TL317CDR Part Information

Details for TL317CDR by Texas Instruments

Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators

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Part Description

The TL317 is an adjustable three-terminal positivevoltage regulator capable of supplying 100 mA over an output-voltage range of 1.25 V to 32 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. This regulator offers full overload protection available only in integrated circuits. Included on the chip are current-limiting and thermal-overload protection. All overload-protection circuitry remains fully functional, even when ADJUSTMENT is disconnected. Normally, no capacitors are required unless the device is situated far from the input filter capacitors, in which case an input bypass is required. An optional output capacitor can be added to improve transient response. ADJUSTMENT can be bypassed to achieve very high ripple rejection. In addition to replacing fixed regulators, the TL317 regulator is useful in a wide variety of other applications. Because 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. Its primary application is that of a programmable output regulator, but by connecting a fixed resistor between ADJUSTMENT and OUTPUT, this device can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping ADJUSTMENT to ground, programming the output to 1.25 V, where most loads draw little current.

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Part Features

  • Input Regulation Typically 0.01% Per Input-Voltage Change
  • Output Current Capability of 100 mA
  • Output Regulation Typically 0.5%
  • Output Voltage Range Adjustable From 1.25 V to 32 V When Used With an External Resistor Divider
  • Ripple Rejection Typically 80 dB

Part Specifications

Output Type Adjustable
Input Voltage Min 2.5V
Input Voltage Max 35V
Fixed Output Voltage Nom. -
Adjustable Output Voltage Min 1.2V
Adjustable Output Voltage Max 32V
Output Current 100mA
Linear Regulator Case Style SOIC
No. of Pins 8Pins
Operating Temperature Min 0°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
RoHS Phthalates Compliant Yes
Output Voltage Max 32V
Output Voltage Min 1.2V
RoHS Compliant

Alternative Part Descriptions

  • 100-mA, 35-V, adjustable linear voltage regulator with low-IQ | Texas Instruments
  • Linear voltage regulator [Texas Instruments] TL317CDR Linear voltage regulator | Distrelec

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