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PDF AP2302 Data sheet ( Hoja de datos )
| Número de pieza | AP2302 | |
| Descripción | 3A DDR TERMINATION REGULATOR | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP2302 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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Preliminary Datasheet
3A DDR TERMINATION REGULATOR
General Description
Features
AP2302
The AP2302 linear regulator is designed to meet the
JEDEC specification SSTL-2 and SSTL-18 for termi-
nation of DDR-SDRAM. The regulator can sink or
source up to 3A current continuously, offers enough
current for most DDR applications. Output voltage is
designed to track the reference voltage within a 2%
(DDR I) and 3% (DDR II) tolerance for load regulation
while preventing shooting through on the output stage.
On-chip thermal limiting provides protection against a
combination of high current and ambient temperature
which would create an excessive junction temperature.
· Support Both DDR I (1.25VTT) and DDR II
(0.9VTT) Requirements
· Source and Sink Current up to 3A
· High Accuracy Output Voltage at Full-load
· Adjustable VOUT by External Resistors
· Shutdown for Standby or Suspend Mode
Operation with High-impedance Output
Applications
The AP2302, used in conjunction with series termina-
tion resistors, provides an excellent voltage source for
·
DDR-SDRAM Termination
active termination schemes of high speed transmission · DDR-II Termination
lines as those seen in high speed memory buses and · SSTL-2 Termination
distributed backplane designs.
The AP2302 is available in SOIC-8, TO-252-5L and
TO-263-5L packages.
www.DataSheet4U.com
SOIC-8
TO-252-5L
TO-263-5L
Jul. 2006 Rev. 1. 2
Figure 1. Package Types of AP2302
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
3A DDR TERMINATION REGULATOR
Electrical Characteristics
(TJ=25oC, VIN=2.5V, VCNTL=3.3V, VREFEN=1.25V, COUT=10µF (Ceramic), unless otherwise specified.)
Parameter
Symbol
Conditions
Min Typ
Output Offset Voltage
VOS
Load
Regulation
DDR I
DDR II
∆VOUT/
VOUT
Quiescent Current of VCNTL
Leakage Current in Shutdown Mode
Protection
IQ
ISHDN
IL=0A (Note 4)
IL=0 to 1.5A
IL=0 to -1.5A
IL=0 to 1.5A
IL=0 to -1.5A
No Load
VREFEN<0.2V, RL=180Ω
-20 0
0.8
0.8
1.2
1.2
3
3
Current Limit
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
ILIMIT
TSHDN
3.3V≤VCNTL≤5V
3
150
50
Shutdown Function
Shutdown Threshold Trigger
Output=High
Output=Low
0.8
AP2302
Max Unit
20 mV
2
2
%
3
3
5 mA
6 µA
A
oC
oC
0.2 V
Note 4: VOS is the voltage measurement defined as VOUT subtracted from VREFEN.
Jul. 2006 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
5 Page 
3A DDR TERMINATION REGULATOR
Mechanical Dimensions (Continued)
TO-252-5L
Preliminary Datasheet
AP2302
Unit: mm(inch)
0.900(0.035)
1.250(0.049)
6.350(0.250)
6.700(0.264)
4.300(0.169)
5.500(0.217)
0.430(0.017)
0.600(0.023)
2.180(0.086)
2.400(0.094)
9.500(0.374)
10.400(0.410)
0.000(0.000)
0.250(0.010)
5.970(0.235)
6.220(0.245)
4.300(0.169)
5.400(0.213)
2.540(0.100)BSC
5.080(0.200)
BSC
0.450(0.018)
0.700(0.028)
1.400(0.055)
1.780(0.070)
2.550(0.100)
3.200(0.126)
0.430(0.017)
0.600(0.023)
4.800(0.189)
MIN
Jul. 2006 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AP2302.PDF ] | |
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