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SP6120_05 Datasheet(PDF) 1 Page - Sipex Corporation

Part No. SP6120_05
Description  Low Voltage, AnyFETTM, Synchronous,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters
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Maker  SIPEX [Sipex Corporation]
Homepage  http://www.sipex.com
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1
Date: 1/21/05
SP6120 Low Voltage, AnyFETTM, Synchronous, Buck Controller
© Copyright 2005 Sipex Corporation
SP6120
■ Optimized for Single Supply, 3V - 5.5V Applications
■ High Efficiency: Greater Than 95% Possible
■ "AnyFETTM" 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
■ Accurate 1% Reference Over Line, Load and Temperature
■ Accurate 10% Frequency
■ Accurate, Rail to Rail, 43mV, Over-Current Sensing
■ Resistor Programmable Frequency
■ Resistor Programmable Output Voltage
■ Capacitor Programmable Soft Start
■ Low Quiescent Current: 950µA, 10µA in Shutdown
■ Hiccup Over-Current Protection
Low Voltage, AnyFETTM, Synchronous,Buck Controller
Ideal for 2A to 10A, High Performance, DC-DC Power Converters
APPLICATIONS
■ DSP
■ Microprocessor Core
■ I/O & Logic
■ Industrial Control
■ Distributed Power
■ 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 "AnyFETTM"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.
®
SP6120
NC
ENABLE
ISP
ISN
VFB
COMP
SS
ROSC
BST
GH
SWN
GND
PGND
GL
VCC
PROG
®
®
NMOS High Side Drive
PROG = GND
ENABLE
CP
100pF
CZ
4.7nF
RZ
15k
CSS
0.33µF
ROSC
18.7k
CVCC
2.2µF
VIN
MBR0530
CBST
1µF
QT
3.3V
VIN
CIN
330µF x 2
RS
22.1k
CS
39nF
L1
2.5µH
1.9V
1A to 8A
VOUT
RF
5.23k
COUT
470µF x 3
RI
10k
QB
DS
SP6120
NC
ENABLE
ISP
ISN
VFB
COMP
SS
ROSC
BST
GH
SWN
GND
PGND
GL
VCC
PROG
®
®
PMOS High Side Drive
PROG = VCC
ENABLE
CP
100pF
CZ
4.7nF
RZ
15k
CSS
0.33µF
ROSC
18.7k
CVCC
2.2µF
VIN
QT1
3.3V
VIN
CIN
330µF x 2
RS
22.1k
CS
39nF
L1
2.5µH
1.9V
1A to 8A
VOUT
RF
5.23k
COUT
470µF x 3
RI
10k
QB
DS
1
2
16
15
14
13
12
11
3
4
5
6
7
8
10
9
N/C
ENABLE
ISP
ISN
VFB
COMP
SS
ROSC
BST
GH
SWN
GND
PGND
GL
VCC
PROG
SP6120
16 Pin TSSOP
QT, QB = FAIRCHILD FDS6690A
QT1 = FAIRCHILD FDS6375 (PMOS only)
L1 = PANASONIC ETQP6F2R5SFA
DS = STMICROELECTRONICS STPS2L25U
C
IN = SANYO 6TPB330M
C
OUT = SANYO 4TPB470M
FEATURES
TYPICAL APPLICATIONS CIRCUIT
Now Available in Lead Free Packaging



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