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LM337LM Arkusz danych(PDF) 1 Page - Texas Instruments |
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LM337LM Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 13 page LM337L www.ti.com SNVS780D – MAY 1998 – REVISED MAY 2013 LM337L 3-Terminal Adjustable Regulator Check for Samples: LM337L Normally, only a single 1 μF solid tantalum output 1 FEATURES capacitor is needed unless the device is situated 2 • Adjustable Output Down to 1.2V more than 6 inches from the input filter capacitors, in • Ensured 100mA Output Current which case an input bypass is needed. A larger output capacitor can be added to improve transient • Line Regulation Typically 0.01%/V response. The adjustment terminal can be bypassed • Load Regulation Typically 0.1% to achieve very high ripple rejection ratios which are • Current Limit Constant With Temperature difficult to achieve with standard 3-terminal regulators. • Eliminates the Need to Stock Many Voltages • Standard 3-Lead Transistor Package Besides replacing fixed regulators, the LM337L is useful in a wide variety of other applications. Since • 80 dB Ripple Rejection the regulator is “floating” and sees only the input-to- • Output is Short Circuit Protected output differential voltage, supplies of several • Available in the 6-Bump DSBGA Package hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. • See AN-1112 (Literature Number SNVA009) for DSBGA Considerations Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, DESCRIPTION or by connecting a fixed resistor between the adjustment and output, the LM337L can be used as a The LM337L is an adjustable 3-terminal negative precision current regulator. Supplies with electronic voltage regulator capable of supplying 100mA over a shutdown can be achieved by clamping the 1.2V to 37V output range. It is exceptionally easy to adjustment terminal to ground which programs the use and requires only two external resistors to set the output to 1.2V where most loads draw little current. output voltage. Furthermore, both line and load regulation are better than standard fixed regulators. The LM337L is available in a standard TO-92 Also, the LM337L is packaged in a standard TO-92 transistor package, SO-8 surface mount package, transistor package which is easy to use. and in our new 12 mil diameter bump DSBGA package. The LM337L is rated for operation over a In addition to higher performance than fixed −25°C to +125°C range. regulators, the LM337L offers full overload protection. Included on the chip are current limit, thermal For applications requiring greater output current in overload protection and safe area protection. All excess of 0.5A and 1.5A, see LM137 series data overload protection circuitry remains fully functional sheets. For the positive complement, see series even if the adjustment terminal is disconnected. LM117 and LM317L data sheets. Typical Application 1.2V-25V Adjustable Regulator 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 © 1998–2013, 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. |
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