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PDF CM8501A Data sheet ( Hoja de datos )
| Número de pieza | CM8501A | |
| Descripción | 1.5A BUS TERMINATOR | |
| Fabricantes | Champion | |
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CM8501/A
1.5A BUS TERMINATOR
GENERAL DESCRIPTION
FEATURES
The CM8501/A is a low cost 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 CM8501 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 CM8501 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 regulated output voltage of
CM8501A is internally set to be 50% of the applied VCCQ.
The switching regulator is capable of sourcing or sinking up to
1.5A of current while regulating an output V TT voltage to
within 3% or less.
The CM8501A could guarantee to provide continuous
sinking or sourcing up to 2A current while enlarging the
layout GND pad dimension as layout suggestion in page
6.
Patent Filed #6,452,366
8-pin PSOP, 16 pin PTSSOP and 16 pin PSOP power
packages
Source and sink up to 1.5A, no heat sink required
Peak Current to 3A
Integrated Power MOSFETs
Output voltage can be programmed by external resistors
(CM8501)
Separate voltages for VCCQ and PVDD
V OUT of ±3% or less at 1.5A
Minimum external components
Shutdown for standby or suspend mode operation
Thermal shutdown protection
Soft start
The CM8501/A provides low profile 8-pin PSOP package to
save system space as well as 16-pin PSOP and PTSSOP
packages that are pin-to-pin compatible to the previous
CM8500.
24 Hours Technical Support---WebSIM
Champion provides customers an online circuit simulation tool
called WebSIM. You could simply logon our website at
www.champion-micro.com for details.
APPLICATIONS
Mother Board
PCI/AGP Graphics
Game/ Play Station
Set Top Box
IPC
SCSI-III Bus terminator
Buck Converter
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 1
1 page  
CM8501/A
1.5A BUS TERMINATOR
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which the
device could be permanently damaged.
PVDD/VCCA/VCCQ ......................................….......-0.3V to 4.0V
Voltage on Any Other Pin …………... GND – 0.3V to VCC + 0.3V
Output RMS Current, Source or Sink .....…………........…...1.5A
Junction Temperature ...…………………… …………150°C
Storage Temperature ……................……. -65°C to 125°C
Lead Temperature (Soldering, 5 sec)……………….. 300°C
16-Pin Package Thermal Resistance(θJA )….. .. .40°C/W
8-Pin Package Thermal Resistance(θJA )….….. .50°C/W
OPERATING CONDITIONS
Temperature Range ............................. -40°C to 85°C
PVDD Operating Range .........................2.0V to 4.0V
ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply TA=25°C;
VCCA=+3.3V and PVDD=+3.3V) maximum ratings are stress ratings only and functional device operation is not implied.
(Note 1)
Symbol
Parameter
Test Conditions
Min.
CM8501/A
Typ.
SWITCHING REGULATOR
VL Output Voltage, SSTL_2
IOUT = 0, VCCQ = 2.3V
VCCQ = 2.5V
Note 2 VCCQ = 2.7V
IOUT = VCCQ = 2.3V
±1.5A, VCCQ = 2.5V
Note 2
Note 3 VCCQ = 2.7V
1.12
1.22
1.32
1.09
1.19
1.28
1.15
1.25
1.35
1.15
1.25
1.35
VIN/2
ZIN
fsw
IOUT(RMS)
IOUT(PEAK)
OTS
Internal Resistor Divider
VIN/2 Reference Pin Input Impedance
Switching Frequency
Minimum Output RMS Current
Maximum Output Peak Current
Over Temperature Shutdown
IOUT = 0
Note 2
VCCQ = 2.3V
VCCQ = 2.5V
VCCQ = 2.7V
Note 2 VCCQ = 0
CM8501/A
CM8501/A
CM8501/A
CM8501/A
1.139
1.238
1.337
0.9
1.5
135
1.15
1.25
1.35
50
1.2
2.0
150
MOSFETs
RDS(ON)
SUPPLY
IVCCA
IPVDD
Drain to Source on-State Resistance
Quiescent Current
PVDD=5V
VFB = 1.4V
LC unconnected
VFB = 1.4V
LC unconnected
250
220
500
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions
Note 2: VCCA, PVDD = 3.3V ±10%, VIN/2=open for CM8501
Note 3: Guaranteed by design, not 100% test
Max.
1.18
1.28
1.38
1.21
1.31
1.42
1.162
1.263
1.364
1.5
3
Unit
V
V
V
V
V
V
V
V
V
KΩ
MHz
A
A
℃
mΩ
µA
µA
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CM8501A.PDF ] | |
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