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Low Voltage Power
DESCRIPTION
The SP6120B is a fixed frequency, voltage mode, synchronous PWM controller designed to
work from a single 5V or 3.3V input supply. Sipex's unique "AnyFET
TM"
Technology allows
the SP6120B to be used for resolving a multitude of price/performance trade-offs. It is
separated from the PWM controller market by being the first controller to offer precision,
speed, flexibility, protection and efficiency over a wide range of operating conditions.
NMOS High Side Drive
PROG = GND
NC
ENABLE
ENABLE
ISP
ISN
V
FB
COMP
RZ
15k
CP
100pF
CZ
4.7nF
C
SS
0.33碌F
SS
R
OSC
R
OSC
18.7k
廬
MBR0530
C
B
1碌F
QT
3.3V
V
IN
C
IN
330碌F x 2
CS
39nF
1.9V
1A to 8A
V
OUT
PMOS High Side Drive
PROG = V
CC
NC
ENABLE
ENABLE
ISP
ISN
廬
3.3V
V
IN
C
IN
330碌F x 2
QT1
RS
22.1k
L1
2.5碌H
CS
39nF
1.9V
1A to 8A
V
OUT
BST
GH
SWN
GND
C
BST
1碌F
BST
GH
SWN
GND
RS
22.1k
L1
2.5碌H
SP6120B
SP6120B
PGND
GL
V
CC
PROG
CV
CC
2.2碌F
RI
10k
V
IN
QB
DS
C
OUT
470碌F x 3
V
FB
COMP
RZ
15k
CP
100pF
CZ
4.7nF
C
SS
0.33碌F
SS
R
OSC
R
OSC
18.7k
PGND
GL
V
CC
PROG
CV
CC
2.2碌F
RI
10k
V
IN
QB
DS
C
OUT
470碌F x 3
RF
5.23k
RF
5.23k
QT, QB = FAIRCHILD FDS6690A
QT1 = FAIRCHILD FDS6375 (PMOS only)
L1 = PANASONIC ETQP6F2R5SFA
Date: 5/25/04
DS = STMICROELECTRONICS STPS2L25U
C
IN
= SANYO 6TPB330M
C
OUT
= SANYO 4TPB470M
漏 Copyright 2004 Sipex Corporation
SP6120B Low Voltage, AnyFET
TM
, Synchronous, Buck Controller
1