LP2951CMMX-3.3 National Semiconductor, LP2951CMMX-3.3 Datasheet - Page 17

• Manufacturer Part Number: LP2951CMMX-3.3
• Manufacturer: National Semiconductor

Specifications of LP2951CMMX-3.3

• Voltage Regulator Type: Linear
• Topology: LDO
• Regulator Output Type: Fixed
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (max): 30V
• Output Voltage: 3.3V
• Package Type: MSOP
• Output Current: 100mA
• Load Regulation: 0.2%
• Line Regulation: 0.2%
• Output Voltage Accuracy: ±0.5%
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

■
■
■
■
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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