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LM2940QML Datasheet Preview

LM2940QML Datasheet

1A Low Dropout Regulator

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LM2940QML, LM2940QML-SP
www.ti.com
SNVS389B – MAY 2010 – REVISED MAY 2013
LM2940QML 1A Low Dropout Regulator
Check for Samples: LM2940QML, LM2940QML-SP
FEATURES
1
2 Available with Radiation Ensure
– ELDRS Free 100 krad(Si)
• 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
DESCRIPTION
The LM2940 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 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 30 mA. Higher
quiescent currents only exist when the regulator is in
the dropout mode (VIN VOUT 3V).
Designed also for vehicular applications, the LM2940
and all regulated circuitry are protected from reverse
battery installations or 2-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.
The LM2940 cannot be harmed by temporary mirror-
image insertion. Familiar regulator features such as
short circuit and thermal overload protection are also
provided.
CONNECTION DIAGRAMS
Figure 1. 16-Lead Ceramic Surface-Mount Package (CFP) Top View
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated




etcTI

LM2940QML Datasheet Preview

LM2940QML Datasheet

1A Low Dropout Regulator

No Preview Available !

LM2940QML, LM2940QML-SP
SNVS389B – MAY 2010 – REVISED MAY 2013
Equivalent Schematic Diagram
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
Submit Documentation Feedback
Copyright © 2010–2013, Texas Instruments Incorporated
Product Folder Links: LM2940QML LM2940QML-SP


Part Number LM2940QML
Description 1A Low Dropout Regulator
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