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LM317LIPK データシート(PDF) 1 Page - Texas Instruments |
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LM317LIPK データシート(HTML) 1 Page - Texas Instruments |
1 / 17 page INPUT OUTPUT ADJUSTMENT LP PACKAGE (TOP VIEW) INPUT OUTPUT ADJUSTMENT PK PACKAGE (TOP VIEW) 1 2 3 4 8 7 6 5 INPUT OUTPUT OUTPUT ADJUSTMENT NC OUTPUT OUTPUT NC D PACKAGE (TOP VIEW) NC – No internal connection OUTPUT terminals are all internally connected. 1 2 3 4 8 7 6 5 INPUT NC NC ADJUSTMENT NC NC OUTPUT NC PW PACKAGE (TOP VIEW) NC – No internal connection LM317L www.ti.com SLCS144D – JULY 2004 – REVISED OCTOBER 2011 3-TERMINAL ADJUSTABLE REGULATOR Check for Samples: LM317L 1 FEATURES • Output Voltage Range Adjustable 1.2 V to 32 V • Output Regulation Typically 0.5% When Used With External Resistor Divider • Ripple Rejection Typically 80 dB • Output Current Capability of 100 mA • For Higher Output Current Requirements, • Input Regulation Typically 0.01% Per See LM317M (500 mA) and LM317 (1.5 A) Input-Voltage Change DESCRIPTION/ORDERING INFORMATION The LM317L is an adjustable three-terminal positive-voltage regulator capable of supplying 100 mA over an output-voltage range of 1.2 V to 32 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. In addition to higher performance than fixed regulators, 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 needed unless the device is situated far from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. ADJUSTMENT can be bypassed to achieve very high ripple rejection, which is difficult to achieve with standard three-terminal regulators. In addition to replacing fixed regulators, the LM317L regulator 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. 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 1.2 V, where most loads draw little current. The LM317LC is characterized for operation over the virtual junction temperature range of 0 °C to 125°C. The LM317LI is characterized for operation over the virtual junction temperature range of –40°C to 125°C. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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同様の説明 - LM317LIPK |
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