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PDF AP2302L Data sheet ( Hoja de datos )
| Número de pieza | AP2302L | |
| Descripción | 2A DDR TERMINATION REGULATOR | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Preliminary Datasheet
2A DDR TERMINATION REGULATOR
General Description
Features
AP2302L
The AP2302L 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 2A current continuously, providing
enough current for most DDR applications. VOUT is
designed to track the VREF voltage within a ± 20mV
tolerance over the entire current range while prevent-
ing shooting through on the output stage. On-chip ther-
mal 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 2A
· 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 AP2302L, used in conjunction with series termi- · DDR-SDRAM Termination
nation resistors, provides an excellent voltage source
for active termination schemes of high speed transmis-
sion lines as those seen in high speed memory buses
·
·
DDR-II Termination
SSTL-2 Termination
and distributed backplane designs.
The AP2302L is available in SOIC-8 and TO-252-5
packages.
www.DataSheet4U.com
Nov. 2005 Rev. 1. 1
SOIC-8
TO-252-5
Figure 1. Package Types of AP2302L
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
2A DDR TERMINATION REGULATOR
AP2302L
Electrical Characteristics
(TA=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
Quiescent Current of VCNTL
Leakage Current in Shutdown Mode
Protection
IQ
ISHDN
ΙL=0Α (Note 4)
IL=0 to 2A
IL=0 to -2A
IL=0 to 2A
IL=0 to -2A
No Load
VREFEN<0.2V, RL=180Ω
-20 0
-20 0
-20 0
3
3
Current Limit
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
ILIMIT
TSHDN
3.3V ≤VCNTL ≤5V
2.6
150
50
Shutdown Function
Shutdown Threshold Trigger
Output=High
Output=Low
0.8
Max Unit
20 mV
20
mV
20
5 mA
6 µA
A
oC
oC
0.2 V
Note 4: VOS is the voltage measurement defined as VOUT subtracted from VREFEN.
Nov. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
2A DDR TERMINATION REGULATOR
Mechanical Dimensions (Continued)
TO-252-5
Preliminary Datasheet
AP2302L
Unit: mm(inch)
6.350(0.250)
6.650(0.262)
5.200(0.205)
5.400(0.213)
0.430(0.017)
0.580(0.023)
2.200(0.087)
2.400(0.094)
9.500(0.374)
9.900(0.390)
1.270(0.050)
TYP
2.540(0.100)
TYP
0.000(0.000)
0.127(0.005)
5.400(0.213)
5.700(0.224)
2.550(0.100)
2.900(0.114)
0.400(0.016)
0.600(0.024)
0.430(0.017)
0.580(0.023)
1.400(0.055)
1.780(0.070)
3.800(0.150)
REF
Nov. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AP2302L.PDF ] | |
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