LP2951CJ National Semiconductor, LP2951CJ Datasheet - Page 13

• Manufacturer Part Number: LP2951CJ
• Description: Series of Adjustable Micropower Voltage Regulators
• Manufacturer: National Semiconductor

Typical Applications
Operation: Reg. # 1’s V
error flag becomes active when V
the error flag of Reg. # 2 becomes active and via Q1 latches the main
output off. When V
the early warning signal rises, unlatching Reg. # 2 via D3.
j
j
j
Early warning flag on low input voltage
Main output latches off at lower input voltages
Battery backup on auxiliary output
Regulator with Early Warning and Auxiliary Output
in
again exceeds 5.7V Reg. # 1 is back in regulation and
out
is programmed one diode drop above 5V. Its
in
5.7V. When V
(Continued)
in
drops below 5.3V,
DS008546-11
13
Latch Off When Error Flag Occurs
DS008546-12
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