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參數(shù)資料
| 型號： | LM2710MT-ADJ/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.4 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 853K |
| 代理商： | LM2710MT-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 7.5V
V
SW Voltage
-0.3V to 18V
FB Voltage
-0.3V to 7V
V
C Voltage
0.965V to 1.565V
SHDN Voltage
-0.3V to V
IN
FSLCT Voltage
AGND to V
IN
Supply Voltage, Vs+
-0.3V to 12V
Buffer Input Voltage
Rail-to-Rail
Buffer Output Voltage
Rail-to-Rail
ESD Ratings
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 7.5V
V
SW Voltage
17V
Supply Vcom Buffer, Vs+
4V to 12V
Supply Gamma Buffer, Vs+
4V to 12V
Electrical Characteristics
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 Vs+ = 8V, Rox = 50
, Cox = 1nF.
Switching Regulator
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
Q
Quiescent Current
Not Switching, FSCLT = 0V
1.6
2
mA
Not Switching, FSCLT = V
IN
1.65
2.2
Switching, FSCLT = 0V
2.5
3
Switching, FSCLT = V
IN
3.4
4
Shutdown mode
6
15
A
V
FB
Feedback Voltage
1.239
1.265
1.291
V
%V
FB/
V
IN
Feedback Voltage Line
Regulation
0.03
0.05
%/V
I
CL
Switch Current Limit
V
IN = 2.5V, VOUT =8V
1.4
A
R
DSON
Switch R
DSON (Note 7)
V
IN = 2.7V
170
m
I
B
FB Pin Bias Current(Note 8)
30
90
nA
V
IN
Input Voltage Range
2.2
7.5
V
I
SS
Soft Start Current
5
11
15
A
T
SS
Internal Soft Start Ramp
Time
FSLCT = 0V
6.7
10
mS
g
m
Error Amp Transconductance
I = 5A
60
135
250
mho
A
V
Error Amp Voltage Gain
135
V/V
D
MAX
Maximum Duty Cycle
78
85
%
f
S
Switching Frequency
FSLCT = 0V
500
600
700
kHz
FSLCT = V
IN
0.9
1.25
1.5
MHz
I
L
Switch Leakage Current
V
SW = 17V
0.185
20
A
SHDN
SHDN Threshold
Output High
0.85
0.6
V
Output Low
0.6
0.3
V
I
SHDN
Shutdown Pin Current
0V
≤ SHDN ≤ V
IN
0.5
1
A
UVP
On Threshold
1.8
1.9
2
V
Off Threshold
1.7
1.8
1.9
V
Hysteresis
100
mV
LM2710
www.national.com
5
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