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参数资料
| 型号： | MAX6463XR25-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Ultra-Low-Power Voltage Detectors and µP Supervisory Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | SC-70, 3 PIN |
| 文件页数： | 7/10页 |
| 文件大小： | 153K |
| 代理商： | MAX6463XR25-T |
MAX6461–MAX6466
Applications Information
Interfacing to Different Logic Voltage
Components
The MAX6463 and MAX6466’s active-low, open-drain out-
put versions can be used to interface with a different logic
voltage than VCC, as shown in Figure 1. This output struc-
ture sinks current when OUT is asserted. Connect a
pullup resistor from OUT to any supply from 0 to 6V.
Select a resistor value large enough to allow a valid logic
low (see the Electrical Characteristics) and small enough
to register a logic high while supplying all input current
and leakage paths connected to the OUT pin.
Hysteresis
The MAX6461–MAX6466 feature internal hysteresis that
creates two trip points: one for rising supply voltage
and one for falling supply voltage. The hysteresis pre-
vents the output from oscillating (chattering) when VCC
is near the voltage threshold.
Transients Immunity
These devices are relatively immune to short-duration
and falling VCC transients (glitches). The Typical
Operating Characteristics show the Maximum Transient
Duration vs. Threshold Overdrive graph, for which OUT
is not asserted. The graph shows the maximum pulse
width that a falling VCC transient typically might have
before the devices are asserted. As the amplitude of
the transient increases, the maximum allowable pulse
width decreases.
Ensuring Valid Output Down to 0V
When VCC falls below 1V, the MAX6461/MAX6464 out-
put sinking capability is reduced. Therefore, high-
impedance CMOS logic inputs connected to OUT can
drift to undetermined voltages. This presents no prob-
lem in most applications, because most circuitry is
inoperative when VCC is below 1V. In applications
where OUT must be valid down to ground, add a pull-
down resistor to ground so any stray leakage currents
flow to ground, holding OUT low. Select a resistor large
enough not to load OUT and small enough to pull OUT
to ground. For most applications, 100k
does not load
OUT and pulls OUT to ground.
Ultra-Low-Power Voltage Detectors and
P Supervisory Circuits
6
_______________________________________________________________________________________
DC/DC
CONVERTER
OUT
MAX6463
MAX6466
P
SUSPEND
VCC
OUT
IN
VCC
3.6V
Li+
Figure 1. Interfacing to Different Logic Voltage Components
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6463XR26 | 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-POWER VOLTAGE DETECTOR AN - Rail/Tube |
| MAX6463XR26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR DETECT 2.6V 3PIN SC-70 - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6463XR26+T | 功能描述:监控电路 Single uPower Voltage Monitor 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 |
| MAX6463XR26-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 |
| MAX6463XR27 | 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-POWER VOLTAGE DETECTOR AN - Rail/Tube |
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