ホーム パワー・マネージメント リニア・レギュレータと低ドロップアウト (LDO) レギュレータ

LM117JAN

アクティブ

ミリタリー・グレード、1.5A、調整可能な出力、リニア・レギュレータ / LDO

製品詳細

Output options Adjustable Output Iout (max) (A) 1.5 Vin (max) (V) 40 Vin (min) (V) 4.2 Vout (max) (V) 37 Vout (min) (V) 1.25 Fixed output options (V) 0 Rating Military Noise (µVrms) 75 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 39 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 1200 Operating temperature range (°C) -55 to 125
Output options Adjustable Output Iout (max) (A) 1.5 Vin (max) (V) 40 Vin (min) (V) 4.2 Vout (max) (V) 37 Vout (min) (V) 1.25 Fixed output options (V) 0 Rating Military Noise (µVrms) 75 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 39 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 1200 Operating temperature range (°C) -55 to 125
TO-CAN (NDT) 3 91.6742 mm² 10.03 x 9.14
  • Specified 0.5A or 1.5A Output Current
  • Adjustable Output Down to 1.2V
  • Current Limit Constant with Temperature
  • 80 dB Ripple Rejection
  • Output is Short-circuit Protected

All trademarks are the property of their respective owners.

  • Specified 0.5A or 1.5A Output Current
  • Adjustable Output Down to 1.2V
  • Current Limit Constant with Temperature
  • 80 dB Ripple Rejection
  • Output is Short-circuit Protected

All trademarks are the property of their respective owners.

The LM117 adjustable 3-terminal positive voltage regulator is capable of supplying either 0.5A or 1.5A over a 1.2V to 37V output range. It is exceptionally easy to use and requires 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 LM117 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 rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Besides replacing fixed regulators, the LM117 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., avoid short-circuiting the output.

Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment pin and output, the LM117 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.

For the negative complement, see LM137 series data sheet.

The LM117 adjustable 3-terminal positive voltage regulator is capable of supplying either 0.5A or 1.5A over a 1.2V to 37V output range. It is exceptionally easy to use and requires 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 LM117 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 rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Besides replacing fixed regulators, the LM117 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., avoid short-circuiting the output.

Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment pin and output, the LM117 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.

For the negative complement, see LM137 series data sheet.

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種類 タイトル 最新の英語版をダウンロード 日付
* データシート LM117JAN 3-Terminal Adjustable Regulator データシート (Rev. A) 2013年 3月 20日

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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