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参数资料
| 型号： | LM5000-3MTCX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.7 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | TSSOP-16 |
| 文件页数： | 12/18页 |
| 文件大小： | 388K |
| 代理商： | LM5000-3MTCX/NOPB |
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 to 40V
SW Voltage
-0.3V to 80V
FB Voltage
-0.3V to 5V
COMP Voltage
-0.3V to 3V
All Other Pins
-0.3V to 7V
Maximum Junction Temperature
150°C
Power Dissipation(Note 2)
Internally Limited
Lead Temperature
216°C
Infrared (15 sec.)
235°C
ESD Susceptibility (Note 3)
Human Body Model
2kV
Machine Model
200V
Storage Temperature
65°C to +150°C
Operating Conditions
Operating Junction
Temperature Range
(Note 7)
40°C to +125°C
Supply Voltage (Note 7)
3.1V to 40V
Electrical Characteristics
Specifications in standard type face are for T
J = 25°C and those with boldface type apply over the full Operating Temperature
Range
(T
J = 40°C to +125°C) Unless otherwise specified. VIN = 12V and IL = 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 4)
Typ
(Note 5)
Max
(Note 4)
Units
I
Q
Quiescent Current
FB = 2V (Not Switching)
FS = 0V
2.0
2.5
mA
FB = 2V (Not Switching)
FS = Open
2.1
2.5
mA
V
SHDN = 0V
18
30
A
V
FB
Feedback Voltage
1.2330
1.259
1.2840
V
I
CL
Switch Current Limit
1.35
2.0
2.7
A
%V
FB/ΔVIN
Feedback Voltage Line
Regulation
3.1V
≤ V
IN ≤ 40V
0.001
0.04
%/V
I
B
FB Pin Bias Current (Note 6)
55
200
nA
BV
Output Switch Breakdown
Voltage
T
J = 25°C, ISW = 0.1A
80
V
T
J = -40°C to + 125°C, ISW =
0.5A
76
V
IN
Input Voltage Range
3.1
40
V
g
m
Error Amp Transconductance
ΔI = 5A
150
410
750
mho
A
V
Error Amp Voltage Gain
280
V/V
D
MAX
Maximum Duty Cycle
LM5000-3
FS = 0V
85
90
%
Maximum Duty Cycle
LM5000-6
FS = 0V
85
90
%
T
MIN
Minimum On Time
165
ns
f
S
Switching Frequency
LM5000-3
FS = 0V
240
300
360
kHz
FS = Open
550
700
840
Switching Frequency
LM5000-6
FS = 0V
485
600
715
FS = Open
1.055
1.3
1.545
MHz
I
SHDN
Shutdown Pin Current
V
SHDN = 0V
1
-2
A
I
L
Switch Leakage Current
V
SW = 80V
0.008
5
A
R
DSON
Switch R
DSON
I
SW = 1A
160
445
m
Th
SHDN
SHDN Threshold
Output High
0.9
0.6
V
Output Low
0.6
0.3
V
UVLO
On Threshold
2.74
2.92
3.10
V
Off Threshold
2.60
2. 77
2.96
V
OVP
V
COMP Trip
0.67
V
I
SS
Softstart Current
8
11
14
A
3
www.national.com
LM5000
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