- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44550 > LM2679SDX-5.0/NOPB (NATIONAL SEMICONDUCTOR CORP) 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 PDF資料下載
參數(shù)資料
| 型號： | LM2679SDX-5.0/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| 封裝： | LLP-14 |
| 文件頁數(shù)： | 22/26頁 |
| 文件大?。?/td> | 672K |
| 代理商： | LM2679SDX-5.0/NOPB |
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings indicate conditions under which of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test condition, see the electrical
Characteristics tables.
Note 2:
ESD was applied using the human-body model, a 100pF capacitor discharged through a 1.5 k
Ω resistor into each pin.
Note 3:
Typical values are determined with T
A = TJ = 25°C and represent the most likely norm.
Note 4:
All limits are guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
tested during production with T
A = TJ = 25°C. All limits at temperature extremes are guaranteed via correlation using standard standard Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 5:
The peak switch current limit is determined by the following relationship: I
CL=37,125/ RADJ.
Note 6:
Junction to ambient thermal resistance (no external heat sink) for the 7 lead TO-220 package mounted vertically, with inch leads in a socket, or on a
PC board with minimum copper area.
Note 7:
Junction to ambient thermal resistance (no external heat sink) for the 7 lead TO-220 package mounted vertically, with inch leads soldered to a PC
board containing approximately 4 square inches of (1 oz.) copper area surrounding the leads.
Note 8:
Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board area of 0.136 square inches (the same size as
the TO-263 package) of 1 oz. (0.0014 in. thick) copper.
Note 9:
Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board area of 0.4896 square inches (3.6 times the area
of the TO-263 package) of 1 oz. (0.0014 in. thick) copper.
Note 10:
Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board copper area of 1.0064 square inches (7.4 times
the area of the TO-263 package) of 1 oz. (0.0014 in. thick) copper. Additional copper area will reduce thermal resistance further. See the thermal model in Switchers
Made Simple software.
Note 11:
Junction to ambient thermal resistance for the 14-lead LLP mounted on a PC board copper area equal to the die attach paddle.
Note 12:
Junction to ambient thermal resistance for the 14-lead LLP mounted on a PC board copper area using 12 vias to a second layer of copper equal to die
attach paddle. Additional copper area will reduce thermal resistance further. For layout recommendations, refer to Application Note AN-1187.
Note 13:
The absolute maximum specification of the 'Switch Voltage to Ground' applies to DC voltage. An extended negative voltage limit of -10V applies to a
pulse of up to 20 ns, -6V of 60 ns and -3V of up to 100 ns.
5
www.national.com
LM2679
相關PDF資料 |
PDF描述 |
|---|---|
| LM2679SD-12/NOPB | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| LM2702MT-ADJ/NOPB | 2.6 A SWITCHING REGULATOR, 720 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM27402SQX | SWITCHING CONTROLLER, 1350 kHz SWITCHING FREQ-MAX, QCC16 |
| LM27402MHX | SWITCHING CONTROLLER, 1350 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM2770SD-12157/NOPB | SWITCHED CAPACITOR REGULATOR, 925 kHz SWITCHING FREQ-MAX, DSO10 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2679SDX-ADJ | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM2679SDX-ADJ/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM2679SX-12 | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM2679SX-12/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM2679SX12NOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 T/R |
發(fā)布緊急采購，3分鐘左右您將得到回復。