參數(shù)資料
型號： LM2700MTX-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
中文描述： 4.3 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO14
封裝： TSSOP-14
文件頁數(shù)： 4/17頁
文件大?。?/td> 478K
代理商： LM2700MTX-ADJ
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
V
IN
SW Voltage
FB Voltage
V
C
Voltage
SHDN Voltage (Note 1)
FSLCT (Note 1)
Maximum Junction Temperature
Power Dissipation(Note 3)
Lead Temperature
Vapor Phase (60 sec.)
12V
18V
7V
0.965V
≤
V
C
≤
1.565V
7V
12V
150C
Internally Limited
300C
215C
Infrared (15 sec.)
ESD Susceptibility (Note 4)
Human Body Model
Machine Model
220C
2kV
200V
Operating Conditions
Operating Junction
Temperature Range
(Note 5)
Storage Temperature
Supply Voltage
SW Voltage
40C to +125C
65C to +150C
2.2V to 12V
17.5V
Electrical Characteristics
Specifications in standard type face are for T
= 25C and those with
boldface type
apply over the full
Operating Tempera-
ture Range
(T
J
= 40C to +125C) Unless otherwise specified. V
IN
=2.2V and I
L
= 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 6)
Max
(Note 5)
Units
I
Q
Quiescent Current
FB = 2.2V (Not Switching)
FSLCT = 0V
FB = 2.2V (Not Switching)
FSLCT = V
IN
V
SHDN
= 0V
1.2
2
mA
1.3
2
mA
5
20
μA
V
A
%/V
V
FB
I
CL
(Note 7)
%V
FB
/
V
IN
Feedback Voltage
Switch Current Limit
Feedback Voltage Line
Regulation
FB Pin Bias Current
(Note 9)
Input Voltage Range
Error Amp Transconductance
I = 5μA
Error Amp Voltage Gain
Maximum Duty Cycle
Minimum Duty Cycle
1.2285
2.55
1.26
3.6
0.02
1.2915
4.3
0.07
V
IN
= 2.7V (Note 8)
2.2V
≤
V
IN
≤
12.0V
I
B
0.5
40
nA
V
IN
g
m
A
V
D
MAX
D
MIN
2.2
40
12
290
V
155
135
85
15
30
600
1.25
0.008
0.5
0.02
80
0.6
0.6
2.05
1.95
150
45
μmho
V/V
%
FSLCT = Ground
FSLCT = Ground
FSLCT = V
IN
FSLCT = Ground
FSLCT = V
IN
V
SHDN
= V
IN
V
SHDN
= 0V
V
SW
= 18V
V
IN
= 2.7V, I
SW
= 2A
Output High
Output Low
78
%
f
S
Switching Frequency
480
1
720
1.5
1
1
20
150
kHz
MHz
I
SHDN
Shutdown Pin Current
μA
I
L
R
DSON
Th
SHDN
Switch Leakage Current
Switch R
DSON
(Note 10)
SHDN Threshold
μA
m
V
V
V
V
0.9
0.3
2.2
2.1
UVP
On Threshold
Off Threshold
Thermal Resistance
(Note 11)
1.95
1.85
θ
JA
TSSOP, package only
LLP, package only
C/W
Note 1:
This voltage should never exceed V
IN
.
Note 2:
Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to
be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
L
www.national.com
4
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參數(shù)描述
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LM2700Q 制造商:TI 制造商全稱:Texas Instruments 功能描述:600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
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