參數(shù)資料
型號： LM2678LD-12
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
封裝： LLP-14
文件頁數(shù)： 20/26頁
文件大?。?/td> 441K
代理商： LM2678LD-12
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Supply Voltage
45V
ON/OFF Pin Voltage
0.1V to 6V
Switch Voltage to Ground
1V to V
IN
Boost Pin Voltage
V
SW +8V
Feedback Pin Voltage
0.3V to 14V
Power Dissipation
Internally Limited
2 kV
Storage Temperature Range
65C to 150C
Soldering Temperature
Wave
4 sec, 260C
Infrared
10 sec, 240C
Vapor Phase
75 sec, 219C
Operating Ratings
Supply Voltage
8V to 40V
Junction Temperature Range (T
J)
40C to 125C
Electrical Characteristics Limits appearing in bold type face apply over the entire junction temperature
range of operation, 40C to 125C. Specifications appearing in normal type apply for T
A =TJ = 25C.
LM2678-3.3
Symbol
Parameter
Conditions
Typical
Min
Max
Units
V
OUT
Output Voltage
V
IN = 8V to 40V, 100mA
≤ I
OUT
≤ 5A
3.3
3.234/3.201
3.366/3.399
V
η
Efficiency
V
IN = 12V, ILOAD =5A
82
%
LM2678-5.0
Symbol
Parameter
Conditions
Typical
Min
Max
Units
V
OUT
Output Voltage
V
IN = 8V to 40V, 100mA
≤ I
OUT
≤ 5A
5.0
4.900/4.850
5.100/5.150
V
η
Efficiency
V
IN = 12V, ILOAD =5A
84
%
LM2678-12
Symbol
Parameter
Conditions
Typical
Min
Max
Units
V
OUT
Output Voltage
V
IN = 15V to 40V, 100mA
≤ I
OUT
≤ 5A
12
11.76/11.64
12.24/12.36
V
η
Efficiency
V
IN = 24V, ILOAD =5A
92
%
LM2678-ADJ
Symbol
Parameter
Conditions
Typ
Min
Max
Units
V
FB
Feedback
Voltage
V
IN = 8V to 40V, 100mA
≤ I
OUT
≤ 5A
V
OUT Programmed for 5V
1.21
1.186/1.174
1.234/1.246
V
η
Efficiency
V
IN = 12V, ILOAD =5A
84
%
LM2678
www.national.com
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相關(guān)PDF資料
PDF描述
LM2678LDX-5.0 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
LM2678LD-3.3 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
LM2678LD-5.0 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
LM2678LDX-12 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
LM2734XMKX/NOPB 2.5 A SWITCHING REGULATOR, 1900 kHz SWITCHING FREQ-MAX, PDSO6
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2678LD-3.3 制造商:Rochester Electronics LLC 功能描述:5A STEP DOWN SIMP SWITCH 260KH - Bulk
LM2678LD-5.0 制造商:Rochester Electronics LLC 功能描述:5A STEP DOWN SIMP SWITCH 260KH - Bulk
LM2678S-12 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(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 安裝風格:SMD/SMT
LM2678S-12/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 HIGH EFF 5A STEP- DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(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 安裝風格:SMD/SMT
LM2678S3.3 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 Rail
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