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LM2698 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM2698
Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 1.35A Boost Regulator
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LM2698 bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
−0.3V
≤ V
IN ≤ 12V
SW Voltage
−0.3V
≤ V
SW ≤ 18V
FB Voltage
−0.3V
≤ V
FB ≤ 7V
V
C Voltage
0.965 < V
C < 1.565
SHDN Voltage
(Note 2)
−0.3V
≤ V
SHDN ≤ 7V
FSLCT
(Note 2)
−0.3V
≤ V
FSLCT ≤ 12V
Maximum Junction
Temperature
150˚C
Power Dissipation (Note 3)
Internally Limited
Lead Temperature
300˚C
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
ESD Susceptibility
(Note 4)
Human Body Model
(Note 5)
2kV
Machine Model
200V
Operating Conditions
Operating Junction
Temperature Range
(Note 6)
−40˚C to +125˚C
Storage Temperature
−65˚C to +150˚C
Supply Voltage
2.2V to 12V
SW Voltage
0
≤ V
SW ≤ 17.5V
Electrical Characteristics
Specifications in standard type face are for T
J = 25˚C and those with boldface type apply over the full Operating Tempera-
ture Range (T
J = −40˚C to +125˚C)Unless otherwise specified. VIN =2.2V and IL = 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 7)
Max
(Note 6)
Units
I
Q
Quiescent Current
FB = 0V (Not Switching)
1.3
2.0
mA
V
SHDN =0V
5
10
µA
V
FB
Feedback Voltage
1.2285
1.26
1.2915
V
I
CL
Switch Current Limit
V
IN = 2.7V (Note 8)
1.35
1.9
2.4
A
%V
FB/∆VIN
Feedback Voltage Line
Regulation
2.2V
≤ V
IN ≤ 12.0V
0.013
0.1
%/V
I
B
FB Pin Bias Current
(Note 9)
0.5
20
nA
V
IN
Input Voltage Range
2.2
12
V
g
m
Error Amp Transconductance
∆I = 5µA
40
135
290
µmho
A
V
Error Amp Voltage Gain
120
V/V
D
MAX
Maximum Duty Cycle
FSLCT = Ground
78
85
%
D
MIN
Minimum Duty Cycle
FSLCT = Ground
15
%
FSLCT = V
IN
30
f
S
Switching Frequency
FSLCT = Ground
480
600
720
kHz
FSLCT = V
IN
1
1.25
1.5
MHz
I
SHDN
Shutdown Pin Current
V
SHDN =VIN
0.01
0.1
µA
V
SHDN =0V
−0.5
-1
I
L
Switch Leakage Current
V
SW = 18V
0.01
3
µA
R
DS(ON)
Switch R
DS(ON)
V
IN = 2.7V, ISW = 1A
0.2
0.4
Ω
TH
SHDN
SHDN Threshold Voltage
Output High
0.6
0.9
V
Output Low
0.3
0.6
V
UVP
On Threshold
1.95
2.05
2.2
V
Off Threshold
1.85
1.95
2.1
V
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