LM3881MM National Semiconductor, LM3881MM Datasheet
LM3881MM
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LM3881MM Summary of contents
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... Time delays are defined using an external capac- itor and the output flag states can be inverted by the user. Typical Application Circuit © 2008 National Semiconductor Corporation Features ■ Easiest method to sequence rails ■ ...
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... Connection Diagram Ordering Information Order Number LM3881MM LM3881MMX Pin Descriptions Pin # www.national.com Top View MSOP-8 Package Package Type NSC Package Drawing MSOP-8 MUA08A Name VCC EN GND INV TADJ FLAG3 FLAG2 FLAG1 2 30048402 Supplied As 1000 Units on Tape and Reel 3500 Units on Tape and Reel ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VCC, EN, INV, TADJ, FLAG1, FLAG2, FLAG3 to GND Storage Temperature Range Junction Temperature Lead Temperature (Soldering, 5 sec.) Minimum ESD Rating (Note 2) Electrical Characteristics apply over the full Operating Temperature Range (T test, design or statistical correlation ...
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Typical Performance Characteristics Quiescent Current vs V Enable Threshold vs Temperature Time Delay vs Temperature ( Nominal) ADJ www.national.com V = 3.3V unless otherwise specified. CC Quiescent Current vs Temperature CC 30048414 30048416 30048418 4 30048415 Time ...
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FLAG Voltage vs Current 30048420 5 www.national.com ...
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Block Diagram www.national.com 6 30048403 ...
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Application Information OVERVIEW The LM3881 Power Sequencer provides a simple solution for sequencing multiple rails in a controlled manner. A clock sig- nal is established that facilitates control of the power up and power down of three open drain FET ...
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FIGURE 2. Power Up Sequence, INV Low FIGURE 3. Power Up Sequence, INV High 8 30048425 30048405 ...
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FIGURE 4. Power Down Sequence, INV Low FIGURE 5. Power Down Sequence, INV High 9 30048406 30048424 www.national.com ...
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ENABLE CIRCUIT The enable circuit is designed with an internal comparator, referenced to a bandgap voltage (1.22V), to provide a preci- sion threshold. This allows the timing to be set externally using a capacitor as shown in the diagram below. ...
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FIGURE 10. Incomplete Sequence Timing, INV Low 11 30048412 30048413 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted MSOP-8 Package NS Package Number MUA08A 12 ...
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Notes 13 www.national.com ...
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... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...