參數(shù)資料
型號： LP2995LQX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 通用總線功能
英文描述： DDR Termination Regulator
中文描述： BUS TERMINATOR SUPPORT CIRCUIT, PQCC16
封裝： LLP-16
文件頁數(shù)： 9/13頁
文件大?。?/td> 291K
代理商： LP2995LQX
Typical Application Circuits
The typical application circuit used for SSTL-2 termination
schemes with DDR-SDRAM can be seen in
Figure 5
.
For SSTL-3 and other applications it may be desirable to
change internal reference voltage scaling from VDDQ
*
0.5.
An external resistor in series with the VDDQ pin can be used
to lower the reference voltage. Internally two 50 k
resistors
set the output V
to be equal to VDDQ
*
0.5. The addition
of a 11.1 k
external resistor will change the internal refer-
ence voltage causing the two outputs to track VDDQ
*
0.45.
An implementation of this circuit can be seen in
Figure 6
.
Another application that is sometimes required is to increase
the V
TT
output voltage from the scaling factor of VDDQ
*
0.5.
This can be accomplished independently of V
REF
by using a
resistor divider network between V
, V
SENSE
and Ground.
An example of this circuit can be seen in
.
20039306
SSTL-2 Implementation
FIGURE 5.
20039307
SSTL-3 Implementation
FIGURE 6.
20039303
FIGURE 7.
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP2995LQX/NOPB 功能描述:IC REGULATOR DDR TERM 16-LLP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
LP2995M 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2995M 制造商:Texas Instruments 功能描述:IC, REG DDR TERMINATION, SMD, SO-8 制造商:Texas Instruments 功能描述:IC, REG DDR TERMINATION, SMD, SO-8; Primary Input Voltage:2.5V; Voltage Regulator Case Style:SOIC; No. of Pins:8; No. of Outputs:1; Output Current:1.5A; Operating Temperature Min:0C; Operating Temperature Max:125C; SVHC:No SVHC ;RoHS Compliant: Yes
LP2995M/NOPB 功能描述:低壓差穩(wěn)壓器 - LDO DDR Termination Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2995M-EVAL 功能描述:電源管理IC開發(fā)工具 LP2995M EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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