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LM2937IMP-10 Arkusz danych(PDF) 1 Page - Texas Instruments |
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LM2937IMP-10 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 24 page LM2937 www.ti.com SNVS100E – MARCH 2000 – REVISED APRIL 2013 LM2937 500 mA Low Dropout Regulator Check for Samples: LM2937 1 FEATURES DESCRIPTION The LM2937 is a positive voltage regulator capable of 2 • Fully Specified for Operation Over −40°C to supplying up to 500 mA of load current. The use of a +125°C PNP power transistor provides a low dropout voltage • Output Current in Excess of 500 mA characteristic. With a load current of 500 mA the • Output Trimmed for 5% Tolerance Under all minimum input to output voltage differential required for the output to remain in regulation is typically 0.5V Operating Conditions (1V ensured maximum over the full operating • Typical Dropout Voltage of 0.5V at Full Rated temperature range). Special circuitry has been Load Current incorporated to minimize the quiescent current to • Wide Output Capacitor ESR Range, up to 3 Ω typically only 10 mA with a full 500 mA load current when the input to output voltage differential is greater • Internal Short Circuit and Thermal Overload than 3V. Protection • Reverse Battery Protection The LM2937 requires an output bypass capacitor for stability. As with most low dropout regulators, the • 60V Input Transient Protection ESR of this capacitor remains a critical design • Mirror Image Insertion Protection parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The LM2937 is stable for all ESR below 3 Ω. This allows the use of low ESR chip capacitors. Ideally suited for automotive applications, the LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps and up to +60V/ −50V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in. Connection Diagrams Front View Front View Figure 1. TO-220 Plastic Package Figure 2. SOT-223 Plastic Package See Package Number NDE0003B See Package Number DCY0004A Top View Side View Figure 3. DDPAK/TO-263 Surface-Mount Package Figure 4. DDPAK/TO-263 Surface-Mount Package See Package Number KTT0003B See Package Number KTT0003B 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 © 2000–2013, 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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