ISL62871 Datasheet, PDF (4/25 Pages) Intersil Corporation – PWM DC/DC Controller With VID Inputs For Portable GPU Core-Voltage Regulator

Application Schematics
R_VCC
+5V
GPIO
C_PVCC
PGND
2
GND
3
EN
4
VID1
5
VID0
6
SREF
7
SET0
8
SET1
9
R_SET1 R_SET2 R_SET3
ISL62871, ISL62872
VCC
19
BOOT
18
UGATE
17
PHASE
16
NC
15
OCSET
14
VO
13
FB
12
VCC
C_VCC
C_BOOT
Q_HS
Q_LS
L_O
C_OCSET
R_COMP
R_O
C_COMP
V_IN
3.3V TO 25V
CIN_C
CIN_B
V_OUT
0.5V TO 3.3V
CO_C
CO_B
GPIO
R_FB
FIGURE 2. ISL62872 APPLICATION SCHEMATIC WITH FOUR OUTPUT VOLTAGE SETPOINTS AND DCR CURRENT SENSE
+5V
GPIO
R_VCC
C_PVCC
PGND
2
GND
3
EN
4
VID1
5
VID0
6
SREF
7
SET0
8
SET1
9
R_SET1 R_SET2 R_SET3
VCC
19
BOOT
18
UGATE
17
PHASE
16
NC
15
OCSET
14
VO
13
FB
12
VCC
C_VCC
C_BOOT
Q_HS
L_O
Q_LS
V_IN
3.3V TO 25V
CIN_C
CIN_B
R_SNS
C_OCSET
V_OUT
0.5V TO 3.3V
CO_C
CO_B
R_COMP
R_O
C_COMP
GPIO
R_FB
FIGURE 3. ISL62872 APPLICATION SCHEMATIC WITH FOUR OUTPUT VOLTAGE SETPOINTS AND RESISTOR CURRENT SENSE
4
FN6707.0
August 14, 2008