CM8500 Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – 3A BUS TERMINATOR

CM8500
3A BUS TERMINATOR
GENERAL DESCRIPTION
FEATURES
The CM8500 is a switching regulator designed to provide a
desired output voltage or termination voltage for various
applications by converting voltage supplies ranging from 2.0V
to 4.0V. The CM8500 can be implemented to produce
regulated output voltages in two different modes. In the
default mode, when the VIN/2 pin is open, the output voltage
is 50% of the VCCQ. The CM8500 can also be used to
produce various user-defined voltages by forcing a voltage on
the VIN/2 pin. In this case, the output voltage follows the
VIN/2 pin input voltage. The switching regulator is capable of
sourcing or sinking up to 3A of current while regulating an
output V _TT voltage to within 3% or less.
The CM8500, used in conjunction with series termination
resistors, provides an excellent voltage source for active
termination schemes of high speed transmission lines as
those seen in high speed memory buses and distributed
backplane designs.
Patent Filed #6,452,366
16 pin PTSSOP and PSOP package
Source and sink up to 3A, no heat sink required
Peak Current to 6A
Integrated Power MOSFETs
Output voltage can be programmed by external resistors
Separate voltages for VCCQ and PVDD
V OUT of ±3% or less at 3A
Minimum external components
Shutdown for standby or suspend mode operation
Thermal shutdown protection
Soft start
The voltage output of the regulator can be used as a
termination voltage for other bus interface standards such as
SSTL, CMOS, Rambus ™ ,GTL+, VME, LV-CMOS, LV-TTL,
and PECL.
APPLICATIONS
Mother Board
PCI / AGP Graphics
Game / Play Station
Set Top Box
IPC
SCSI-III Bus terminator
Buck Converter
PIN CONFIGURATION
PSOP-16 (PS16)/PTSSOP-16 (PT16)
Top View
1
VCC1
VCC2
16
2
PVDD1
PVDD2
15
3
VL1
VL2
14
4
PGND1
PGND2
13
5
AGND
AGND
12
6
SD
VFB
11
7
VIN/2
VCCQ
10
8
AGSEN
AGND
9
2004/06/01 Rev. 1.1
Champion Microelectronic Corporation
Page 1