LM2941QML

LM2941QML, LM2941QML-SP www.ti.com SNVS390B – AUGUST 2009 – REVISED APRIL 2013 LM2941QML 1A Low Dropout Adjustable Regulator Check for Samples: LM2941QML, LM2941QML-SP FEATURES 1 2 Available with Radiation Ensure – ELDRS Free 100 krad(Si) Output Voltage Adjustable from 5V to 20V Dropout Voltage Typically 0.5V at IO = 1A Output Current in Excess of 1A Trimmed Reference Voltage Reverse Battery Protection Internal Short Circuit Current Limit Mirror Image Insertion Protection TTL, CMOS Compatible ON/OFF Switch DESCRIPTION The LM2941 positive voltage regulator features the ability to source 1A of output current with a typical dropout voltage of 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VI − VO ≤ 3V). Originally designed for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal ci...