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参数资料
| 型号： | MAX6419UK35+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC RESET MPU LOW PWR SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 高有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 3.5V，可调 |
| 工作温度： | -40°C ~ 125°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) |
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
V MON_TH
V CC
V CC
MAX6420
ONLY
R1
1.26V
LASER-TRIMMED
RESISTORS
RESET
CIRCUITRY
(RESET)
RESET
R L
μ P
R2
RESET IN
GND
SRT
MAX6418
MAX6419
MAX6420
C SRT
Figure 4. MAX6418/MAX6419/MAX6420 Monitoring Two Voltages
Dual-Voltage Monitoring
(MAX6418/MAX6419/MAX6420)
The MAX6418/MAX6419/MAX6420 contain both facto-
ry-trimmed threshold voltages and an adjustable reset
threshold input, allowing the monitoring of two voltages,
V CC and V MON_TH (see Figure 4). Reset is asserted
when either of the voltages falls below its respective
threshold voltage.
Application Information
Selecting a Reset Capacitor
The reset timeout period is adjustable to accommodate
a variety of μP applications. Adjust the reset timeout
period (t RP ) by connecting a capacitor (C SRT ) between
SRT and ground. Calculate the reset timeout capacitor
as follows:
C SRT = (t RP - 275μs) / (2.71 10 6 )
where t RP is in seconds and C SRT is in Farads
Maxim Integrated
The reset delay time is set by a current/capacitor-con-
trolled ramp compared to an internal 0.65V reference.
An internal 240nA ramp current source charges the
external capacitor. The charge to the capacitor is
cleared when a reset condition is detected. Once the
reset condition is removed, the voltage on the capacitor
ramps according to the formula: dV/dt = I/C. The C SRT
capacitor must ramp to 0.65V to deassert the reset.
C SRT must be a low-leakage (<10nA) type capacitor,
ceramic is recommended.
Operating as a Voltage Detector
The MAX6412–MAX6420 can be operated in a voltage
detector mode by leaving SRT unconnected. The reset
delay times for V CC rising above or falling below the
threshold are not significantly different. The reset output
is deasserted smoothly without false pulses.
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6419UK36 | 制造商:Maxim Integrated Products 功能描述:LOW-PWR SNGL/DUAL-VLTAGE MICROPROC - Rail/Tube |
| MAX6419UK36+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 3.6V/ADJV 2.7UA 5PIN SOT-23 - Rail/Tube |
| MAX6419UK36+T | 功能描述:监控电路 Dual uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6419UK36-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6419UK37 | 制造商:Maxim Integrated Products 功能描述:LOW-PWR SNGL/DUAL-VLTAGE MICROPROC - Rail/Tube |
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