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| 型号： | MAX6364LUT31+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC CIRC SUPERVISORY LP SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 150 ms |
| 电压 - 阀值： | 3.08V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 1415 (CN2011-ZH PDF) |
| 其它名称： | MAX6364LUT31+TDKR |
SOT23, Low-Power μP Supervisory Circuits
with Battery Backup
Operating Circuit, the MAX6362 monitors two supply
voltages. To monitor the secondary 5V logic or analog
supply with a 4.60V nominal programmed reset thresh-
old, choose R2 = 100k ? , and calculate R1 = 273k ? .
Reset Output
A μP’s reset input starts the μP in a known state. The
MAX6361–MAX6364 μP supervisory circuits assert a
reset to prevent code-execution errors during power-
up, power-down, and brownout conditions. RESET is
guaranteed to be a logic low or high depending on the
device chosen (see Ordering Information). RESET or
RESET asserts when V CC is below the reset threshold
and for at least 150ms (t RP ) after V CC rises above the
reset threshold. RESET or RESET also asserts when MR
is low (MAX6361) and when RESET IN is less than
1.235V (MAX6364). The MAX6362 watchdog function
will cause RESET (or RESET ) to assert in pulses follow-
ing a watchdog timeout (Figure 1).
Applications Information
Operation Without a Backup
Power Source
The MAX6361–MAX6364 were designed for battery-
backed applications. If a backup battery is not used,
connect V CC to OUT and connect BATT to GND.
Replacing the Backup Battery
If BATT is decoupled with a 0.1μF capacitor to ground,
the backup power source can be removed while V CC
remains valid without danger of triggering a reset pulse.
The device does not enter battery-backup mode when
V CC stays above the reset threshold voltage.
Negative-Going V CC Transients
These supervisors are relatively immune to short-dura-
tion, negative-going V CC transients. Resetting the μP
when V CC experiences only small glitches is usually
not desirable.
The Typical Operating Characteristics section shows a
graph of Maximum Transient Duration vs. Reset
Threshold Overdrive for which reset is not asserted.
The graph was produced using negative-going V CC
pulses, starting at V CC and ending below the reset
threshold by the magnitude indicated (reset threshold
overdrive). The graph shows the maximum pulse width
that a negative-going V CC transient can typically have
without triggering a reset pulse. As the amplitude of the
transient increases (i.e., goes further below the reset
threshold), the maximum allowable pulse width
decreases. Typically, a V CC transient that goes 100mV
below the reset threshold and lasts for 30μs will not
trigger a reset pulse.
A 0.1μF bypass capacitor mounted close to the V CC
pin provides additional transient immunity.
WDI
t RP
t WD
RESET
t WD = WATCHDOG TIMEOUT PERIOD
t RP = RESET TIMEOUT PERIOD
Figure 1. MAX6362 Watchdog Timeout Period and Reset Active Time
t WD
t RP
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6364LUT44 | 制造商:Maxim Integrated Products 功能描述:SOT23 LOW-POWER UP SUPERVISORY CIR - Cut Tape Product |
| MAX6364LUT44-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 |
| MAX6364LUT46 | 制造商:Maxim Integrated Products 功能描述:SOT23, LOW-POWER UP SUPERVISORY CIRCUIT WITH - Cut Tape Product |
| MAX6364LUT46+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 4.63V 15UA 6PIN SOT-23 - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6364LUT46+T | 功能描述:监控电路 Low-Power MPU Supervisor 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 |
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