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PDF AP1280AMP Data sheet ( Hoja de datos )
| Número de pieza | AP1280AMP | |
| Descripción | 2A SINK/SOURCE BUS TERMINATION REGULATOR | |
| Fabricantes | Advanced Power Electronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP1280AMP (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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Advanced Power
Electronics Corp.
AP1280AMP
2A SINK/SOURCE BUS TERMINATION REGULATOR
FEATURES
Ideal for DDR-I, DDR-II and DDR-III VTT Applications
Sink and Source up to 2Amp
Integrated Power MOSFETs
Generates Termination Voltage for SSTL_2, SSTL_18,
HSTL, SCSI-2 and SCSI-3 Interfaces.
High Accuracy Output Voltage at Full-Load
Output Adjustment by Two External Resistors
Built-in Soft-start Function
Shutdown for Suspend to RAM (STR) Functionality
with High-Impedance Output
Current Limiting Protection
On-Chip Thermal Protection
Available in ESOP-8 (Exposed Pad) Packages
VIN and VCNTL Under Voltage Protection
RoHS Compliant and Halogen Free
APPLICATION
Desktop PCs, Notebooks, and Workstations
Graphics Card Memory Termination
Set Top Boxes, Digital TVs, Printers
Embedded Systems
Active Termination Buses
DDR-I, DDR-II and DDR-III Memory Systems
TYPICAL APPLICATION
.
DESCRIPTIOON
The AP1280AMP is a simple, cost-effective and
high-speed linear regulator designed to generate
termination voltage in double data rate (DDR) memory
system to comply with the JEDEC SSTL_2 and
SSTL_18 or other specific interfaces such as HSTL,
SCSI-2 and SCSI-3 etc. devices requirements. The
regulator is capable of actively sinking or sourcing up to
2A while regulating an output voltage to within 40mV.
The output termination voltage cab be tightly regulated
to track 1/2VDDQ by two external voltage divider resistors
or the desired output voltage can be pro-grammed by
externally forcing the REFEN pin voltage.
The AP1280AMP also incorporates a high-speed
differential amplifier to provide ultra-fast response in
line/load transient. Other features include extremely low
initial offset voltage, excellent load regulation, current
limiting in bi-directions and on-chip thermal shut-down
protection.Built-in softstart function avoids a
misoperation by inrush current.
The AP1280AMP are available in the ESOP-8
(Exposed Pad) surface mount packages.
VIN
CIN
Shutdown
VIN VCNTL
R1
AP1280AMP
REFEN
VOUT
R2 CSS
GND
VCNTL
CCNTL
VOUT
RTT
COUT
RDUMMY
Enable
R1 = R2 = 100 KΩ , RTT = 50Ω / 33Ω / 25Ω
COUT = 10uF ( + 100 uF under the worst case testing condition )
CSS = 1uF , CIN = 470 uF (Low ESR) , CCNTL = 47uF
Data and specifications subject to change without notice
1
20140418V4.3
1 page  
Advanced Power
Electronics Corp.
TYPICAL PERFORMANCE CHARACTERISTICS
AP1280AMP
DDRII Output Voltage vs Temperature
0.904
0.902
0.9
0.898
0.896
0.894
0.892
-50
0.606
0 50 100
Temperature ( o C)
150
Low-V DDRIII Output Voltage vs Temperature
0.604
0.602
0.6
0.598
0.596
0.594
0.592
-50
6
0 50 100
Temperature ( o C)
Source Current Limit vs Temperature
150
.
5
4
3
2
1 DDRII
DDRIII
0
-50
0
50 100 150
Temperature ( o C)
0.752
0.75
0.748
0.746
0.744
0.742
0.74
0.738
-50
2
DDRIII Output Voltage vs Temperature
0 50 100
Temperature ( o C)
VCNTL Current vs Temperature
150
1.6
1.2
0.8
DDRII
0.4
DDRIII
Low_V DDRIII
0
-50 0 50 100 150
Temperature ( o C)
Sink Current Limit vs Temperature
5
4
3
2
1
DDRII
DDRIII
0
-50
0
50 100 150
Temperature ( o C)
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AP1280AMP.PDF ] | |
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