LM2941

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2941, LM2941C SNVS770I – JUNE 1999 – REVISED JANUARY 2015 LM2941x 1-A Low Dropout Adjustable Regulator 1 Features 1 Operating VIN Range: 6 V to 26 V Output Voltage Adjustable From 5 V to 20 V Dropout Voltage Typically 0.5 V at IOUT = 1 A Output Current in Excess of 1 A Trimmed Reference Voltage Reverse Battery Protection Internal Short-Circuit Current Limit Mirror Image Insertion Protection P+ Product Enhancement Tested TTL, CMOS Compatible ON/OFF Switch WSON Space-Saving Package 2 Applications Industrial Automotive 3 Description The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 0.5 V and a maximum of 1 V 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 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V). Designed also 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 t...