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參數(shù)資料
| 型號： | MAX653MJA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters |
| 中文描述： | 1 A SWITCHING REGULATOR, CDIP8 |
| 封裝： | CERAMIC, DIP-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 166K |
| 代理商： | MAX653MJA |
M
5V /3.3V /3V /Adjustable, High-Effic ienc y,
Low I
Q
, S tep-Down DC-DC Converters
_______________________________________________________________________________________
3
__________________________________________Typic al Operating Charac teristic s
(Circuit of Figure 3, internal feedback, L = 100μH, T
A
= +25°C, unless otherwise noted.)
100
50
10
μ
100
μ
1
EFFICIENCY vs.
OUTPUT CURRENT
60
M
OUTPUT CURRENT (A)
E
70
80
90
1m
10m
100m
L = 100
μ
H
V
+
= 9V
MAX639
MAX640
MAX653
100
50
10
μ
100
μ
EFFICIENCY vs.
OUTPUT CURRENT
60
M
OUTPUT CURRENT (A)
E
70
80
90
1m
10m
MAX639, V+ = 6V
MAX640, V+ = 4.3V
MAX653, V+ = 4V
100m
L = 470
μ
H
100
50
10
μ
100
μ
EFFICIENCY vs.
OUTPUT CURRENT
60
M
OUTPUT CURRENT (A)
E
70
80
90
1m
10m
MAX639
MAX640
MAX653
100m
L = 470
μ
H
V+ = 9V
Note 2:
Output guaranteed by correlation to measurements of device parameters (i.e., switch on-resistance, on-times, off-times, and
output voltage trip points).
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 9V for the MAX639, V+ = 5V for the MAX640/MAX653, I
LOAD
= 0mA, T
A
= T
MIN
to T
MAX
, typical values are at T
A
= +25°C,
unless otherwise noted.)
PARAMETER
V
0.4
1.2
0.001
25
1.15
0.20
MIN
TYP
0.8
MAX
mA
V
LBO
= 0.4V
UNITS
LBO Leakage Current
LBO Delay
SHDN
Threshold
SHDN
Pull-Up Current
0.1
μA
μs
V
μA
V
LBO
= 11.5V
50mV overdrive
2.5
2.8
1.0
30.0
15.0
0.80
0.10
2.00
0.40
SHDN
= 0V
V
μA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
MAX639
MAX640/MAX653
LX Switch Leakage
0.003
VFB Bias Current
VFB Dual-Mode Trip Point
4.0
50
1.28
1.28
2
1.28
1.28
2.5
nA
mV
LX Switch On-Resistance
VFB Threshold
1.26
1.24
1.30
1.32
10
1.30
1.32
LBI Bias Current
LBI Threshold
1.26
1.24
0.8
nA
LBO Sink Current
CONDITIONS
V+ = 6V, T
A
= T
MIN
to T
MAX
, MAX639
V+ = 4V, T
A
= T
MIN
to T
MAX
, MAX640/MAX653
V+ = 11.5V, V
LX
= 0V
VFB = 2V
V+ = 9V, T
A
= +25°C, MAX639/MAX640/MAX653
MAX6_ _C
MAX6_ _E/M
V
LBI
= 2V
MAX6_ _C
MAX6_ _E/M
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