lm26484sqx National Semiconductor Corporation, lm26484sqx Datasheet - Page 9

• Manufacturer Part Number: lm26484sqx
• Description: Power Management Unit
• Manufacturer: National Semiconductor Corporation

Flexible Power Sequencing of
Multiple Power Supplies
The two bucks and the LDO in the LM26484 can be individ-
ually controlled with ENSW1, ENSW2, and ENLDO, respec-
tively. All the enable inputs need to be either grounded or tied
to V
IH
.
Efficiency of Buck1, V
Efficiency of Buck1, V
OUT
OUT
= 1.8V, at Room Temp
= 3.5V at Room Temp
FIGURE 2. Power-On Reset Waveform
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Power-On Reset
The LM26484 provides an active low reset output nPOR.
Typical waveform is as shown in Figure 2 below:
Efficiency of Buck2, V
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OUT
= 1.0V, at Room Temp
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