LM340

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1.5A、35V 线性稳压器

产品详情

Output options Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 35 Vin (min) (V) 7.5 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Noise (µVrms) 40 Iq (typ) (mA) 8 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2.5 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) 0 to 125
Output options Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 35 Vin (min) (V) 7.5 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Noise (µVrms) 40 Iq (typ) (mA) 8 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2.5 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) 0 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7 TO-220 (NDE) 3 46.5328 mm² 10.16 x 4.58 TO-220 (NDG) 3 193.548 mm² 10.16 x 19.05 TO-263 (KTT) 3 154.8384 mm² 10.16 x 15.24
  • Output Current up to 1.5 A
  • Available in Fixed 5-V, 12-V, and 15-V Options
  • Output Voltage Tolerances of ±2% at TJ = 25°C (LM340A)
  • Line Regulation of 0.01% / V of at 1-A Load (LM340A)
  • Load Regulation of 0.3% / A (LM340A)
  • Internal Thermal Overload, Short-Circuit and SOA Protection
  • Available in Space-Saving SOT-223 Package
  • Output Capacitance Not Required for Stability
  • Output Current up to 1.5 A
  • Available in Fixed 5-V, 12-V, and 15-V Options
  • Output Voltage Tolerances of ±2% at TJ = 25°C (LM340A)
  • Line Regulation of 0.01% / V of at 1-A Load (LM340A)
  • Load Regulation of 0.3% / A (LM340A)
  • Internal Thermal Overload, Short-Circuit and SOA Protection
  • Available in Space-Saving SOT-223 Package
  • Output Capacitance Not Required for Stability

The LM340 and LM7805 Family monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.5-A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

LM7805 is also available in a higher accuracy and better performance version (LM340A). Refer to LM340A specifications in the LM340A Electrical Characterisitcs table.

The LM340 and LM7805 Family monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.5-A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

LM7805 is also available in a higher accuracy and better performance version (LM340A). Refer to LM340A specifications in the LM340A Electrical Characterisitcs table.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM340, LM340A and LM7805 Family Wide VIN 1.5-A Fixed Voltage Regulators 数据表 (Rev. L) PDF | HTML 2016年 9月 29日
应用手册 A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27日
选择指南 Low Dropout Regulators Quick Reference Guide (Rev. P) 2018年 3月 21日
模拟设计期刊 防止过热与 EMI 损坏的工业级设计考量 英语版 2014年 6月 6日
应用手册 AB-12 Wide Adjustable Range PNP Voltage Regulator (Rev. B) 2013年 5月 6日
应用手册 AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 2013年 5月 6日
应用手册 AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 2013年 5月 6日
应用手册 AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 2013年 5月 6日
应用手册 AN-256 Circuitry for Inexpensive Relative Humidity Measurement (Rev. B) 2013年 5月 6日
应用手册 AN-298 Isolation Techniques for Signal Conditioning (Rev. B) 2013年 5月 6日
应用手册 AN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B) 2013年 5月 5日
应用手册 Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 2013年 5月 5日
应用手册 Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise (Rev. B) 2013年 5月 5日
更多文献资料 Die D/S LM7808C MDC Series 3-Terminal Positive Regulators 2012年 9月 28日
更多文献资料 Die D/S LM6172 MDC Dual Hi Spd, Low Pwr, Low Distortion Voltage Feedback Amp 2012年 9月 27日
应用手册 Packaging Limits Range of Linear Regulators 2010年 5月 8日
应用手册 Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 2008年 6月 4日
用户指南 A User's Guide to Compensating Low-Dropout Regulators 2007年 3月 21日
应用手册 App Note 1148 Linear Regulators: Theory of Op & Comp 2004年 5月 10日
应用手册 Understanding the Terms and Definitions of LDO Voltage Regulators 1999年 10月 21日

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  • MSL 等级/回流焊峰值温度
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