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参数资料
| 型号： | LM2679SDX-12/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| 封装： | LLP-14 |
| 文件页数： | 20/26页 |
| 文件大小： | 672K |
| 代理商： | LM2679SDX-12/NOPB |
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
Softstart Pin Voltage
0.1V to 6V
Switch Voltage to Ground (Note 13)
1V to V
IN
Boost Pin Voltage
V
SW + 8V
Feedback Pin Voltage
0.3V to 14V
Power Dissipation
Internally Limited
ESD (Note 2)
2 kV
Storage Temperature Range
65°C to 150°C
Soldering Temperature
Wave
4 sec, 260°C
Infrared
10 sec, 240°C
Vapor Phase
75 sec, 219°C
Operating Ratings
Supply Voltage
8V to 40V
Junction Temperature Range (T
J)
40°C to 125°C
Electrical Characteristics Limits appearing in bold type face apply over the entire junction temperature range
of operation, 40°C to 125°C. Specifications appearing in normal type apply for T
A = TJ = 25°C. RADJ = 5.6K
LM2679-3.3
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 3)
(Note 4)
V
OUT
Output Voltage
V
IN = 8V to 40V, 100mA ≤ IOUT ≤ 5A
3.3
3.234/3.201
3.366/3.399
V
η
Efficiency
V
IN = 12V, ILOAD = 5A
82
%
LM2679-5.0
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 3)
(Note 4)
V
OUT
Output Voltage
V
IN = 8V to 40V, 100mA ≤ IOUT ≤ 5A
5.0
4.900/4.850
5.100/5.150
V
η
Efficiency
V
IN = 12V, ILOAD = 5A
84
%
LM2679-12
Symbol
Parameter
Conditions
Typical
Min
Max
Units
(Note 3)
(Note 4)
V
OUT
Output Voltage
V
IN = 15V to 40V, 100mA ≤ IOUT ≤ 5A
12
11.76/11.64
12.24/12.36
V
η
Efficiency
V
IN = 24V, ILOAD = 5A
92
%
LM2679-ADJ
Symbol
Parameter
Conditions
Typ
Min
Max
Units
(Note 3)
(Note 4)
V
FB
Feedback Voltage V
IN = 8V to 40V, 100mA ≤ IOUT ≤ 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
%
3
www.national.com
LM2679
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2679SDX-3.3 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2679SDX-3.3/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2679SDX-5.0 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2679SDX-5.0/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2679SDX-ADJ | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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