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參數(shù)資料
| 型號： | NE57814DD |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | DDR memory termination regulator with standby mode and enhanced efficiency |
| 封裝： | NE57814DD<SOT786-2 (HSO8)|<<http://www.nxp.com/packages/SOT786-2.html<1<week 13, 2004,; |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 203K |
| 代理商： | NE57814DD |
Philips Semiconductors
Product data
NE57814
DDR memory termination regulator with
standby mode and enhanced efficiency
2
2003 Apr 03
DESCRIPTION
The NE57814 is designed to provide power for termination of a DDR
memory bus. It significantly reduces parts count, board space, and
overall system cost over previous switching solutions. The NE57814
has an independent power source pin (V
D
) for further reducing the
operational power and a standby low-power mode for
energy-sensitive portable applications.
The DDR terminator regulator provides a very accurate reference
(RefOut) and termination voltage (V
TT
) which is one-half of the RAM
supply voltage over wide range of current demand.
HSO8 (TOP)
HSO8 (BOTTOM)
FEATURES
Fast transient response time
Over-temperature protection
Over-current protection
Commercial (0
°
C to 70
°
C) temperature range
High bandwidth drivers minimize requirement for output hold-up
filter capacitors
Internal divider maintains termination voltage at
1
/
2
memory
supply voltage
RefOut output pin for other memory and control components
APPLICATIONS
Laptop computers
Desktop microcomputer systems
Workstations
Set-top boxes
Servers
Networking routers and switches
Video display systems
Personal video recorders
Game machines
Embedded systems
SIMPLIFIED SYSTEM DIAGRAM
DIMM0
DIMM1
Control & Address
Data
NE57814
TERMINATION
POWER
RefOut
MEMORY
CONTROLLER
R
20
(typical)
R
27
(typical)
V
TT
0.1
μ
F
100
μ
F
SL01877
V
TT
SENSE
V
D
V
DD
STANDBY
(OPTIONAL)
ExtRefIn
(OPTIONAL)
Figure 1. Simplified system diagram.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NE57814DD,518 | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) DDR TERMINATOR REG RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| NE57814DD518 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| NE57835 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | BJT | NPN | 11V V(BR)CEO | 30MA I(C) | SOT-173 |
| NE578D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Compander |
| NE-58 | 制造商:Visual Communications Company (VCC) 功能描述:NE-58 /Refer New Part # F4A |
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