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LM2937ET-3.3 Fiches technique(PDF) 1 Page - Texas Instruments |
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LM2937ET-3.3 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 19 page LM2937-2.5, LM2937-3.3 www.ti.com SNVS015E – FEBRUARY 1998 – REVISED APRIL 2013 LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators Check for Samples: LM2937-2.5, LM2937-3.3 1 FEATURES DESCRIPTION The LM2937-2.5 and LM2937-3.3 are positive voltage 2 • Fully Specified for Operation Over −40°C to regulators capable of supplying up to 500 mA of load +125°C current. Both regulators are ideal for converting a • Output Current in Excess of 500 mA (400mA common 5V logic supply, or higher input supply for SOT-223 package) voltage, to the lower 2.5V and 3.3V supplies to power VLSI ASIC's and microcontrollers. Special circuitry • Output Trimmed for 5% Tolerance Under All has been incorporated to minimize the quiescent Operating Conditions current to typically only 10 mA with a full 500 mA load • Wide Output Capacitor ESR Range, 0.01 Ω up current when the input to output voltage differential is to 5 Ω greater than 5V. • Internal Short Circuit and Thermal Overload The LM2937 requires an output bypass capacitor for Protection stability. As with most regulators utilizing a PNP pass • Reverse Battery Protection transistor, the ESR of this capacitor remains a critical design parameter, but the LM2937-2.5 and LM2937- • 60V Input Transient Protection 3.3 include special compensation circuitry that • Mirror Image Insertion Protection relaxes ESR requirements. The LM2937 is stable for all ESR ratings less than 5 Ω. This allows the use of low ESR chip capacitors. The regulators are also suited for automotive applications, with built in protection 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 Figure 1. TO-220 Plastic Package Figure 2. SOT-223 Plastic Package Front View Front View See Package Number NDE0003B See Package Number DCY0004A Figure 3. DDPAK/TO-263 Surface-Mount Package Figure 4. DDPAK/TO-263 Surface-Mount Package Top View Side View 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 © 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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Description similaire - LM2937ET-3.3 |
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