SP6120B Datasheet, PDF (1/22 Pages) Sipex Corporation – Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters

®
SP6120B
Low Voltage, AnyFET^TM, Synchronous ,Buck Controller
Ideal for 2A to 10A, High Performance, DC-DC Power Converters
■ Optimized for Single Supply, 3V - 5.5V Applications
■ High Efficiency: Greater Than 95% Possible
N/C 1
16 BST
■ "AnyFET^TM" Technology: Capable Of Switching Either
PFET Or NFET High Side Switch
■ Selectable Discontinuous or Continuous Conduction
Mode
■ Fast Transient Response from Window Comparator
■ 16-Pin TSSOP, Small Size
■ Accurate 1% Reference Over Line, Load and Temperature
ENABLE 2
ISP 3
ISN 4
V_FB 5
COMP 6
SS 7
R_OSC 8
SP6120B
16 Pin TSSOP
15 GH
14 SWN
13 GND
12 PGND
11 GL
10 V_CC
9 PROG
■ Accurate 10% Frequency
Now Available in Lead Free Packaging
■ Accurate, Rail to Rail, 43mV, Over-Current Sensing
■ Resistor Programmable Frequency
■ Resistor Programmable Output Voltage
■ Low Quiescent Current: 950µA, 10µA in Shutdown
■ Hiccup Over-Current Protection
■ Capacitor Programmable Soft Start
■ Guaranteed Boost Voltage to Enhance High Side NFET
APPLICATIONS
■ DSP
■ Microprocessor Core
■ I/O & Logic
■ Industrial Control
■ Distributed Power
■ 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.
ENABLE
RZ
15k
CP
100pF
CZ
4.7nF
CSS
0.33µF
NMOS High Side Drive
PROG = GND
NC
® BST
ENABLE
GH
ISP
SWN
SP6120B
ISN
GND
VFB
COMP
PGND
GL
SS
ROSC
VCC
PROG
ROSC
18.7k
MBR0530
CBST
1µF
QT
QB
VIN
CVCC
2.2µF
3.3V
VIN
CB
CIN
1µF
330µF x 2
RS
CS
22.1k
39nF
L1
2.5µH
DS
RF
5.23k
RI
10k
1.9V
1A to 8A
VOUT
COUT
470µF x 3
PMOS High Side Drive
PROG = VCC
ENABLE
NC
ENABLE
® BST
GH
ISP
SWN
SP6120B
ISN
GND
VFB
COMP
PGND
GL
RZ
15k
CP
100pF
CZ
4.7nF
SS
CSS
0.33µF
ROSC
ROSC
18.7k
VCC
PROG
3.3V
VIN
CIN
330µF x 2
QT1
RS
22.1k
L1
2.5µH
CS
39nF 1.9V
1A to 8A
VOUT
QB
DS
V_IN
RF
5.23k
COUT
470µF x 3
CV_CC
2.2µF
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: 5/25/04
SP6120B Low Voltage, AnyFET^TM, Synchronous, Buck Controller
© Copyright 2004 Sipex Corporation
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