isl6237 Intersil Corporation, isl6237 Datasheet - Page 4

• Manufacturer Part Number: isl6237
• Description: High-efficiency, Quad-output, Main Power Supply Controllers For Notebook Computers
• Manufacturer: Intersil Corporation

Electrical Specifications
Current-Limit Threshold
(Positive, Adjustable)
Zero-Current Threshold
Current-Limit Threshold (Negative, Default)
Soft-Start Ramp Time
Operating Frequency
On-Time Pulse Width
Minimum Off-Time
Maximum Duty Cycle
Ultrasonic SKIP Operating Frequency
INTERNAL REGULATOR AND REFERENCE
LDO Output Voltage
LDO Output Voltage
LDO Output in Adjustable Mode
LDO Output Accuracy in Adjustable Mode
LDOREFIN Input Range
LDO Output Current
LDO Output Current During Switchover
LDO Output Current During Switchover to
3.3V
LDO Short-Circuit Current
PARAMETER
4
No load on LDO, OUT1, OUT2, and REF, V
V
EN_LDO
= 5V, T
GND - PHASE_
SKIP# = GND, REF, or OPEN, GND - PHASE_
SKIP# = VCC, GND - PHASE_
Zero to full limit
V
(400kHz/300kHz)
V
SKIP# = REF or OPEN
BYP = GND, 5.5V < V
0 < ILDO < 100mA
BYP = GND, 5.5V < V
0 < ILDO < 100mA
V
V
V
V
BYP = GND, V
BYP = 5V, V
BYP = 3.3V, V
LDO = GND, BYP = GND
(V
(V
SKIP# = VCC
(V
V
V
V
V
tON
tON
IN
IN
IN
LDO
tON
tON
tON
tON
tON
tON
tON
= 5.5V to 25V, V
= 5.5V to 25V, V
= 5.5V to 25V, V
A
= REF or OPEN
= VCC (200kHz/300kHz)
= GND (400kHz/500kHz)
= GND
= REF or OPEN
= VCC
= 2 x V
= GND), SKIP# = VCC
= REF or OPEN),
= VCC), SKIP# = VCC
= -40° C to +100° C, unless otherwise noted. Typical values are at T
IN
LDOREFIN
IN
IN
= 5.5V to 25V, LDOREFIN < 0.3V
= 5.5V to 25V, LDOREFIN > (VCC - 1V)
= 5.5V to 25V, Guaranteed by design
ISL6237
LDO
LDOREFIN
LDOREFIN
CONDITIONS
IN
IN
< 25V, LDOREFIN > (VCC - 1V),
< 25V, LDOREFIN < 0.3V,
= 2 x V
= 0.35V to 0.5V
= 0.5V to 2.25V
IN
LDOREFIN
= 12V, EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V,
V
V
V
SMPS 1
SMPS 2
SMPS 1
SMPS 2
SMPS 1
SMPS 2
V
V
V
V
V
V
V
V
V
V
V
V
ILIM_
ILIM_
ILIM_
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
= 1V
= 0.5V
= 2V
= 5.00V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
0.895
0.475
0.895
0.833
1.895
0.833
4.925
3.250
0.35
MIN
185
200
0.7
40
93
25
1.052
0.555
1.052
0.925
2.105
0.925
5.000
3.300
TYP
-120
100
200
400
500
400
300
200
300
300
200
1.7
50
88
85
88
91
94
91
37
3
A
= +25°C. (Continued)
5.075
1.209
0.635
1.209
1.017
2.315
1.017
3.350
MAX
±2.5
±1.5
2.25
107
215
400
100
200
100
400
4.5
60
March 16, 2007
FN6418.1
UNITS
kHz
kHz
kHz
kHz
kHz
kHz
kHz
mV
mV
mV
mV
mV
mA
mA
mA
mA
ms
µs
µs
µs
µs
µs
µs
ns
%
%
%
%
%
%
%
%
V
V
V
V