Rev 1.2 October 2008
EN5335QI
TEST CONDITIONS
Threshold voltage for Logic Low
Threshold voltage for Logic High
(internally pulled high; can be left
floating to achieve logic high)
(V
IN
= 5.5V)
VSx = GND
VSx = V
IN
VSx = Open
I
POK
= 4mA (sink current)
1.8
PARAMETER
SYMBOL
Voltage Select Operation
VS
X
Logic Low
Threshold
VS
X
Logic High
Threshold
V
SX-Low
V
SX-High
MIN
TYP
MAX
0.8
V
IN
UNITS
V
V
VS
X
Pin Current
I
VSX
50
0
0
0.4
V
IN
µA
Power OK Operation
POK low voltage
Max POK Voltage
V
POK
V
POK
V
V
Typical Performance Characteristics
V
IN
=5.0V
95
90
85
V
IN
=3.3V
V
OUT
= 3.3V
V
OUT
= 2.5V
95
90
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
V
OUT
= 0.8V
85
80
75
70
65
60
55
50
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
Lo a d C urre nt ( A )
80
75
70
65
60
55
50
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
2.9
Lo a d C urre nt ( A )
Efficiency versus Load, V
IN
= 5.0V
Efficiency versus Load, V
IN
= 3.3V
Load transient, 0 – 3A, V
IN
/V
OUT
= 5.5V/1.2V
Load transient, 0 – 3A, V
IN
/V
OUT
= 5.5V/3.3V
Efficiency (%)
Efficiency (%)
Enpirion
2008 all rights reserved, E&OE
6
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