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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 (Vin - Vout < 3V).
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 the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.
6410 Maximum Ratings
Input Voltage (Survival Voltage < 100mS) 60V Internal Power Dissipation (Note 2) Internally Limited Maximum Junction Temperature 150 C Storage Temperature Range -65 C < Tj < +150 C Lead Temperature (Soldering, 10 seconds) 300 C ESD Susceptibility (Note 3) 500V Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Operating ratings indicate conditions for which the device is intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specificatinos and test conditions, see the Electrical Characteristics.
Note 2: The maximum power dissipation is a function of Tj(max), ThetaJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD=(Tj(max)-TA)/ThetaJA. If this dissipation is exceeded, the die temperature will rise above 150 C and the LM2941 will go into thermal shutdown. ThetaJA is 35 C/W and ThetaJC is 4 C/W.
Note 3: Human body model, 100pF discharged through 1.5K Ohms
6410 Features
- Output voltage adjustable from 5V to 20V - Dropout voltage typically 0.5V @ 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