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LM140KG-5MD8 Folha de dados(PDF) 1 Page - Texas Instruments |
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LM140KG-5MD8 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 14 page LM140K www.ti.com SNVS994 – JULY 2013 LM140K 3-Terminal Positive Regulator Check for Samples: LM140K 1 FEATURES DESCRIPTION The LM140K monolithic 3-terminal positive voltage 2 • Complete Specifications at 1A Load regulator employs internal current-limiting, thermal • Output Voltage Tolerances of ±4% at Tj = 25°C shutdown and safe-area compensation, making them • Internal Thermal Overload Protection essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. • Internal Short-circuit Current Limit They are intended as fixed voltage regulators in a • Output Transistor Safe Area Protection wide range of applications including local (on-card) • P+ Product Enhancement Tested regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply. The LM140K is available in 5V, 12V and 15V options in the steel TO-3 power package. Typical Applications *Required if the regulator is located far from VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 > 3 IQ, the power supply filter. load regulation (Lr) ≈ [(R1 + R2)/R1] (Lr of **Although no output capacitor is needed LM140K-5.0). for stability, it does help transient response. (If needed, use 0.1 μF, ceramic disc). Figure 2. Adjustable Output Regulator Figure 1. Fixed Output Regulator ΔIQ = 1.3 mA over line and load changes. Figure 3. Current 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 © 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 - LM140KG-5MD8 |
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Descrição semelhante - LM140KG-5MD8 |
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