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LM2940

Features: Dropout voltage typically 0.5V @IO=1AOutput current in excess of 1AOutput voltage trimmed before assemblyReverse battery protectionInternal short circuit current limitMirror image insertion protectionP+ Product Enhancement testedPinoutSpecifications Output Current 1000 mA Output...

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SeekIC No. : 004395157 Detail

LM2940: Features: Dropout voltage typically 0.5V @IO=1AOutput current in excess of 1AOutput voltage trimmed before assemblyReverse battery protectionInternal short circuit current limitMirror image insertio...

LM2940 Data Sheet

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Part Number:
LM2940
Supply Ability:
5000

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  • 1~5000
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  • Processing time
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Product Details

Description



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






Pinout

Connection Diagram Connection Diagram




Specifications

Output Current 1000 mA
Output Min 8, 9, 10, 12, 15, 5 Volt
Input Min Voltage Undefined Volt
Input Max Voltage 26 Volt
Dropout Voltage 0.5 Volt
Adjustable Output No
Quiescent Current 10 mA
On/Off Pin No
Error Flag No
RegType LDO
Temperature Min -40, -55 deg C
Temperature Max 85, 125 deg C
Output Max 8, 9, 10, 12, 15, 5 Volt
Output Voltage 8, 9, 10, 12, 15, 5 Volt
AEC Q-100 Automotive Grade 0
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LM2940S, T, MP100ms 60V
LM2940CS, T1ms 45V
Internal Power Dissipation
(Note2) InternallyLimited
Maximum Junction Temperature 150˚C
Storage Temperature Range−65˚CTJ+150˚C
Lead Temperature,Time for Wave Soldering
TO-220 (T) Package 260˚C,10s
TO-263 (S) Package 260˚C,4s
SOT-223 (MP) Package 260˚C,4s
ESD Susceptibility (Note3)2kV
Operating Conditions (Note1)
Input Voltage 26V
Temperature Range
LM2940T, LM2940S −40˚CTJ125˚C
LM2940CT, LM2940CS 0˚CTJ125˚C
LM2940IMP −40˚CTJ85˚C
LM2940J, LM2940WG −55˚CTJ125˚C
LM2940LD−40˚CTJ125˚C




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 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/LM2940C 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/LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2940IMP-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMP-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMP-15 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMP-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMP-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMP-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-15 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940IMPX-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-15 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940LD-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940LDX-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940LDX-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940LDX-15 SLM 0 42786 0 0 3352500 2 951281028
LM2940LDX-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940LDX-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940S-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940S-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940S-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940S-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940S-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940SX-10 SLM 0 42786 0 0 3352500 2 951281028
LM2940SX-12 SLM 0 42786 0 0 3352500 2 951281028
LM2940SX-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940SX-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940SX-9.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940T-10.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940T-12.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940T-5.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940T-8.0 SLM 0 42786 0 0 3352500 2 951281028
LM2940T-9.0 SLM 0 42786 0 0 3352500 2 951281028

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


More Application Notes

Title Size in Kbytes Date
AN-1378: Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators 647 Kbytes 15-Jul-05 Download
AN-1378 (Chinese): Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators
 383 Kbytes 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">

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