ISL6402 Datasheet, PDF (4/19 Pages) Intersil Corporation – 300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

Typical Application Schematic
ISL6402
+ _C1
+12V
D1
C2
C7
VOUT1
+1.2V
R1
L1
+ _C9
R2
SD1
C4
VIN
SS1
21
13
C3
BOOT1
27
Q1A
UGATE1 ₂₆
VCC_5V
7
SS2
9
C5
BOOT2
2
Q1A
3 ^UGATE2
PHASE1 ₂₅
4 ^PHASE2
R3 _{ISEN1 24}
5 ^{ISEN2 R4}
Q1B
LGATE1 ₂₈
PGND ₂₃
ISL6402
(See Note)
Q2B
1 ^LGATE2
11 ^FB2
FB1 ₁₈
22
SD2 ₈
SGND
12
17 ^SGND
16 ^GATE3
FB3
15
OCSET1
19
R7
20 14
OCSET2
10
6
R10
SGND
SYNC PGOOD
R8
R9
VCC_5V
D2
C6
C8
L2
C10 ⁺
VOUT2
+3.3V
R5
R6
C11
VOUT2
+3.3V
R11
R12
Q3
VOUT3
+2.5V
+ _C12
R13
NOTE: Pin numbers correspond to the TSSOP pinout.
4
FN9123.3
November 8, 2004