LP2951CMM-3.3/NOPB National Semiconductor, LP2951CMM-3.3/NOPB Datasheet - Page 17

• Manufacturer Part Number: LP2951CMM-3.3/NOPB
• Description: IC VREG 3.3V MICRPWR 8-MSOP
• Manufacturer: National Semiconductor
• Type: Linearr

Specifications of LP2951CMM-3.3/NOPB

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 30V
• Voltage - Dropout (typical): 0.38V @ 100mA
• Number Of Regulators: 1
• Current - Output: 100mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Package: 8MSOP
• Function: LDO
• Number Of Outputs: 1
• Output Voltage: 3.3 V
• Maximum Output Current: 0.1 A
• Output Type: Fixed
• Accuracy: ±0.5(Typ) %
• Typical Dropout Voltage @ Current: 0.05@100uA|0.38@100mA V
• Polarity: Positive
• Reference Voltage: 1.26 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Other names: LP2951CMM-3.3; LP2951CMM-3.3TR

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flag becomes active when V
of Reg. #2 becomes active and via Q1 latches the main output off. When V
exceeds 5.7V Reg. #1 is back in regulation and the early warning signal rises,
unlatching Reg. #2 via D3.
For 5V
Early warning flag on low input voltage
Main output latches off at lower input voltages
Battery backup on auxiliary output
Operation: Reg. #1's V
Regulator with Early Warning and Auxiliary Output
out
, use internal resistors. Wire pin 6 to 7, & wire pin 2 to +V
out
in
is programmed one diode drop above 5V. Its error
≤
5.7V. When V
in
drops below 5.3V, the error flag
2 Ampere Low Dropout Regulator
854611
out
Bus.
in
again
17
Latch Off When Error Flag Occurs
854613
854612
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