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参数资料
| 型号： | MAX1721EUT-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP INV SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -5.5 V |
| 输入电压： | 1.5 V ~ 5.5 V |
| 频率 - 开关： | 60kHz ~ 200kHz |
| 电流 - 输出： | 25mA |
| 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 |
SOT23, Switched-Capacitor
Voltage Inverters with Shutdown
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = +5V, SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721), C1 = C2 = C3, T A = +25°C, unless oth-
erwise noted.)
80
OUTPUT RESISTANCE
vs. INPUT VOLTAGE
450
SUPPLY CURRENT
vs. INPUT VOLTAGE
30
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
70
400
MAX1719/
MAX1721
25
350
60
300
20
50
40
MAX1719/
MAX1721
250
200
-40°C
+85°C
15
V IN = +5V
30
150
10
V IN = +3.3V
20
MAX1720
100
50
-40°C
MAX1720
5
V IN = +1.5V
10
0
+85°C
0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
70
60
INPUT VOLTAGE (V)
OUTPUT RESISTANCE
vs. TEMPERATURE
V IN = +1.5V
1000
INPUT VOLTAGE (V)
PUMP FREQUENCY
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT NOISE AND RIPPLE
MAX1720/21toc09
V OUT
50
V IN = +2V
V IN = +1.5V
V IN = +5V
MAX1719/MAX1721
MAX1719/
MAX1721
40
30
V IN = +3.3V
100
V OUT
MAX1720
20
V IN = +5V
V IN = +5V
V IN = +1.5V
MAX1720
10
-40
-15
10
35
60
85
10
-40
-15
-10
35
60
85
10 μ s/div
TEMPERATURE (°C)
MAX1720
START-UP FROM SHUTDOWN
MAX1720/21toc10
35
TEMPERATURE (°C)
MAX1720
OUTPUT CURRENT vs. CAPACITANCE
500
V IN = 3.3V, V OUT = -3.17V, I OUT = 5mA
20mV/div, AC-COUPLED
MAX1720
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
30
V IN = +4.75V, V OUT = -4.0V
450
V OUT
2V/div
25
20
V IN = +3.15V, V OUT = -2.5V
400
350
300
250
V IN = +4.75V, V OUT = -4.0V
V IN = +3.15V, V OUT = -2.5V
15
200
V SHDN
5V/div
10
5
V IN = +1.9V, V OUT = -1.5V
150
100
50
V IN = +1.9V, V OUT = -1.5V
0
0
R L = 1k ?
500 μ s/div
0
5
10 15 20 25 30 35 40 45 50
CAPACITANCE ( μ F)
0
5
10 15 20
CAPACITANCE ( μ F)
25
30
4
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