he LM2937 Voltage Regulatorand LM2937-3.3 are positive voltage regulators capable of supplying up to 500 mA of load current.T Both regulators are ideal for converting a common 5V logic supply, or higher input supply voltage, to the lower 2.5V and 3.3V supplies to power VLS ASIC’s and microcontrollers. Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500 mA load current when the input to output voltage differential is greater than 5V.ally only 10mA with a full 500mA load current when the input to output voltage differential is greater than 3V.The UTC LM2937 requires an output bypass capacitor for stability. As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The UTC LM2937 is stable for all ESR below 3Ω.This allows the use of low ESR chip capacitors.Ideally suited for automotive applications, the UTC LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps and up t
Features of LM2937 Voltage Regulator
Operating Input Voltage Range : 4.75 V to 26 V
Fully Specified for Operation Over −40°C to 125°C
Output Current in Excess of 500 mA (400 mA for SOT-223 package)
Output Trimmed for 5% Tolerance Under All Operating Conditions
Wide Output Capacitor ESR Range, 0.01 Ω up to 5 Ω
Internal Short Circuit and Thermal Overload than Protection
Reverse Battery Input Protection
60-V Input Transient Protection
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