SP6120_05 Datasheet, PDF (1/22 Pages) Sipex Corporation – Low Voltage, AnyFETTM, Synchronous,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters

®
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
■ 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
■ Resistor Programmable Output Voltage
■ Capacitor Programmable Soft Start
■ Low Quiescent Current: 950µA, 10µA in Shutdown
■ Hiccup Over-Current Protection
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 "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
ENABLE
RZ
15k
CP
100pF
CZ
4.7nF
NMOS High Side Drive
PROG = GND
NC
® BST
ENABLE
GH
ISP
SWN
SP6120
ISN
GND
V_FB
COMP
PGND
GL
CSS
0.33µF
SS
R_OSC
V_CC
PROG
R_OSC
18.7k
MBR0530
CBST
1µF
QT
QB
V_IN
CV_CC
2.2µF
3.3V
V_IN
C_IN
330µF x 2
RS
22.1k
L1
2.5µH
CS
39nF 1.9V
1A to 8A
V_OUT
DS
RF
5.23k
C_OUT
470µF x 3
RI
10k
PMOS High Side Drive
PROG = V_CC
ENABLE
NC
ENABLE
® BST
GH
ISP
SWN
SP6120
ISN
GND
V_FB
COMP
PGND
GL
RZ
15k
CP
100pF
CZ
4.7nF
SS
CSS
0.33µF
R_OSC
R_OSC
18.7k
V_CC
PROG
3.3V
V_IN
C_IN
330µF x 2
QT1
RS
CS
22.1k
L1
2.5µH
39nF 1.9V
1A to 8A
V_OUT
QB
DS
V_IN
RF
5.23k
C_OUT
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: 1/21/05
SP6120 Low Voltage, AnyFET^TM, Synchronous, Buck Controller
© Copyright 2005 Sipex Corporation
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