SC1153CSW Semtech Corporation, SC1153CSW Datasheet

no-image

SC1153CSW

Manufacturer Part Number
SC1153CSW
Description
SC1153CSWPROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS
Manufacturer
Semtech Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC1153CSW
Manufacturer:
NXPLIPS
Quantity:
5 510
Part Number:
SC1153CSW
Manufacturer:
SC
Quantity:
1 000
查询SC1153供应商
PRELIMINARY - October 3, 2000
DESCRIPTION
The SC1153 is a low-cost, full featured, synchronous
voltage-mode controller designed for use in single
ended power supply applications where efficiency is of
primary concern. Synchronous operation allows for the
elimination of heat sinks in many applications. The
SC1153 is ideal for implementing DC/DC converters
needed to power advanced microprocessors, such as
Pentium
figurations. Internal level-shift, high-side drive circuitry,
and preset shoot-thru control, allows for use of inex-
pensive n-channel power switches.
SC1153 features include an integrated 5-bit VID DAC,
temperature compensated voltage reference, triangle
wave oscillator, current limit comparator, frequency
shift over-current protection, and an accessible, inter-
nally compensated error amplifier. Power good signal-
ing, logic compatible shutdown, and over voltage pro-
tection are also provided.
The SC1153 operates at a fixed 200KHz, providing an
optimum compromise between efficiency, external
component size, and cost.
PIN CONFIGURATION
© 2000 SEMTECH CORP.
®
lll, in both single and multiple processor con-
(20-Pin SOIC)
Top View
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
PWRGOOD
VOSENSE
BLOCK DIAGRAM
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
OVP
VID4
VID3
VID2
VID1
VID0
OPEN COLLECTORS
VCC
1.25V REF
D/A
VCC CS-
FEATURES
APPLICATIONS
ORDERING INFORMATION
Note:
(1) Only available in tape and reel packaging. A reel
contains 1000 devices.
SC1153CSW.TR
=
=
=
=
=
=
=
=
=
=
=
652 MITCHELL ROAD NEWBURY PARK CA 91320
Low cost / full featured
Synchronous operation
5 Bit VID programmable output
On-chip power good and OVP functions
Designed to meet Intel VRM 8.4 (Pentium
1.3V to 3.5V Range, 1% tolerance
Pentium
Multiple Microprocessor Supplies
Voltage Regulator Modules (VRM)
Programmable Power Supplies
High Efficiency DC/DC Conversion
DEVICE
70mV
CS+
OSCILLATOR
200kHz
ERROR
AMP
CURRENT LIMIT
®
(1)
IlI Core Supply
GND
Pentium is a registered trademark of Intel Corporation
R
S
PACKAGE
Q
SO-20
SHUTDOWN
TEMP. RANGE (T
SHOOT-THRU
SYNCHRONOUS
CONTROL
FET DRIVE
UPPER FET
LEVEL SHIFT
AND DRIVE
0 - 125°C
SC1153
®
IlI)
BSTH
DH
PGNDH
BSTL
DL
PGNDL
J
1
)

Related parts for SC1153CSW

SC1153CSW Summary of contents

Page 1

... IlI Core Supply = Multiple Microprocessor Supplies = Voltage Regulator Modules (VRM) = Programmable Power Supplies = High Efficiency DC/DC Conversion ORDERING INFORMATION (1) DEVICE SC1153CSW.TR Note: (1) Only available in tape and reel packaging. A reel contains 1000 devices. BLOCK DIAGRAM VCC CS- CS+ CURRENT LIMIT 1.25V REF 70mV VID4 VID3 ...

Page 2

PRELIMINARY - October 3, 2000 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Maximum V to GND PGND to GND BST to GND Thermal Resistance Junction to Case JC Thermal Resistance Junction to Ambient JA Operating T A Temperature Range ...

Page 3

PRELIMINARY - October 3, 2000 PIN DESCRIPTION Pin # Pin Name 1 GND 2 VCC 3 OVP (1) 4 PWRGOOD 5 CS(-) 6 CS(+) 7 PGNDH PGNDL BSTL 13 BSTH (1) 14 ...

Page 4

PRELIMINARY - October 3, 2000 APPLICATION CIRCUIT 10k 1000uF 0.1uF 1000uF 1000uF R5 10 12V IN OVP VID0 20 VID1 19 VID2 18 VID3 17 VID4 14 10 C13 0.1uF ...

Page 5

PRELIMINARY - October 3, 2000 OUTPUT VOLTAGE TABLE Unless specified 5.00V; GND = PGND = 0V PARAMETER Output Voltage Application Circuit O (Figure 1) © 2000 SEMTECH CORP. PROGRAMMABLE SYNCHRONOUS ...

Page 6

PRELIMINARY - October 3, 2000 CHARACTERISTIC CURVES SC1153 Efficiency in Application Circuit (Figure 1). 100% 95% 90% 85% 80% 75% 70 SC1153 Regulation in Application Circuit (Figure 1 -10 -15 -20 - ...

Page 7

PRELIMINARY - October 3, 2000 OUTLINE DRAWING SO-20 THEORY OF OPERATION The voltage at the VOSENSE pin is applied, through the internal precision resistor feedback chain, to the inverting input of the error amplifier. The non-inverting input of the error ...

Related keywords