參數(shù)資料
型號(hào)： LM2587T-3.3
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER 5A Flyback Regulator
中文描述： 5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PSFM5
封裝： BENT STAGGERED, TO-220, 5 PIN
文件頁(yè)數(shù)： 24/26頁(yè)
文件大小： 676K
代理商： LM2587T-3.3
Application Hints
(Continued)
Boost:
where V
is the forward biased voltage of the diode and is
typically 0.5V for Schottky diodes and 0.8V for fast recovery
diodes. V
is the switch saturation voltage and can be
found in the Characteristic Curves.
When no heat sink is used, the junction temperature rise is:
T
J
= P
D
x
θ
JA
.
Adding the junction temperature rise to the maximum ambi-
ent temperature gives the actual operating junction tempera-
ture:
T
J
=
T
J
+ T
A
.
If the operating junction temperature exceeds the maximum
junction temperatue in item 3 above, then a heat sink is re-
quired. When using a heat sink, the junction temperature rise
can be determined by the following:
T
J
= P
D
x (
θ
JC
+
θ
Interface
+
θ
Heat Sink
)
Again, the operating junction temperature will be:
T
J
=
T
J
+ T
A
As before, if the maximum junction temperature is exceeded,
a larger heat sink is required (one that has a lower thermal
resistance).
Included in the
Switchers Made Simple
design software is
a more precise (non-linear) thermal model that can be used
to determine junction temperature with different input-output
parameters or different component values. It can also calcu-
late the heat sink thermal resistance required to maintain the
regulator junction temperature below the maximum operat-
ing temperature.
To further simplify the flyback regulator design procedure,
National Semiconductor is making available computer de-
sign software.
Switchers Made Simple
software is available
on a (3
1
2
") diskette for IBM compatable computers from a
National Semiconductor sales office in your area or the Na-
tional
Semiconductor
Customer
(1-800-272-9959).
Response
Center
European Magnetic Vendor
Contacts
Please contact the following addresses for details of local
distributors or representatives:
Coilcraft
21 Napier Place
Wardpark North
Cumbernauld, Scotland G68 0LL
Phone: +44 1236 730 595
Fax: +44 1236 730 627
Pulse Engineering
Dunmore Road
Tuam
Co. Galway, Ireland
Phone: +353 93 24 107
Fax: +353 93 24 459
www.national.com
24
相關(guān)PDF資料
PDF描述
LM2587T-5.0 SIMPLE SWITCHER 5A Flyback Regulator
LM2587S-5.0 SIMPLE SWITCHER 5A Flyback Regulator
LM2587S-ADJ SIMPLE SWITCHER 5A Flyback Regulator
LM2587S-3.3 RP DPA 60 DUST CAP
LM2587S-12 CONNECTOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2587T-5.0 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2587T-5.0/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2587T50 制造商:Texas Instruments 功能描述:SWITCHING REG 5A 5.0V 2587 TO-220
LM2587T-ADJ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2587T-ADJ 制造商:Texas Instruments 功能描述:SWITCHING REG 5A ADJ 2587 TO2205
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*