參數(shù)資料
型號(hào): LM2673LDX-12
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14
封裝: LLP-14
文件頁(yè)數(shù): 20/25頁(yè)
文件大?。?/td> 433K
代理商: LM2673LDX-12
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 =TJ = 25C. Unless otherwise specified, RADJ = 8.2K
,V
IN=12V for the 3.3V, 5V
and Adjustable 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
V
ADJ
Current Limit
Adjust Voltage
1.21
1.181/1.169
1.229/1.246
V
I
CL
Current Limit
R
ADJ = 8.2K
4.5
3.8/3.6
5.25/5.4
A
I
L
Output Leakage
Current
V
IN = 40V, Softstart Pin = 0V
V
SWITCH =0V
V
SWITCH = 1V
1.0
6
1.5
15
mA
R
DS(ON)
Switch
On-Resistance
I
SWITCH = 3A
0.15
0.17/0.29
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
SFST
Softstart
Threshold
Voltage
0.63
0.53
0.74
V
I
SFST
Softstart Pin
Current
Softstart Pin = 0V
3.7
6.9
A
θ
JA
Thermal
Resistance
T Package, Junction to Ambient
65
θ
JA
T Package, Junction to Ambient
45
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to Ambient
56
C/W
θ
JA
S Package, Junction to Ambient
35
θ
JA
S Package, Junction to Ambient
26
θ
JC
S Package, Junction to Case
2
++
θ
JA
LD Package, Junction to Ambient
55
C/W
θ
JA
LD Package, Junction to Ambient
29
LM2673
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相關(guān)PDF資料
PDF描述
LM2673LD-5.0 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14
LM2673LD-12 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14
LM2673LDX-5.0 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14
LM2676LD-5.0 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
LM2676LD-3.3 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14
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