LM337L

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100mA 负电压可调节线性稳压器

产品详情

Output options Adjustable Output, Negative Output Iout (max) (A) 0.1 Vin (max) (V) -4.2 Vin (min) (V) -40 Vout (max) (V) -1.2 Vout (min) (V) -37 Noise (µVrms) 38 Iq (typ) (mA) 0.05 Thermal resistance θJA (°C/W) 111 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.4 Dropout voltage (Vdo) (typ) (mV) 2200 Operating temperature range (°C) -25 to 100
Output options Adjustable Output, Negative Output Iout (max) (A) 0.1 Vin (max) (V) -4.2 Vin (min) (V) -40 Vout (max) (V) -1.2 Vout (min) (V) -37 Noise (µVrms) 38 Iq (typ) (mA) 0.05 Thermal resistance θJA (°C/W) 111 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.4 Dropout voltage (Vdo) (typ) (mV) 2200 Operating temperature range (°C) -25 to 100
SOIC (D) 8 29.4 mm² 4.9 x 6 TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • Adjustable Output Down to 1.2 V
  • Ensured 100-mA Output Current
  • Line Regulation Typically 0.01%/V
  • Load Regulation Typically 0.1%
  • Current Limit Constant With Temperature
  • Eliminates the Need to Stock Many Voltages
  • Standard 3-Pin Transistor Package
  • 80-dB Ripple Rejection
  • Output is Short Circuit Protected
  • Adjustable Output Down to 1.2 V
  • Ensured 100-mA Output Current
  • Line Regulation Typically 0.01%/V
  • Load Regulation Typically 0.1%
  • Current Limit Constant With Temperature
  • Eliminates the Need to Stock Many Voltages
  • Standard 3-Pin Transistor Package
  • 80-dB Ripple Rejection
  • Output is Short Circuit Protected

The LM337L is an adjustable 3-pin negative voltage regulator capable of supplying 100 mA over a –1.2-V to –37-V output range. The LM337L is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM337L is packaged in a standard, easy-to-use TO-92 transistor package.

In addition to higher performance than fixed regulators, the LM337L offers full overload protection. Included on the chip are current limit, thermal overload protection, and safe area protection. All overload protection circuitry remains fully functional even if the adjustment pin is disconnected.

Normally, only a single 1-µF solid tantalum output capacitor is required unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is required. A larger output capacitor can be added to improve transient response. The adjustment pin can be bypassed to achieve very high ripple rejection ratios, which are difficult to achieve with standard 3-pin regulators.

Besides replacing fixed regulators, the LM337L is useful in a wide variety of other applications. Because the regulator is floating and monitors only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded.

The LM337L makes a simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337L can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment pin to ground, which programs the output to 1.2 V, where most loads draw little current.

The LM337L is available in a standard TO-92 transistor package and a standard SO-8 surface mount package. The LM337L is rated for operation over a –25°C to 125°C range.

For applications requiring output current in excess of 0.5 A and 1.5 A, The LM137 series may be suitable. For the positive complement, the LM117 and LM317L series are options.

The LM337L is an adjustable 3-pin negative voltage regulator capable of supplying 100 mA over a –1.2-V to –37-V output range. The LM337L is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM337L is packaged in a standard, easy-to-use TO-92 transistor package.

In addition to higher performance than fixed regulators, the LM337L offers full overload protection. Included on the chip are current limit, thermal overload protection, and safe area protection. All overload protection circuitry remains fully functional even if the adjustment pin is disconnected.

Normally, only a single 1-µF solid tantalum output capacitor is required unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is required. A larger output capacitor can be added to improve transient response. The adjustment pin can be bypassed to achieve very high ripple rejection ratios, which are difficult to achieve with standard 3-pin regulators.

Besides replacing fixed regulators, the LM337L is useful in a wide variety of other applications. Because the regulator is floating and monitors only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded.

The LM337L makes a simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337L can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment pin to ground, which programs the output to 1.2 V, where most loads draw little current.

The LM337L is available in a standard TO-92 transistor package and a standard SO-8 surface mount package. The LM337L is rated for operation over a –25°C to 125°C range.

For applications requiring output current in excess of 0.5 A and 1.5 A, The LM137 series may be suitable. For the positive complement, the LM117 and LM317L series are options.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM337L 3-Terminal Adjustable Regulator 数据表 (Rev. E) PDF | HTML 2016年 12月 9日
应用手册 Cost-Optimized, High-Performance Front-End Design for Analog Input Modules PDF | HTML 2022年 6月 22日
应用手册 A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27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 Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 2013年 5月 5日
更多文献资料 Die D/S LM337L MDC 3-Terminal Adj Regulator 2012年 9月 21日
应用手册 TO-92 Packing Options / Ordering Instructions (Rev. A) 2010年 6月 23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
应用手册 Understanding the Terms and Definitions of LDO Voltage Regulators 1999年 10月 21日

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SOIC (D) 8 查看选项
TO-92 (LP) 3 查看选项

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