产品详细信息

Output options Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 26 Vin (Min) (V) 6 Vout (Max) (V) 15 Vout (Min) (V) 5 Fixed output options (V) 5, 8, 9, 10, 12, 15 Noise (uVrms) 150 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Accuracy (%) 2 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 500 Operating temperature range (C) -40 to 125, -40 to 85
Output options Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 26 Vin (Min) (V) 6 Vout (Max) (V) 15 Vout (Min) (V) 5 Fixed output options (V) 5, 8, 9, 10, 12, 15 Noise (uVrms) 150 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 22 Regulated outputs (#) 1 Features Accuracy (%) 2 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 500 Operating temperature range (C) -40 to 125, -40 to 85
SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-263 (KTT) 3 155 mm² 10.16 x 15.24 WSON (NGN) 8 16 mm² 4 x 4
  • Input Voltage Range = 6 V to 26 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • Input Voltage Range = 6 V to 26 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

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技术文档

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类型 项目标题 下载最新的英语版本 日期
* 数据表 LM2940x 1-A Low Dropout Regulator 数据表 (Rev. J) PDF | HTML 22 Dec 2014
选择指南 Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
应用手册 Linear power for automated industrial systems 09 Jan 2015
更多文献资料 LM2940-5.0 MD8 1A LOW DROPOUT ADJUSTABLE REGULATOR 20 Dec 2012
应用手册 Linear and Switching Voltage Regulator Fundamental Part 1 21 Mar 2007

设计和开发

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封装 引脚数 下载
(NEB) 3 了解详情
DDPAK/TO-263 (KTT) 3 了解详情
SOT-223 (DCY) 4 了解详情
TO-220 (NDE) 3 了解详情
WSON (NGN) 8 了解详情

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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