产品详细信息

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.1 Vin (Max) (V) 30 Vin (Min) (V) 2 Vout (Max) (V) 29 Vout (Min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (uVrms) 160 Iq (Typ) (mA) 0.075 Thermal resistance θJA (°C/W) 52 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR @ 100 KHz (dB) 57 Dropout voltage (Vdo) (Typ) (mV) 380 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.1 Vin (Max) (V) 30 Vin (Min) (V) 2 Vout (Max) (V) 29 Vout (Min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (uVrms) 160 Iq (Typ) (mA) 0.075 Thermal resistance θJA (°C/W) 52 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR @ 100 KHz (dB) 57 Dropout voltage (Vdo) (Typ) (mV) 380 Operating temperature range (C) -40 to 125
SOIC (D) 8 19 mm² 3.91 x 4.9 WSON (DRG) 8 9 mm² 3 x 3
  • Wide Input Range: Up to 30 V
  • Rated Output Current of 100 mA
  • Low Dropout: 380 mV (Typ) at 100 mA
  • Low Quiescent Current: 75 µA (Typ)
  • Tight Line Regulation: 0.03% (Typ)
  • Tight Load Regulation: 0.04% (Typ)
  • High VO Accuracy
    • 1.4% at 25°C
    • 2% Over Temperature
  • Can Be Used as a Regulator or Reference
  • Stable With Low ESR (>12 mΩ) Capacitors
  • Current- and Thermal-Limiting Features
  • LP2950 Only (3-Pin)
    • Fixed-Output Voltages of 5 V, 3.3 V, and 3 V
  • LP2951 Only (8-Pin Package)
    • Fixed- or Adjustable-Output Voltages:
      5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
    • Low-Voltage Error Signal on Falling Output
    • Shutdown Capability
    • Remote Sense Capability for Optimal Output
      Regulation and Accuracy
  • Wide Input Range: Up to 30 V
  • Rated Output Current of 100 mA
  • Low Dropout: 380 mV (Typ) at 100 mA
  • Low Quiescent Current: 75 µA (Typ)
  • Tight Line Regulation: 0.03% (Typ)
  • Tight Load Regulation: 0.04% (Typ)
  • High VO Accuracy
    • 1.4% at 25°C
    • 2% Over Temperature
  • Can Be Used as a Regulator or Reference
  • Stable With Low ESR (>12 mΩ) Capacitors
  • Current- and Thermal-Limiting Features
  • LP2950 Only (3-Pin)
    • Fixed-Output Voltages of 5 V, 3.3 V, and 3 V
  • LP2951 Only (8-Pin Package)
    • Fixed- or Adjustable-Output Voltages:
      5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
    • Low-Voltage Error Signal on Falling Output
    • Shutdown Capability
    • Remote Sense Capability for Optimal Output
      Regulation and Accuracy

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 LP295x Adjustable Micropower Voltage Regulators with Shutdown 数据表 (Rev. I) PDF | HTML 12 Nov 2014
应用手册 L1 和 L2 电动汽车充电器电动汽车服务设备设计注意事项 (Rev. B) PDF | HTML 下载英文版本 (Rev.B) 16 Jul 2021
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 下载英文版本 (Rev.B) PDF | HTML 16 Sep 2020
应用手册 ESR, Stability, and the LDO Regulator (Rev. A) 07 Jan 2020
应用手册 A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
应用手册 Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) 17 Aug 2018
EVM 用户指南 LP2951 EVM User's Guide (Rev. A) 05 Jan 2018
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
技术文章 How to use an LDO as a load switch 01 Feb 2016
技术文章 Two ways LDOs save power in the IoT 17 Aug 2015
技术文章 How to use an LDO to protect a power source 25 Jul 2015
应用手册 A Topical Index of TI SVS Application Notes . 15 Jun 2015
应用手册 AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 06 May 2013
应用手册 AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) 25 Apr 2013
应用手册 AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 24 Apr 2013
应用手册 AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 23 Apr 2013
应用手册 AN-1950 Silently Powering Low Noise Applications (Rev. A) 22 Apr 2013
应用手册 What Gives in Dropout? Low Dropout Regulator Performance Near Dropout 08 Oct 2010
应用手册 简化的 LDO PSRR 测量 下载最新的英文版本 (Rev.A) PDF | HTML 28 Jul 2010
应用手册 3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A) 14 Jun 2010
应用手册 Packaging Limit Ranges of Linear Regulators 08 May 2010
应用手册 Simple Power Solution Using LDOs for the DM365 (Rev. A) 11 Sep 2009
应用手册 Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
应用手册 Low-Voltage Current Loop Transmitter 02 Aug 2007
应用手册 Battery Charging 21 Mar 2007
应用手册 Linear and Switching Voltage Regulator Fundamental Part 1 21 Mar 2007
应用手册 Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) 13 Oct 2006
应用手册 Understanding LDO Dropout 09 May 2005
白皮书 Versatility of the LM5030 PWM Push-Pull Controller 01 Dec 2003
应用手册 Extending the Input Voltage Range of an LDO Regulator 16 Aug 2002
应用手册 Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999
应用手册 Technical Review Of Low Dropout Voltage Regulator Operation And Performance 30 Aug 1999
应用手册 Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range 11 Jun 1999

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LP2951EVM — LP2951 固定/可调微功耗低压降 (LDO) 稳压器评估模块

LP2951 器件是双极低压降 (LDO) 电压稳压器,可适应高达 30V 的宽输入电源电压范围,具有高达 100mA 的输出负载。LP2951EVM 可实现设计灵活性,使用户能够添加或删除输入和输出电容器以及旁路电容器。此外,LP2951EVM 可使用户能够以固定输出电压模式或可调输出电压模式操作器件,从而实现对 LP2951 器件的完整评估设置。
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LP2951 PSpice Transient Model (Rev. A)

SNVM037A.ZIP (23 KB) - PSpice Model
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LP2951 Unencrypted PSpice Transient Model

SNVMAO3.ZIP (1 KB) - PSpice Model
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SOIC (D) 8 了解详情
SON (DRG) 8 了解详情

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