- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358906 > LP2960IN-5.0 (NATIONAL SEMICONDUCTOR CORP) Adjustable Micropower 0.5A Low-Dropout Regulators PDF資料下載
參數(shù)資料
| 型號(hào)： | LP2960IN-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Adjustable Micropower 0.5A Low-Dropout Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.8 V DROPOUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大?。?/td> | 452K |
| 代理商： | LP2960IN-5.0 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)當(dāng)前第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)
Application Hints
(Continued)
The next parameter which must be calculated is the maxi-
mum allowable temperature rise, T
R
(max). This is calcu-
lated by using the formula:
T
R
(max) = T
J
(max) T
A
(max)
where:
T
(max) is the maximum allowable junction temperature,
which is 125C for commercial grade parts.
T
(max) is the maximum ambient temperature which will be
encountered in the application.
Using the calculated values for T
(max) and P
, the maxi-
mum allowable value for the junction-to-ambient thermal re-
sistance,
θ
(JA)
, can now be found:
θ
(JA)
= T
R
(max)/P
D
The heatsink for the LP2960 is made using the PC board
copper, with the heat generated on the die being conducted
through the lead frame and out to the pins which are sol-
dered to the PC board.
The GND pins are the only ones capable of conducting any
significant amount of heat, as they are internally attached to
the lead frame on which the die is mounted.
The figure below shows recommended copper foil patterns
to be used for heatsinking the DIP and Surface Mount pack-
ages:
The table below shows measured values of
θ
(JA)
for a PC
board with 1 ounce copper weight:
Package
L (in.)
1
2
1
2
H (in.)
0.5
0.2
0.5
0.2
θ
JA
(C/W)
50
52
72
74
DIP
Surface
Mount
As the heat must transfer from the copper to the surrounding
air, best results (lowest
θ
) will be obtained by using a sur-
face copper layer with the solder resist opened up over the
heatsink area.
If an internal copper layer of a multi-layer board is used for
heatsinking, the board material acts as an insulator, inhibit-
ing heat transfer and increasing
θ
JA
.
As with any heatsink, increasing the airflow across the board
will significantly improve the heat transfer.
Heat Sink Foil Patterns
DS011962-31
www.national.com
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2960AIM-5.0 | Circular Connector; No. of Contacts:79; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:20; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:20-35 RoHS Compliant: No |
| LP2960AIN-3.3 | Circular Connector; No. of Contacts:41; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:20; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:20-41 RoHS Compliant: No |
| LP2960AIN-5.0 | Circular Connector; No. of Contacts:41; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:20; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:20-41 RoHS Compliant: No |
| LP2966IMM-3636 | Dual 150mA Ultra Low-Dropout Regulator |
| LP2966IMM-5050 | 1 in Diameter, 1 Amp, Single Deck Rotary Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2966IMM-1818 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:V REG LDO +1.8V SMD 2966 MSOP8 |
| LP2966IMM-1818 | 制造商:Texas Instruments 功能描述:V REG LDO +1.8V SMD 2966 MSOP8 |
| LP2966IMM-1818/NOPB | 功能描述:IC REG LDO 1.8V .15A 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2966IMM-1828 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC V REG LDO 150MA SMD SOIC8 |
| LP2966IMM-1828/NOPB | 功能描述:IC REG LDO 1.8V/2.8V .15A 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。