2985-33 PSpice Transient Model LP2985-33 PSpice Transient Model

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Simulation model

LP2985-18 Unencrypted PSpice Transient Model LP2985-18 Unencrypted PSpice Transient Model

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Simulation model

LP2985-10 Unencrypted PSpice Transient Model LP2985-10 Unencrypted PSpice Transient Model

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Simulation model

LP2985-30 Unencrypted PSpice Transient Model LP2985-30 Unencrypted PSpice Transient Model

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Simulation model

LP2985-33 Unencrypted PSpice Transient Model LP2985-33 Unencrypted PSpice Transient Model

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Simulation model

LP2985-29 Unencrypted PSpice Transient Model LP2985-29 Unencrypted PSpice Transient Model

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Simulation model

LP2985-25 Unencrypted PSpice Transient Model LP2985-25 Unencrypted PSpice Transient Model

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Simulation model

LP2985-50 Unencrypted PSpice Transient Model LP2985-50 Unencrypted PSpice Transient Model

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Simulation model

LP2985-28 Unencrypted PSpice Transient Model LP2985-28 Unencrypted PSpice Transient Model

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Reference designs

TIDA-01598 — Low Side, High Bandwidth Current Amp and Fault Detection for Solar Inverters Reference Design

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 (...)
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SOT-23 (DBV) 5 View options

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