EP5357LUI/EP5357HUI
PARAMETER
LLM Engage Headroom
LLM Pin Logic Low
LLM Pin Logic High
LLM Pin Current
Operating Frequency
Soft Start Operation
Soft Start Slew Rate
V
OUT
Rise Time
ΔV
SS
T
RISE
EP5357HUI (VID MODE)
EP5357LUI (VID MODE)
Time to 90% V
OUT
(VFB MODE)
180
8
4
250
V/mS
uSec
V
LLMLO
V
LLMHI
I
LLM
F
OSC
1.4
<100
5
SYMBOL
TEST CONDITIONS
Minimum V
IN
-V
OUT
to ensure
proper LLM operation
MIN
600
TYP
MAX
UNITS
mV
0.3
V
V
nA
MHz
Note 1:
Parameter guaranteed by design
Typical Performance Characteristics
95
90
85
80
75
70
65
60
55
50
45
10
LLM
PWM
95
90
85
80
75
70
65
60
55
50
45
10
LLM
Efficiency (%)
Efficiency (%)
PWM
100
Load Current (mA)
1000
100
Load Current (mA)
1000
Efficiency vs. Load Current: V
IN
= 5.0V, V
OUT
(from
top to bottom) = 3.3, 2.5, 1.8, 1.2V
95
90
85
80
75
70
65
60
55
50
45
10
LLM
Efficiency vs. Load Current: V
IN
= 3.7V, V
OUT
(from
top to bottom) = 2.5, 1.8, 1.2V
Efficiency (%)
PWM
100
Load Current (mA)
1000
Efficiency vs. Load Current: V
IN
= 3.3V, V
OUT
(from
top to bottom) = 2.5, 1.8, 1.2V
©Enpirion
2012 all rights reserved, E&OE
03409
5
September 12, 2012
www.enpirion.com
Rev:
D
ENPIRION [ ENPIRION, INC. ]
