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參數(shù)資料
| 型號(hào)： | MAX1837EUT50-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 24V Internal Switch, 100% Duty Cycle, Step-Down Converters |
| 中文描述： | 0.9 A SWITCHING REGULATOR, PDSO6 |
| 封裝： | MO-178AB, SOT-23, 6 PIN |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 394K |
| 代理商： | MAX1837EUT50-T |
M
24V Internal Switch, 100% Duty Cycle,
Step-Down Converters
4
_______________________________________________________________________________________
Typical Operating Characteristics
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
IN
= 12V,
SHDN
= IN, T
A
= +25
°
C.)
3.27
3.29
3.28
3.31
3.30
3.32
3.33
0
100
50
150
200
MAX1836EUT33
OUTPUT VOLTAGE vs. LOAD CURRENT
M
LOAD CURRENT (mA)
O
V
IN
= 5V
V
IN
= 9V to 12V
FIGURE 1
100
95
90
85
80
70
0.1
10
100
1
1000
MAX1836EUT33
EFFICIENCY vs. LOAD CURRENT
M
LOAD CURRENT (mA)
E
75
V
IN
= 9V
V
IN
= 12V
V
IN
= 5V
FIGURE 1
V
OUT
= 3.3V
3.27
3.29
3.28
3.31
3.30
3.32
3.33
0
150
200
50
100
LOAD CURRENT (mA)
250
300
350
MAX1837EUT33
OUTPUT VOLTAGE vs. LOAD CURRENT
M
O
V
IN
= 9V
V
IN
= 5V
V
IN
= 12V
FIGURE 2
100
95
90
85
80
70
0.1
10
100
1
1000
MAX1837EUT33
EFFICIENCY vs. LOAD CURRENT
M
LOAD CURRENT (mA)
E
75
V
IN
= 9V
V
IN
= 12V
V
IN
= 5V
FIGURE 2
V
OUT
= 3.3V
0
40
20
100
80
60
160
140
120
180
0
100
LOAD CURRENT (mA)
150
50
200
250
300
350
MAX1837EUT33
SWITCHING FREQUENCY vs. LOAD CURRENT
M
F
V
IN
= 9V
V
IN
= 5V
V
IN
= 12V
FIGURE 2
V
OUT
= 3.3V
3.27
3.29
3.28
3.31
3.30
3.32
3.33
0
4
8
12
16
20
24
MAX1837EUT33
OUTPUT VOLTAGE vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
O
I
OUT
= 10mA
I
OUT
= 200mA
FIGURE 2
V
= 3.3V
L1 = 47
μ
H
Note 2:
When using the shutdown input, the maximum output voltage allowed with external feedback is 5.5V. If the output voltage is
set above 5.5V, connect shutdown to the input.
Note 3:
Shutdown input minimum slew rate (rising or falling) is 10V/ms.
Note 4:
Specifications to -40
°
C are guaranteed by design, not production tested.
PARAMETER
SYMBOL
CONDITIONS
MIN
-75
0.8
-1
TYP
MAX
+75
2.4
+1
UNITS
mV
V
μA
LX Zero-Crossing Threshold
Shutdown Input Threshold
Shutdown Leakage Current
V
SHDN
I
SHDN
V
IN
= 4.5V to 24V (Note 3)
V
SHDN
= 0 or 24V
ELECTRICAL CHARACTERISTICS (continued)
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
IN
= 12V,
SHDN
= IN,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 4)
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