EN6347QI3 ENPIRION [Enpirion, Inc.], EN6347QI3 Datasheet - Page 5

• Manufacturer Part Number: EN6347QI3
• Description: 4A Voltage Mode Synchronous Buck PWM DC-DC Converter with Integrated Inductor
• Manufacturer: ENPIRION [Enpirion, Inc.]

PARAMETER
POK Output low Voltage
POK Output Hi Voltage
POK pin V
current (Note 1)
LLM Engage Headroom
LLM Logic Low
(LLM/SYNC PIN)
LLM Logic High
(LLM/SYNC PIN)
LLM/SYNC Pin Current
Note 1: Parameter guaranteed by design.
Note 2: LLM operation is normally only guaranteed above the minimum specified output current. Contact Enpirion
Note 3: For proper operation of the synchronization circuit, the high-level amplitude of the SYNC signal should not be
Typical Performance Characteristics
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PWM Output Ripple: V
Efficiency V
05991
C
100
Applications support for designs that need to operate at a lower I
above 2.5V.
95
90
85
80
75
70
65
60
55
50
45
40
35
30
IN
0.01
20 MHz BW limit
= 22PF, C
OH
leakage
PWM/LLM Efficiency vs. Load Performance at Vin=3.3V
IN
= 3.3V, V
2.5, 1.8, 1.2, 1.0V
OUT
0.1
= 47PF/1206 + 10uF/0805
IN
Load (A)
= 3.3V, V
OUT
V
V
I
V
V
SYMBOL
POKL
(From top to bottom) =
POKL
POKH
LLM_LO
LLM_HI
1
OUT
= 1.0V, I
10
With 4mA current sink into POK
2.5V ” V
POK high
Minimum V
LLM operation
LLM Static Logic Level
LLM Static Logic Level
LLM/SYNC Pin is <2.5V
OUT
TEST CONDITIONS
Vout=2.5
Vout=1.8
Vout=1.2
Vout=1
Vout=1
Vout=1.2
Vout=1.8
Vout=2.5
#REF!
= 4A
IN
” 6.6V
IN
-V
OUT
10/04/2011
to ensure proper
5
PWM Output Ripple: V
Efficiency V
C
OUT
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
IN
0.01
500 MHz BW
= 22PF, C
.
IN
PWM/LLM Efficiency vs. Load Performance at Vin=5V
= 5.0V, V
3.3, 2.5, 1.8, 1.2, 1.0V
MIN
1.5
OUT
0.1
= 47PF/1206 + 10uF/0805
IN
Load (A)
= 3.3V, V
OUT
TYP
<100
800
(From top to bottom) =
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1
OUT
MAX
= 1.0V, I
0.4
0.3
V
1
IN
EN6347QI
10
OUT
UNITS
mV
µA
nA
Vout=3.3
Vout=2.5
Vout=1.8
Vout=1.2
Vout=1
Vout=1
Vout=1.2
Vout=1.8
Vout=2.5
Vout=3.3
V
V
V
V
= 4A
Rev: B