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參數(shù)資料
| 型號： | FAN6550 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 2A DDR Bus Termination Regulator |
| 中文描述： | 甲DDR總線終端穩(wěn)壓器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 99K |
| 代理商： | FAN6550 |
PRODUCT SPECIFICATION
FAN6550
REV. 1.0.2 3/11/02
5
Applications
Using the FAN6550 for DDR Bus Termination
The circuit schematic in Figure 1 shows a recommended
approach for constructing a bus terminating solution for a
DDR bus. This circuit can be used in PC memory and Graph-
ics memory applications as shown in Figures 2 and 3. Note
that the FAN6550 can provide the voltage reference (V
REF
)
and terminating voltages (V
TT
). Using the layout
as shown in Figures 4, 5, and 6, and measuring the V
TT
performance using the test setup as described in Figure 7,
the FAN6550 delivered a V
TT
± 20mV for 1A to 2A loads
(see Figure 8). Table 1 provides a recommended parts list.
Bus Termination Solutions for Others Buses
Table 2 provides a summary of various bus termination V
REF
& V
TT
requirements. The FAN6550 can be used for those
applications.
Figure 2. Complete Termination Solution PC Main Memory (PC Motherboard)
DATA LINE, CLOCK LINES,
ADDRESS LINES, CONTROL LINES
TERMINATION
RESISTORS
FAN6550
PC CHIP SET
NORTHBRIDGE
TERMINATION
RESISTORS
VTT
VREF
168/184/208-PIN DIMM CONNECTORS
AND SDRAM/SGRAM MODULES
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN6550M | 功能描述:DC/DC 開關(guān)控制器 2a DDR Bus Term RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| FAN6550MX | 功能描述:DC/DC 開關(guān)控制器 2a DDR Bus Term RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| FAN6555 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2A DDR Bus Termination Regulator |
| FAN6555M | 功能描述:DC/DC 開關(guān)控制器 2a DDR Bus Term RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| FAN6555M_Q | 功能描述:DC/DC 開關(guān)控制器 2a DDR Bus Term RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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