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參數(shù)資料
| 型號： | LM2702MT-ADJ/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.6 A SWITCHING REGULATOR, 720 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 1197K |
| 代理商： | LM2702MT-ADJ/NOPB |
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
-0.3V to 12V
SW Voltage
-0.3V to 18V
FB Voltage
-0.3V to 7V
V
C Voltage
0.96V to 1.56V
Css Voltage
-0.3V to 1.2V
SWC Voltage
-0.3V to 12V
Supply Voltage, AV
IN
-0.3V to 12V
Amplifier/Buffer Input/Output
Voltage
Rail-to-Rail
Delay
GND to 1.3V
SWI
-0.3V to 30V
SWO
-0.3V to 30V
ESD Ratings
(Notes 3, 4)
Human Body Model
2kV
Machine Model
200V
Operating Conditions
Operating Temperature
40C to +125C
Storage Temperature
65C to +150C
Supply Voltage, V
IN
2.2V to 12V
SW Voltage
17.5V
Supply AV
IN
4V to 12V
SWI
2.2V to 30V
Electrical Characteristics Switching Regulator
Specifications in standard type face are for T
J = 25C and those with boldface type apply over the full Operating Tempera-
ture Range (T
J = 40C to +125C). Unless otherwise specified, VIN =2.2V and AVIN = 8V, RCOM =RGAMMA =50
,C
COM =
C
GAMMA = 1nF.
Switching Regulator
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
Q
Quiescent Current
Not Switching, FB = 2V
1.6
2.3
mA
Switching, switch open, FB =
0.1V
2.6
5.2
V
FB
Feedback Voltage
1.239
1.265
1.291
V
%V
FB/
V
IN
Feedback Voltage Line
Regulation
0.01
0.1
%/V
I
CL
Switch Current Limit
V
IN = 2.7V
1.4
2
2.6
A
R
DSON
Switch R
DSON (Note 8)
V
IN = 2.7V
200
m
I
B
FB Pin Bias Current (Note 9)
60
500
nA
V
IN
Input Voltage Range
2.2
12
V
I
SS
Soft Start Current
5
12
15
A
T
SS
Internal Soft Start Ramp
Time
7
10
mS
g
m
Error Amp Transconductance
I = 5A
40
135
290
mho
A
V
Error Amp Voltage Gain
135
V/V
D
MAX
Maximum Duty Cycle
78
85
%
f
S
Switching Frequency
480
600
720
kHz
I
L
Switch Leakage Current
V
SW = 18V
0.1
20
A
UVP
On Threshold
1.79
1.92
2.05
V
Off Threshold
1.69
1.82
1.95
V
Hysteresis
100
mV
LM2702
www.national.com
5
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