Product details

Product type Power Management Category Tested Die Rating Military
Product type Power Management Category Tested Die Rating Military
CFP (NAC) 16 63 mm² 9.91 x 6.35 TO-CAN (K) 2 989 mm² 38.938 x 25.4 TO-CAN (NDT) 3 92 mm² 10.03 x 9.14
  • Available with Radiation Ensured
    • Total Ionizing Dose 100 krad(Si)
    • Low Dose Rate Qualified 100 krad(Si)
  • Adjustable Output down to 1.2V
  • Specified 0.5A or 1.5A 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
  • 80 dB Ripple Rejection
  • Output is Short-Circuit Protected

All trademarks are the property of their respective owners.

  • Available with Radiation Ensured
    • Total Ionizing Dose 100 krad(Si)
    • Low Dose Rate Qualified 100 krad(Si)
  • Adjustable Output down to 1.2V
  • Specified 0.5A or 1.5A 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
  • 80 dB Ripple Rejection
  • Output is Short-Circuit Protected

All trademarks are the property of their respective owners.

The LM117HV are adjustable 3-terminal positive voltage regulators capable of supplying either 0.5A or 1.5A over a 1.2V to 57V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators.

In addition to higher performance than fixed regulators, the LM117HV series offers full overload protection available only in IC's. 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 terminal is disconnected.

Normally, 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 rejections ratios which are difficult to achieve with standard 3-terminal regulators.

Besides replacing fixed regulators, the LM117HV is useful in a wide variety of other applications. 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, i.e. do not short the output to ground.

Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM117HV can 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 1.2V where most loads draw little current.

The LM117HV are adjustable 3-terminal positive voltage regulators capable of supplying either 0.5A or 1.5A over a 1.2V to 57V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators.

In addition to higher performance than fixed regulators, the LM117HV series offers full overload protection available only in IC's. 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 terminal is disconnected.

Normally, 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 rejections ratios which are difficult to achieve with standard 3-terminal regulators.

Besides replacing fixed regulators, the LM117HV is useful in a wide variety of other applications. 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, i.e. do not short the output to ground.

Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM117HV can 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 1.2V where most loads draw little current.

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Technical documentation

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Type Title Date
* Data sheet LM117HVQML 3-Terminal Adjustable Regulator datasheet (Rev. D) 16 Apr 2013
* SMD LM117HVQML SMD 5962-07229 21 Jun 2016
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
More literature Die D/S LM117HVH MDS 3-Terminal Adj Regulator 13 Sep 2012
More literature Die D/S LM117HVKG MD8 3-Terminal Adj Regulator 13 Sep 2012
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

Design & development

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