ISL6520 Datasheet, PDF (2/11 Pages) Intersil Corporation – Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Pinouts
SOIC
TOP VIEW
BOOT 1
UGATE 2
GND 3
LGATE 4
8 PHASE
7 COMP/SD
6 FB
5 VCC
ISL6520
QFN
TOP VIEW
16 15 14 13
BOOT 1
12 NC
UGATE 2
GND 3
GND
11 COMP/OCSET
10 NC
NC 4
9 FB
5678
Block Diagram
SAMPLE
AND
HOLD
+
-
OC
COMPARATOR
VCC
POR AND
SOFTSTART
+
0.8V
-
FB
COMP/OCSET
20µA
Typical Application
ERROR
AMP
+
-
PWM
COMPARATOR
+
-
GATE
CONTROL
PWM ^LOGIC
VCC
OSCILLATOR
FIXED 300kHz
V_CC
GND
BOOT
UGATE
PHASE
LGATE
C_DCPL
C_BULK
R_OCSET
R_F
C_F
VCC
5
BOOT
1
ISL6520
COMP/OCSET
7
UGATE
2
PHASE
8
C_I
63
4 ^LGATE
FB
GND
D_BOOT
C_HF
C_BOOT
L_OUT
C_OUT
+V_O
R_OFFSET
R_S
2
FN9009.4
October 4, 2005