AIC1383B
3A Termination Regulator
FEATURES
DESCRIPTION
3A Source and Sink Current Ability
AIC1383B linear regulator is designed to
Support DDR1 (1.25VTT) and DDR2 (0.9VTT)
Requirements
achieve 3A source and sink current while
Low Output Voltage Offset, ±20mV
AIC1383B converts voltage supplies range
High Accuracy Output Voltage at Full-Load
from 1.6V to 6V into an output voltage that
Adjustable VOUT by External Resistor
adjusts
Low External Component Count
resistors. It provides an excellent voltage
regulating an output voltage to within 45mV.
by two
external
voltage
divider
source for active termination schemes of high-
Current Limit protection
speed transmission lines as those seen in
Thermal Protection
high-speed memory buses, and it meets the
SOP-8, TO-252 and TO-263 Packages
JEDEC SSTL-2 and SSTL-3 specifications for
RoHS Compliant and Green Package
termination of DDR-SRAM.
Built-in current limiting in source and sink
APPLICATIONS
mode,
Mother Board
Graphic Cards
DDR Termination Voltage Supply
with
thermal
shutdown
provide
maximal protection to the AIC1383B against
fault conditions.
TYPICAL APPLICATION CIRCUIT
1
VIN=2.5V
+
CIN
470µF
VIN
5
VOUT
2
VOUT
GND
4
3
VCNTL=3.3V
+
+
VREF
VCNTL
AIC1383B
CCNTL
47µF
Analog Integrations Corporation
R1
100K
COUT
220µF
C1
100pF
R2
100K
EN
CES7002A
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-1383BG-01 071609
1