(Hong Kong)
Product Summary
The LM3881MM Power Sequencer offers the easiest method to control power up and power down of multiple power supplies(switching or linear regulators). By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system. Upon enabling the LM3881MM, the three output flags will sequentially release, after individual time delays, permitting the connected power supplies to startup. The output flags will follow a reverse sequence during power down to avoid latch conditions. The applications of the LM3881MM are: Multiple Supply Sequencing, Microprocessor/Microcontroller Sequencing, FPGA Sequencing.
Parametrics
LM3881MM absolute maximum ratings: (1)VCC, EN, INV, TADJ, FLAG1, FLAG2, FLAG3 to GND: -0.3V to +6.0V; (2)Storage Temperature Range: -65℃ to +150℃; (3)Junction Temperature: 150℃; (4)Lead Temperature (Soldering, 5 sec.): 260℃; (5)Minimum ESD Rating (Note 2): 2 kV.
Features
LM3881MM features: (1)Easiest method to sequence rails; (2)Power up and power down control; (3)Input voltage range of 2.7V to 5.5V; (4)Small footprint MSOP-8 package; (5)Low quiescent current of 80 μA; (6)Output invert feature; (7)Timing controlled by small value external capacitor.
Diagrams
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Pricing (USD) |
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 LM3881MM/NOPB |
National Semiconductor (TI) |
Supervisory Circuits POWER SEQUENCER |
Data Sheet |
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LM3881MME/NOPB |
National Semiconductor (TI) |
Supervisory Circuits |
Data Sheet |
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LM3881MMX/NOPB |
National Semiconductor (TI) |
Supervisory Circuits |
Data Sheet |
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