lm26484sqx National Semiconductor Corporation, lm26484sqx Datasheet - Page 9
lm26484sqx
Manufacturer Part Number
lm26484sqx
Description
Power Management Unit
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM26484SQX.pdf
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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
30066137
30066115
9
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
30066103
OUT
= 1.0V, at Room Temp
30066138
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