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参数资料
| 型号： | TC52N3027ECTTR |
| 厂商： | Microchip Technology |
| 文件页数： | 4/10页 |
| 文件大小： | 0K |
| 描述： | IC VOLT DETECTOR DUAL-CH SOT23A5 |
| 标准包装： | 3,000 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最大 200 µs |
| 电压 - 阀值： | 2.7V，3.0V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 带卷 (TR) |
TC52
4.0
APPLICATIONS INFORMATION
4.1
Battery and Main Supply Monitor
Pin 2 (V IN1 ) acts as both the input to Voltage Detector
#1, as well as the power supply input for the chip. As
such, always assign V IN1 to monitor voltages between
1.5V and 10V. Failure to do this will result in unreliable
detector operation due to an out-of-tolerance supply
voltage. In high noise environments, it may be
necessary to install a small input bypass capacitor
(0.01 μ F to 0.1 μ F) from V IN1 to ground to minimize on-
chip power supply noise.
The circuit shown in Figure 4-1 provides both a
processor supply monitor/reset function, as well as a
low battery detect function. As shown, the
TC52N3330ECT (N-Channel outputs) uses Detector 2
to monitor the system power supply rail. When the
power supply is 10% below its nominal output voltage
rating, the V OUT2 output is driven and held low. When
the power supply voltage is above 3.0V nominal, V OUT2
is driven to an open circuit and the combination of R 1
and C 1 provides a reset time out delay. Detector 1
monitors the voltage on the main supply battery. A low
battery condition is indicated when the battery voltage
falls to 3.3V, at which time the main processor is
interrupted to initiate a warning or system shutdown.
FIGURE 4-1:
SUPPLY MONITOR AND PROCESSOR SUPERVISOR
+3.3V
System
TC105
Step Down
3.3V
R 1
47K
+
–
6V
Battery
DC/DC
Converter
V IN2
GND
V OUT2
+C 1
– 1 μ F
+3.3V
RESET
Processor
TC52N3330ECT
R 2
47K
DS21430B-page 4
V IN1
V OUT1
INT
? 2002 Microchip Technology Inc.
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