ISL6520B Datasheet, PDF (2/10 Pages) Intersil Corporation – Single Synchronous Buck Pulse-Width Modulation PWM Controller

Pinouts
ISL6520B
(8 LD SOIC)
TOP VIEW
BOOT 1
UGATE 2
GND 3
LGATE 4
8 PHASE
7 COMP/SD
6 FB
5 VCC
ISL6520B
ISL6520B
(16 LD QFN)
TOP VIEW
16 15 14 13
BOOT ₁
UGATE ₂
GND 3
12 NC
11 COMP/SD
10 NC
NC ⁴
9 FB
5678
Block Diagram
VCC
POR AND
SOFTSTART
BOOT
UGATE
+
0.8V
-
FB
COMP/SD
20μA
ERROR
AMP
+
-
PWM
COMPARATOR
+
-
GATE
CONTROL
PWM ^LOGIC VCC
OSCILLATOR
FIXED 300kHz
Typical Application
SHUTDOWN
GND
5V
R_PULLUP
R_F
C_F
R_OFFSET
C_DCPL
D_BOOT
VCC
5
1
COMP/SD
7
2
ISL6520B
8
BOOT
C_BOOT
UGATE
PHASE
C_I
63
4 ^LGATE
FB
GND
V_IN
C_HF
C_BULK
Q_U
L_OUT
Q_{L COUT}
V_OUT
R_S
2
PHASE
LGATE
FN9083.3
July 23, 2007