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參數(shù)資料
| 型號： | LM2678S-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.0V, SOTiny, 0.8-Ohms Dual SPDT Analog Switch with -1.0V to 3.3V Operating Range |
| 中文描述： | 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7 |
| 封裝： | TO-263, 7 PIN |
| 文件頁數(shù)： | 4/27頁 |
| 文件大?。?/td> | 459K |
| 代理商： | LM2678S-5.0 |
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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, 40C to 125C. Specifica-
tions appearing in normal type apply for T
A
= T
J
= 25C. Unless otherwise specified V
IN
=12V for the 3.3V, 5V and Adjustable
versions and V
IN
=24V for the 12V version.
Symbol
Parameter
Conditions
DEVICE PARAMETERS
I
Q
Quiescent
Current
V
FEEDBACK
= 8V
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK
= 15V
For 12V Versions
I
STBY
Standby
Quiescent
Current
I
CL
Current Limit
I
L
Output Leakage
Current
V
SWITCH
= 0V
V
SWITCH
= 1V
R
DS(ON)
Switch
On-Resistance
f
O
Oscillator
Frequency
D
Duty Cycle
Maximum Duty Cycle
Minimum Duty Cycle
I
BIAS
Feedback Bias
Current
ADJ Version Only
V
ON/OFF
ON/OFF
Threshold
Voltage
I
ON/OFF
ON/OFF Input
Current
θ
JA
Thermal
Resistance
(Note 5)
θ
JA
T Package, Junction to Ambient
(Note 6)
θ
JC
T Package, Junction to Case
θ
JA
S Package, Junction to Ambient
(Note 7)
θ
JA
S Package, Junction to Ambient
(Note 8)
θ
JA
S Package, Junction to Ambient
(Note 9)
θ
JC
S Package, Junction to Case
θ
JA
SD Package, Junction to Ambient
(Note 10)
θ
JA
SD Package, Junction to Ambient
(Note 11)
Typ
Min
Max
Units
4.2
6
mA
ON/OFF Pin = 0V
50
100/
150
μA
7
6.1/
5.75
8.3/
8.75
A
V
IN
= 40V, ON/OFF Pin = 0V
16
0.12
200
15
μA
mA
I
SWITCH
= 5A
0.14/
0.225
Measured at Switch Pin
260
225
280
kHz
91
0
85
%
%
nA
V
FEEDBACK
= 1.3V
1.4
0.8
2.0
V
ON/OFF Input = 0V
20
45
μA
T Package, Junction to Ambient
65
45
2
56
C/W
35
26
2
55
++
C/W
29
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
resistor into each pin.
Note 3:
Typical values are determined with T
A
= T
J
= 25C and represent the most likely norm.
L
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2678SADJ | 制造商:Texas Instruments 功能描述: |
| LM2678S-ADJ | 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-ADJ/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 |
| LM2678SADJNOPB | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 Rail |
| LM2678SD-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 |
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