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SP6120
Low Voltage, AnyFET TM , Synchronous,Buck Controller
Ideal for 2A to 10A, High Performance, DC-DC Power Converters
FEATURES
■ Optimized for Single Supply, 3V - 5.5V Applications
■ High Efficiency: Greater Than 95% Possible
■ "AnyFET TM" Technology: Capable Of Switching Either
PFET Or NFET High Side Switch
■ Selectable Discontinuous or Continuous Conduction
Mode For Use In Battery Or Bus Applications
■ Fast Transient Response
■ 16-Pin TSSOP, Small Size
N/C 1
ENABLE 2
ISP 3
ISN 4
V FB 5
COMP 6
SS 7
R OSC 8
SP6120
16 Pin TSSOP
16 BST
15 GH
14 SWN
13 GND
12 PGND
11 GL
10 V CC
9 PROG
APPLICATIONS
■ DSP
■ Low Quiescent Current: 950 μ A, 10 μ A in Shutdown
■ Accurate 1% Reference Over Line, Load and Temperature Now Available in Lead Free Packaging
■ Accurate 10% Frequency
■ Accurate, Rail to Rail, 43mV, Over-Current Sensing
■ Resistor Programmable Frequency
■ Microprocessor Core
■ Resistor Programmable Output Voltage
■ I/O & Logic
■ Capacitor Programmable Soft Start
■ Industrial Control
■ Distributed Power
■ Hiccup Over-Current Protection
■ Low Voltage Power
DESCRIPTION
The SP6120 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 SP6120
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.
TYPICAL APPLICATIONS CIRCUIT
NMOS High Side Drive
PROG = GND
MBR0530
3.3V
V IN
PMOS High Side Drive
PROG = V CC
3.3V
V IN
NC
?
BST
C BST
1 μ F
C IN
330 μ F x 2
NC
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BST
C IN
330 μ F x 2
ENABLE
ENABLE
GH
QT
RS
CS
ENABLE
ENABLE
GH
QT1
RS
CS
ISP
SP6120
SWN
22.1k
L1
39nF
1.9V
1A to 8A
ISP
SP6120
SWN
22.1k
L1
39nF
1.9V
1A to 8A
ISN
GND
2.5 μ H
V OUT
ISN
GND
2.5 μ H
V OUT
V FB
PGND
V FB
PGND
RZ
15k
COMP
SS
GL
V CC
V IN
QB
DS
RF
5.23k
C OUT
470 μ F x 3
RZ
15k
COMP
SS
GL
V CC
V IN
QB
DS
RF
5.23k
C OUT
470 μ F x 3
CP
100pF
CZ
4.7nF
C SS
0.33 μ F
R OSC
R OSC
18.7k
PROG
CV CC
2.2 μ F
RI
10k
CP
100pF
CZ
4.7nF
C SS
0.33 μ F
R OSC
R OSC
18.7k
PROG
CV CC
2.2 μ F
RI
10k
QT, QB = FAIRCHILD FDS6690A
QT1 = FAIRCHILD FDS6375 (PMOS only)
L1 = PANASONIC ETQP6F2R5SFA
DS = STMICROELECTRONICS STPS2L25U
C IN = SANYO 6TPB330M
C OUT = SANYO 4TPB470M
Date: 1/21/05
SP6120 Low Voltage, AnyFET TM , Synchronous, Buck Controller
1
? Copyright 2005 Sipex Corporation
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SP6120HVCY/TR 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Voltage, Synchronous ,Buck Controller Ideal for 2A to 20A, High Performance, DC-DC Power Converters
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