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参数资料
| 型号： | MAX6362HUT29-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Analog IC |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | SOT-23, 6 PIN |
| 文件页数： | 10/12页 |
| 文件大小： | 174K |
| 代理商： | MAX6362HUT29-T |
MAX6361–MAX6364
SOT23, Low-Power P Supervisory Circuits
with Battery Backup
_______________________________________________________________________________________
7
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 P’s reset input starts the P in a known state. The
MAX6361–MAX6364 P 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 VCC is below the reset threshold
and for at least 150ms (tRP) after VCC 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 VCC to OUT and connect BATT to GND.
Replacing the Backup Battery
If BATT is decoupled with a 0.1F capacitor to ground,
the backup power source can be removed while VCC
remains valid without danger of triggering a reset pulse.
The device does not enter battery-backup mode when
VCC stays above the reset threshold voltage.
Negative-Going VCC Transients
These supervisors are relatively immune to short-dura-
tion, negative-going VCC transients. Resetting the P
when VCC 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 VCC
pulses, starting at VCC and ending below the reset
threshold by the magnitude indicated (reset threshold
overdrive). The graph shows the maximum pulse width
that a negative-going VCC 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 VCC transient that goes 100mV
below the reset threshold and lasts for 30s will not
trigger a reset pulse.
A 0.1F bypass capacitor mounted close to the VCC
pin provides additional transient immunity.
RESET
WDI
tRP
tWD
tWD = WATCHDOG TIMEOUT PERIOD
tRP = RESET TIMEOUT PERIOD
tWD
Figure 1. MAX6362 Watchdog Timeout Period and Reset Active Time
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6362HUT31 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6362HUT31+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 3.08V 15UA 6PIN SOT-23 - Rail/Tube |
| MAX6362HUT31+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 |
| MAX6362HUT31-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 |
| MAX6362HUT44 | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
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