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LM2937ET-5.0 データシート(PDF) 1 Page - Texas Instruments |
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LM2937ET-5.0 データシート(HTML) 1 Page - Texas Instruments |
1 / 30 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2937 SNVS100F – MARCH 2000 – REVISED JULY 2014 LM2937 500-mA Low Dropout Regulator 1 Features 3 Description The LM2937 is a positive voltage regulator capable of 1 • Fully Specified for Operation Over −40°C to 125°C supplying up to 500 mA of load current. The use of a • Output Current in Excess of 500 mA PNP power transistor provides a low dropout voltage • Output Trimmed for 5% Tolerance Under all characteristic. With a load current of 500 mA the Operating Conditions minimum input to output voltage differential required for the output to remain in regulation is typically 0.5 V • Typical Dropout Voltage of 0.5 V at Full Rated (1-V ensured maximum over the full operating Load Current temperature range). Special circuitry has been • Wide Output Capacitor ESR Range, up to 3 Ω incorporated to minimize the quiescent current to • Internal Short Circuit and Thermal Overload typically only 10 mA with a full 500-mA load current Protection when the input to output voltage differential is greater than 3 V. • Reverse Battery Protection The LM2937 requires an output bypass capacitor for • 60-V Input Transient Protection stability. As with most low dropout regulators, the • Mirror Image Insertion Protection ESR of this capacitor remains a critical design parameter, but the LM2937 includes special 2 Applications compensation circuitry that relaxes ESR • Automotive requirements. The device is stable for all ESR below 3 Ω. This allows the use of low ESR chip capacitors. • Industrial Control Ideally suited for automotive applications, the LM2937 • Point-of-Load regulation will protect itself and any load circuitry from reverse space battery connections, two-battery jumps, and up to 60- space V/ −50-V load dump transients. Familiar regulator space features such as short circuit and thermal shutdown protection are also built in. Simplified Schematic Device Information(1) PART PACKAGE BODY SIZE (NOM) NUMBER TO-220 (3) 14.986 mm x 10.66 mm LM2937 SOT (4) 6.50 mm x 3.5 mm TO-263 (3) 10.18 mm x 8.41 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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同様の説明 - LM2937ET-5.0 |
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