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LM117JAN Folha de dados(PDF) 1 Page - Texas Instruments |
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LM117JAN Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 24 page LM117JAN www.ti.com SNVS365A – MARCH 2006 – REVISED MARCH 2013 LM117JAN 3-Terminal Adjustable Regulator Check for Samples: LM117JAN Also, it makes an especially simple adjustable 1 FEATURES switching regulator, a programmable output regulator, 2 • Specified 0.5A or 1.5A Output Current or by connecting a fixed resistor between the • Adjustable Output Down to 1.2V adjustment pin and output, the LM117 can be used as a precision current regulator. Supplies with • Current Limit Constant with Temperature electronic shutdown can be achieved by clamping the • 80 dB Ripple Rejection adjustment terminal to ground which programs the • Output is Short-circuit Protected output to 1.2V where most loads draw little current. For the negative complement, see LM137 series data DESCRIPTION sheet. The LM117 adjustable 3-terminal positive voltage regulator is capable of supplying either 0.5A or 1.5A Connection Diagrams 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 CASE IS OUTPUT remains fully functional even if the adjustment Figure 1. (TO-3) terminal is disconnected. Metal Can Package Normally, no capacitors are needed unless the device Bottom View is situated more than 6 inches from the input filter Steel Package capacitors in which case an input bypass is needed. Package Number K0002C 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 CASE IS OUTPUT the regulator is “floating” and sees only the input-to- output differential voltage, supplies of several Figure 2. (TO) hundred volts can be regulated as long as the Metal Can Package maximum input to output differential is not exceeded, Bottom View i.e., avoid short-circuiting the output. Package Number NDT0003A Table 1. LM117 Series Packages Part Number Suffix Package Design Load Current K TO-3 1.5A NDT TO 0.5A 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, 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. |
Nº de peça semelhante - LM117JAN_15 |
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Descrição semelhante - LM117JAN_15 |
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