isl6236a Intersil Corporation, isl6236a Datasheet - Page 22

• Manufacturer Part Number: isl6236a
• Description: High-efficiency, Quad-output, Main Power Supply Controllers For Notebook Computers
• Manufacturer: Intersil Corporation

330µF
9mΩ
6.3V
C
C
11
1.5V/5A
OUT1
FIGURE 67. ISL6236A TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT WITHOUT CHARGE PUMP
FB1 TIED TO GND = 5V
FB1 TIED TO VCC = 1.5V
C
10µF
L
10
VIN: 5.5V to 25V
1
: 3.3µH
22
Q3b
Q3a
SI4816BDY
VCC
VCC
3.3V
ON
ON
0.1µF
C
VCC
VCC
9
OFF
OFF
OFF
1µF
R
200kΩ
C
L
L
C
C
3
FREQUENCY-DEPENDENT COMPONENTS
8
1
2
2
11
1.5V/1.05V SMPS
FREQUENCY
SWITCHING
PVCC
VIN
BOOT1
UGATE1
PHASE1
LGATE1
OUT1
EN1
BYP
FB1
AGND
ILIM1
SKIP#
EN LDO
SECFB
TON
5V
ISL6236A
ISL6236A
PAD
VCC
1µF
C
3.3µH
2.7µH
330µF
330µF
LDOREFIN
5
UGATE2
PHASE2
LGATE2
REFIN2
200kHz/300kHz
BOOT2
VREF3
PGND
OUT2
POK1
POK2
ILIM2
t
REF
LDO
EN2
ON
= VCC
200kΩ
R
5
0.22µF
C
VCC
4
0.01µF
0.1µF
C
C
VCC
VREF3
3
7
Q1a
Q1b
REFIN2: DYNAMIC 0 TO 2.5V
REFIN2 TIED TO VREF3 = 1.05V
REFIN2 TIED TO VCC = 3.3V
LDOREFIN TIED TO GND = 5V
LDOREFIN TIED TO VCC = 3.3V
L
SI4816BDY
2
VCC
: 2.2µF
C
C
10µF
10
1
200kΩ
R
4
LDO
1.05V/5A
OUT2
VCC
C
4.7µF
6
C
330µF
4mΩ
6.3V
200kΩ
F
R
2
6
June 28, 2007
FN6453.1