Production£º

¡¾Part No.¡¿     LM2940CSX5.0
¡¾Category¡¿  1A Low Dropout Regulator
¡¾Packing¡¿    To-263
¡¾MFQ¡¿           NS
¡¾Datasheet¡¿LM2940CSX5.0 datasheet

General Description

The LM2940/LM2940C positive voltage regulator features
the ability to source 1A of output current with a dropout
voltage of typically 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 current when the differential between the input volt-
age 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 30 mA. Higher
quiescent currents only exist when the regulator is in the
dropout mode (VIN −VOUT ¡Ü 3V).
Designed also for vehicular applications, the LM2940/
LM2940C and all regulated circuitry are protected from re-
verse battery installations or 2-battery jumps. During line
transients, such as load dump when the input voltage can
momentarily exceed the specified maximum operating volt-
age, the regulator will automatically shut down to protect
both the internal circuits and the load. The LM2940/
LM2940C cannot be harmed by temporary mirror-image in-
sertion. Familiar regulator features such as short circuit and
thermal overload protection are also provided.

Features

• Dropout voltage typically 0.5V @IO =1A
• Output current in excess of 1A
• Output voltage trimmed before assembly
• Reverse battery protection
• Internal short circuit current limit
• Mirror image insertion protection
• P+ Product Enhancement tested

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