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参数资料
| 型号： | MAX1837EUT50+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V 0.25A SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 4.5 V ~ 24 V |
| 电流 - 输出： | 250mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-6 |
24V Internal Switch, 100% Duty Cycle,
Step-Down Converters
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)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LX Zero-Crossing Threshold
-75
+75
mV
Shutdown Input Threshold
Shutdown Leakage Current
V SHDN
I SHDN
V IN = 4.5V to 24V (Note 3)
V SHDN = 0 or 24V
0.8
-1
2.4
+1
V
μA
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.
Typical Operating Characteristics
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V IN = 12V, SHDN = IN, T A = +25°C.)
MAX1836EUT33
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1836EUT33
EFFICIENCY vs. LOAD CURRENT
MAX1837EUT33
OUTPUT VOLTAGE vs. LOAD CURRENT
3.33
3.32
FIGURE 1
V IN = 5V
100
95
FIGURE 1
V OUT = 3.3V
V IN = 5V
V IN = 9V
3.33
3.32
FIGURE 2
3.31
90
3.31
3.30
3.29
V IN = 9V to 12V
85
80
3.30
3.29
V IN = 9V
V IN = 5V
V IN = 12V
V IN = 12V
3.28
3.27
75
70
3.28
3.27
0
50
100
150
200
0.1
1
10
100
1000
0
50
100
150
200
250
300
350
LOAD CURRENT (mA)
MAX1837EUT33
EFFICIENCY vs. LOAD CURRENT
LOAD CURRENT (mA)
MAX1837EUT33
SWITCHING FREQUENCY vs. LOAD CURRENT
LOAD CURRENT (mA)
MAX1837EUT33
OUTPUT VOLTAGE vs. INPUT VOLTAGE
100
95
FIGURE 2
V OUT = 3.3V
180
160
FIGURE 2
V OUT = 3.3V
V IN = 9V
3.33
3.32
I OUT = 10mA
140
90
85
V IN = 5V
V IN = 9V
120
100
80
V IN = 12V
3.31
3.30
I OUT = 200mA
80
60
3.29
75
70
V IN = 12V
40
20
0
V IN = 5V
3.28
3.27
FIGURE 2
V OUT = 3.3V
L1 = 47 μ H
0.1
1
10
100
1000
0
50
100
150
200
250
300
350
0
4
8
12
16
20
24
LOAD CURRENT (mA)
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
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