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參數(shù)資料
| 型號(hào)： | LM2678-ADJ |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| 中文描述： | 高效率的SIMPLE SWITCHER第5A降壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/27頁(yè) |
| 文件大?。?/td> | 459K |
| 代理商： | LM2678-ADJ |
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Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Input Supply Voltage
ON/OFF Pin Voltage
Switch Voltage to Ground
Boost Pin Voltage
Feedback Pin Voltage
Power Dissipation
ESD (Note 2)
45V
0.1V to 6V
1V to V
IN
V
SW
+ 8V
0.3V to 14V
Internally Limited
2 kV
Storage Temperature Range
Soldering Temperature
Wave
Infrared
Vapor Phase
65C to 150C
4 sec, 260C
10 sec, 240C
75 sec, 219C
Operating Ratings
Supply Voltage
Junction Temperature Range (T
J
)
8V to 40V
40C to 125C
Electrical Characteristics
range of operation, 40C to 125C. Specifications appearing in normal type apply for T
A
= T
J
= 25C.
LM2678-3.3
Limits appearing in
bold type face
apply over the entire junction temperature
Symbol
Parameter
Conditions
Typical
(Note 3)
3.3
82
Min
Max
(Note 4)
3.366/
3.399
Units
(Note 4)
3.234/
3.201
V
OUT
η
Output Voltage
Efficiency
V
IN
= 8V to 40V, 100mA
≤
I
OUT
≤
5A
V
IN
= 12V, I
LOAD
= 5A
V
%
LM2678-5.0
Symbol
Parameter
Conditions
Typical
(Note 3)
5.0
84
Min
Max
(Note 4)
5.100/
5.150
Units
(Note 4)
4.900/
4.850
V
OUT
η
Output Voltage
Efficiency
V
IN
= 8V to 40V, 100mA
≤
I
OUT
≤
5A
V
IN
= 12V, I
LOAD
= 5A
V
%
LM2678-12
Symbol
Parameter
Conditions
Typical
(Note 3)
12
92
Min
Max
(Note 4)
12.24/
12.36
Units
(Note 4)
11.76/
11.64
V
OUT
η
Output Voltage
Efficiency
V
IN
= 15V to 40V, 100mA
≤
I
OUT
≤
5A
V
IN
= 24V, I
LOAD
= 5A
V
%
LM2678-ADJ
Symbol
Parameter
Conditions
Typ
Min
Max
(Note 4)
Units
(Note 3)
(Note 4)
V
FB
Feedback
Voltage
Efficiency
V
IN
= 8V to 40V, 100mA
≤
I
OUT
≤
5A
V
OUT
Programmed for 5V
V
IN
= 12V, I
LOAD
= 5A
1.21
1.186/
1.174
1.234/
1.246
V
η
84
%
L
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2678 | SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2679S-12 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
| LM2679S-3.3 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
| LM2679S-5.0 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
| LM2679T-12 | 392 Series Industrial Potentiometer, Conductive Plastic Element, PC Terminals, 0.5 W Power Rating, 250 Ohm Resistance Value |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2678LD-12 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 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(fēng)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(fēng)格:SMD/SMT |
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