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PDF AIC1383 Data sheet ( Hoja de datos )
| Número de pieza | AIC1383 | |
| Descripción | 1.5A Termination Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1383
1.5A Termination Regulator
FEATURES
1.5A Source and Sink Current Ability
Support DDR1 (1.25VTT) and DDR2 (0.9VTT)
Requirements
Low Output Voltage Offset, ±20mV
High Accuracy Output Voltage at Full-Load
Adjustable VOUT by External Resistor
Low External Component Count
Current Limit protection
Thermal Protection
SOP-8 Package
APPLICATIONS
Mother Board
Graphic Cards
DDR Termination Voltage Supply
DESCRIPTION
AIC1383 linear regulator is designed to achieve
1.5A source and sink current while regulating
an output voltage to within 25mV.
AIC1383 converts voltage supplies range from
1.6V to 6V into an output voltage that adjusts by
two external voltage divider resistors. It
provides an excellent voltage source for active
termination schemes of high-speed
transmission lines as those seen in high-speed
memory buses, and it meets the JEDEC SSTL-
2 and SSTL-3 specifications for termination of
DDR-SRAM.
Built-in current limiting in source and sink mode,
with thermal shutdown provide maximal
protection to the AIC1383 against fault
conditions.
TYPICAL APPLICATION CIRCUIT
VIN=2.5V
CIN
470µF
+
R1
100K
1 VIN
2 GND
8
VCNTL
7
VCNTL
EN
CES7002A
C1 R2
100pF 100K
3 VREF
6
VCNTL
VOUT=1.25V 4 VOUT
5
VCNTL
+ COUT
AIC1383
220µF
VCNTL=3.3V
+
CCNTL
47µF
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1383P-02 010405
1
1 page  
AIC1383
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
VIN=2.5V
VCNTL=3.3V
VREF=1.25V
VIN=2.5V
VCNTL=3.3V
VREF=1.25V
IOUT : 1A/DIV
IOUT : 1A/DIV
Fig. 6 Output Short-Circuit (Sinking)
VOUT: 50mV/DIV
IOUT : 1A/DIV
VIN=2.5V
VCNTL=3.3V
VREF=1.25V
Fig. 7 Output Short-Circuit Protection (Sourcing)
VOUT: 50mV/DIV
IOUT : 1A/DIV
VIN=1.8V
VCNTL=3.3V
VREF=0.9V
Fig. 8 Transient Response at 1.25VTT/1.5A
BLOCK DIAGRAM
VCNTL
VREF
VOUT
+
Control
-
Shutdown
Fig. 9 Transient Response at 0.9VTT/1.5A
VIN
Current
Limit
Thermal
Shutdown
VOUT
GND
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AIC1383.PDF ] | |
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