rt9645 Richtek Technology Corporation, rt9645 Datasheet - Page 2

• Manufacturer Part Number: rt9645
• Description: Channels Acpi Regulator
• Manufacturer: Richtek Technology Corporation

RT9645
Typical Application Circuit
www.richtek.com
2
V
CC
V
CC
5/V
V
5/V
GMCH
V
CC
GMCH
CC
12
12
PWM2-EN
FSB_VTT
VLDT_EN
PWM2-EN
FSB_VTT
VLDT_EN
5VSB
3VSB
V
3VSB
5VSB
CC3
V
S3
CC3
S3
Figure 1. RT9645 Typical Application for Intel Mode
Figure 2. RT9645 Typical Application for AMD K8
Q4
Q4
Q3
Q3
Q6
Q5
Q5
Q6
R
MOSFET
Richtek
OCSET2
Driver
MOSFET
R
Richtek
Driver
OCSET2
18
15
17
24
16
23
V
3
1
Preliminary
5
6
4
V
18
17
15
24
16
23
CC
CC
3
1
5
6
4
ISNS2
VTT_DRV
VTT_SEN
S3
PWM2
COMP2
FB2
SB3V_DRV
SB3V_SEN
SS2/EN2
VTT_EN
5
ISNS2
5
VTT_DRV
VTT_SEN
SS2/EN2
S3
PWM2
COMP2
FB2
SB3V_DRV
SB3V_SEN
VTT_EN
5VSB
5VSB V
2
RT9645
2
RT9645
V
CC
SB5V_DRV
VCC_DRV
CC
SB5V_DRV
11
12
VCC_DRV
COMP1
UGATE
12
11
PHASE
LGATE
BOOT
COMP1
UGATE
PHASE
LGATE
ISNS
GND
BOOT
FB1
ISNS
GND
S5
FB1
S5
7
10
8
9
12
19
13
14
21
20
22
7
10
8
9
12
19
13
14
21
20
22
R
R
OCSET1
OCSET1
Q1
V
S5
Q2
CC
Q1
Q2
5
5VDL
5VDL
S5
V
CC
DS9645-00 August 2007
5