LM317HV

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1.5A、60V、可調節線性穩壓器

產品詳情

Rating Catalog Vin (max) (V) 60 Vin (min) (V) 4.2 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 57 Vout (min) (V) 1.25 Noise (μVrms) 1710 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 0.05 Thermal resistance θJA (°C/W) 23 Load capacitance (min) (μF) 0 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 2250 Operating temperature range (°C) 0 to 125
Rating Catalog Vin (max) (V) 60 Vin (min) (V) 4.2 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 57 Vout (min) (V) 1.25 Noise (μVrms) 1710 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 0.05 Thermal resistance θJA (°C/W) 23 Load capacitance (min) (μF) 0 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 2250 Operating temperature range (°C) 0 to 125
TO-220 (NDE) 3 46.5328 mm2 10.16 x 4.58
  • Up to 60 V Input to Output Differential
  • 1.5-A Output Current
  • Line Regulation 0.01%/V (Typical)
  • Load Regulation 0.1% (Typical)
  • 80-dB Ripple Rejection (Typical)
  • Internal Short-Circuit Current Limiting Protection
  • Thermal Overload Protection
  • –55 to 150°C Operating Temperature Range
    (LM117HV)
  • 0 to 125°C Operating Temperature Range
    (LM317HV)
  • Up to 60 V Input to Output Differential
  • 1.5-A Output Current
  • Line Regulation 0.01%/V (Typical)
  • Load Regulation 0.1% (Typical)
  • 80-dB Ripple Rejection (Typical)
  • Internal Short-Circuit Current Limiting Protection
  • Thermal Overload Protection
  • –55 to 150°C Operating Temperature Range
    (LM117HV)
  • 0 to 125°C Operating Temperature Range
    (LM317HV)

The LMx17HV is an adjustable 3-terminal positive voltage regulator capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. It requires only two external resistors to set the output voltage. The LMx17HV is packaged in standard transistor packages that are easily mounted and handled.

The LMx17HV offers overload protection like current limit, thermal overload protection and safe area protection, which make the device blowout proof. The overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Since the regulator is floating and sees 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, or in other words, do not short the output to ground.

By connecting a fixed resistor between the adjustment and output, the LMx17HV can also be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current.

The LMx17HV is an adjustable 3-terminal positive voltage regulator capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. It requires only two external resistors to set the output voltage. The LMx17HV is packaged in standard transistor packages that are easily mounted and handled.

The LMx17HV offers overload protection like current limit, thermal overload protection and safe area protection, which make the device blowout proof. The overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Since the regulator is floating and sees 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, or in other words, do not short the output to ground.

By connecting a fixed resistor between the adjustment and output, the LMx17HV can also be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current.
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類型 標題 下載最新的英語版本 日期
* 數據表 LMx17HV High Voltage Three-Terminal Adjustable Regulator With Overload Protection 數據表 (Rev. D) PDF | HTML 2015年 9月 30日
應用手冊 A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27日
應用手冊 AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 2013年 5月 6日
應用手冊 AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 2013年 5月 6日
應用手冊 AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 2013年 5月 6日
應用手冊 Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 2013年 5月 5日
應用手冊 Packaging Limits Range of Linear Regulators 2010年 5月 8日
應用手冊 Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 2008年 6月 4日
應用手冊 Adjustable 3-Terminal Regulator for Low-Cost Battery Charging Systems 2002年 10月 3日
應用手冊 Understanding the Terms and Definitions of LDO Voltage Regulators 1999年 10月 21日

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