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參數(shù)資料
| 型號(hào)： | LM2676SDX-12/NOPB |
| 廠(chǎng)商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| 封裝： | LLP-14 |
| 文件頁(yè)數(shù)： | 21/26頁(yè) |
| 文件大?。?/td> | 671K |
| 代理商： | LM2676SDX-12/NOPB |
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All Output Voltage Versions
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. Unless otherwise specified VIN=12V for the 3.3V, 5V and Ad-
justable versions and V
IN=24V for the 12V version.
Symbol
Parameter
Conditions
Typ
Min
Max
Units
DEVICE PARAMETERS
I
Q
Quiescent Current V
FEEDBACK = 8V
4.2
6
mA
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK = 15V
For 12V Versions
I
STBY
Standby Quiescent
Current
ON/OFF Pin = 0V
50
100/150
μA
I
CL
Current Limit
4.5
3.8/3.6
5.25/5.4
A
I
L
Output Leakage
Current
V
IN = 40V, ON/OFF Pin = 0V
V
SWITCH = 0V
V
SWITCH = 1V
16
200
15
μA
mA
R
DS(ON)
Switch On-
Resistance
I
SWITCH = 3A
0.15
0.17/0.29
Ω
f
O
Oscillator
Frequency
Measured at Switch Pin
260
225
280
kHz
D
Duty Cycle
Maximum Duty Cycle
91
%
Minimum Duty Cycle
0
%
I
BIAS
Feedback Bias
Current
V
FEEDBACK = 1.3V
ADJ Version Only
85
nA
V
ON/OFF
Threshold Voltage
1.4
0.8
2.0
V
I
ON/OFF
ON/OFF Input
Current
ON/OFF Input = 0V
20
45
μA
θ
JA
Thermal
Resistance
T Package, Junction to Ambient
65
(Note 5)
θ
JA
T Package, Junction to Ambient
45
(Note 6)
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to Ambient
56
°C/W
(Note 7)
θ
JA
S Package, Junction to Ambient
35
(Note 8)
θ
JA
S Package, Junction to Ambient
26
(Note 9)
θ
JC
S Package, Junction to Case
2
++
θ
JA
SD Package, Junction to Ambient
55
°C/W
(Note 10)
θ
JA
SD Package, Junction to Ambient
29
(Note 11)
www.national.com
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LM2676
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| LM2678LD-12 | 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
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| 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 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2676SDX-3.3 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:LM2676 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator |
| LM2676SDX-3.3/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 |
| LM2676SDX-3.3-NOPB | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:LM2676 SIMPLE SWITCHER?? High Efficiency 3A Step-Down Voltage Regulator |
| LM2676SDX-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 |
| LM2676SDX-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 |
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