LM317K STEEL/NOPB Power Management ICs - PMIC by Texas Instruments

IC V REG ADJ +1.2/37V TO-3-2 317

Semiconductors - ICs>Power Management ICs - PMIC>Voltage Regulators
Status: Unknown
Series: -
RoHS: Unknown
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The LM117 and LM317-N series of adjustable 3-pin positive voltage regulators are capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range and a wide temperature 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. The LM117 and LM317-N offer full overload protection such as current limit, thermal overload protection and safe area protection. All 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 that are difficult to achieve with standard 3-terminal regulators. Because the regulator is floating and detects 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. That is, avoid short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM117 and LM317-N can be also 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. For applications requiring greater output current, see data sheets for LM150 series (3 A), SNVS772, and LM138 series (5 A), SNVS771. For the negative complement, see LM137 (SNVS778) series data sheet.

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Specifications

Output Type Adjustable
Input Voltage Min 3V
Input Voltage Max 40V
Fixed Output Voltage Nom. -
Adjustable Output Voltage Min 1.2V
Adjustable Output Voltage Max 37V
Output Current 1.5A
Linear Regulator Case Style TO-3
No. of Pins 3Pins
Operating Temperature Min 0°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL -
SVHC No SVHC (27-Jun-2018)
RoHS Phthalates Compliant Yes
Base Number 317
IC Generic Number 317
No. of Outputs 1Outputs
Output Voltage Adjustable Range 1.2V to 37V
Output Voltage Max 37V
Output Voltage Min 1.2V
Primary Input Voltage 40V
Supply Voltage Min 3V
Termination Type Through Hole
Voltage Regulator Type Positive Adjustable

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