ISL8112 Intersil Corporation, ISL8112 Datasheet - Page 15

• Manufacturer Part Number: ISL8112
• Description: Main Power Supply Controllers
• Manufacturer: Intersil Corporation

330µF
330µF
9mO
9mO
6.3V
6.3V
C11
C11
C11
C11
Ω
2.5V/5A
2.5V/5A
C10
C10
10 µ F
10 µ F
R2
R2
43kO
43kO
VIN: 4.5V to 5.5V
VIN: 4.5V to 5.5V
SI4816BDY
SI4816BDY
R1
R1
110kO
110kO
L2: 1.5µH
L2: 1.5µH
F
F
Ω
Ω
FB1 tied to GND=5V
FB1 tied to GND=5V
FB1 tied to VCC=1.5V
FB1 tied to VCC=1.5V
FB1 tied to VCC=1.5V
FIGURE 19. ISL8112 TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT
15
Q3b
Q3b
Q3a
Q3a
GND
GND
VCC
VCC
GND
GND
VCC
VCC
0.1µF
0.1µF
C9
C9
VCC
VCC
R3
R3
200k
200k
1µF
1µF
C8
C8
L1
L2
C2
C11
FREQUENCY-DEPENDENT COMPONENTS
Ω
Ω
1.2V/2.5V SMPS
FREQUENCY
SWITCHING
EN_LDO
EN_LDO
VSEN1
VSEN1
EN1
EN1
BYP
BYP
AGND
AGND
NC
NC
FS
FS
VIN
VIN
BOOT1
BOOT1
PH1
PH1
LG1
LG1
FB1
FB1
MODE
MODE
UG1
UG1
ILIM 1
ILIM 1
PVCC
PVCC
1O
1O
R7
R7
Ω
ISL8112
ISL8112
ISL8112
VCC
VCC
PAD
PAD
1 µ
1 µ
C5
C5
F
F
1.5µH
1.5µH
3X330µF
330µF
OUT2REF
OUT2REF
PGOOD1
PGOOD1
PGOOD2
PGOOD2
LDOREF
LDOREF
LDOREF
400kHz/500kHz
VSEN2
VSEN2
VREF2
VREF2
VREF1
VREF1
BOOT2
BOOT2
PGND
PGND
ILIM2
ILIM2
FS = GND
LDO
LDO
UG2
UG2
PH2
PH2
LG2
LG2
EN2
EN2
OUT2REF: DYNAMIC 0 TO 2.5V
OUT2REF: DYNAMIC 0 TO 2.5V
OUT2REF tied to VREF3=1.05V
OUT2REF tied to VREF3=1.05V
OUT2REF tied to VCC=3.3V
OUT2REF tied to VCC=3.3V
225kO
225kO
R5
R5
Ω
GND
GND
C4
C4
0.22µF
0.22µF
NC
NC
OPEN
OPEN
0.1µF
0.1µF
C3
C3
C7
C7
VCC
VCC
VREF2
Q2
Q2
IRF7832
IRF7832
Q1
Q1
IRF7821
IRF7821
L1: 1.5µH
L1: 1.5µH
110kO
110kO
R9
R9
C1
C1
C1
C1
10 µ F
10 µ F
10 µ F
10 µ F
VCC
VCC
225kO
225kO
Ω
R4
R4
VREF1
REF
REF
73kO
73kO
R8
R8
Ω
Ω
1.2V/15A
1.2V/15A
C2
C2
C2
C2
3 x 330µF
3 x 330µF
4mO
4mO
6.3V
6.3V
VCC
VCC
225kO
225kO
R6
R6
Ω
November 21, 2006
Ω
FN6396.0