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ADM6821

Features: Precision low voltage monitoring 9 reset threshold options: 1.58 V to 4.63 V 140 ms (min) reset timeout Watchdog timer with 1.6 sec timeout Manual reset input Reset output stages Push-pull active-low Open-drain active-low Push-pull active-high Low power consumption (7 A) Guaranteed rese...

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SeekIC No. : 004275940 Detail

ADM6821: Features: Precision low voltage monitoring 9 reset threshold options: 1.58 V to 4.63 V 140 ms (min) reset timeout Watchdog timer with 1.6 sec timeout Manual reset input Reset output stages Push-pul...

ADM6821 Data Sheet

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Part Number:
ADM6821
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/26

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Product Details

Description



Features:

Precision low voltage monitoring
9 reset threshold options: 1.58 V to 4.63 V
140 ms (min) reset timeout
Watchdog timer with 1.6 sec timeout
Manual reset input
Reset output stages
   Push-pull active-low
   Open-drain active-low
   Push-pull active-high
Low power consumption (7 A)
Guaranteed reset output valid to VCC = 1 V
Power supply glitch immunity
Specified from −40°C to +125°C
5-lead SOT-23 package 


Application

Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment


Pinout

Connection Diagram


Specifications

Parameter Rating
VCC
Output Current (RESET, RESET)
Operating Temperature Range
Storage Temperature Range
JA Thermal Impedance
Soldering Temperature
   Sn/Pb
   Pb-Free
 −0.3 V to +6 V
20 mA
−40°C to +125°C
−65°C to +150°C
170°C/W

240°C, 30 sec
260°C, 40 sec



Description

The ADM682x are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button through a manual reset input. The ADM682x parts feature different combinations of watchdog input and manual reset input and output stage configurations, as shown in Table 1.

Each ADM682x part is available in nine reset threshold options, ranging from 1.58 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (min) and 1.6 sec (typ), respectively.

The ADM682x are available in 5-lead SOT-23 packages and typically consume only 7 A, making them suitable for use in low power, portable applications.




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