ISL6527 Datasheet, PDF (14/16 Pages) Intersil Corporation – Single Synchronous Buck Pulse-Width Modulation PWM Controller

ISL6527, ISL6527A
3.3V
GND
TP1
4
CT1
C1
0.1µF
11
U1
VCC
OCSET/SD ⁶
C4
0.22µF
0.8V EXTERNAL REFERENCE
5
CT2
10
CPGND
3
CPVOUT
ISL6527,
ISL6527A
13
BOOT
1
GND
14
UGATE
12
PHASE
9
REF_IN
LGATE ²
COMP
FB
8
C10
7
33pF
R2
C11
6.49kΩ 5600pF
R5
Component Selection Notes:
C3, C8, C9 - Each 150mF, Panasonic EEF-UE0J151R or Equivalent.
D1 - 30mA Schottky Diode, MA732 or Equivalent
L1 - 1µH Inductor, Panasonic P/N ETQ-P6F1ROSFA or Equivalent.
Q1- Fairchild MOSFET; ITF86110DK8.
C2
1000pF
R1
TP3 _9.76kΩ
C5
D1
10µF
CERAMIC
C7 _0.1μF
C3
C6
1µF
L1
C8,9
Q1
R3
2.26kΩ
R4 C12
124Ω 8200pF
FIGURE 8. 3.3V TO 2.5V 5A DC/DC CONVERTER
2.5V @ 5A
GND
14
FN9056.10
November 18, 2008