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MB3771

Features: • Precision voltage detection (VSA = 4.2 V ± 2.5 %)• User selectable threshold level with hysterisis (VSB = 1.23 V ± 1.5 %)• Monitors the voltage of one or two power supplies (5 V and an arbitrary voltage, >1.23 V)• Usable as over voltage detector• Low vo...

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MB3771: Features: • Precision voltage detection (VSA = 4.2 V ± 2.5 %)• User selectable threshold level with hysterisis (VSB = 1.23 V ± 1.5 %)• Monitors the voltage of one or two power supp...

MB3771 Data Sheet

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Part Number:
MB3771
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: 2024/11/23

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Product Details

Description



Features:

• Precision voltage detection (VSA = 4.2 V ± 2.5 %)
• User selectable threshold level with hysterisis (VSB = 1.23 V ± 1.5 %)
• Monitors the voltage of one or two power supplies (5 V and an arbitrary voltage, >1.23 V)
• Usable as over voltage detector
• Low voltage output for reset signal (VCC = 0.8 V typ.)
• Minimal number of external components (one capacitor min.)
• Low power dissipation (ICC = 0.35 mA typ., VCC = 5 V)
• Detection threshold voltage has hyst


Pinout

Connection Diagram


Specifications

Parameter Symbol Rating Unit
Min. Max.
Power supply voltage VCC 0.3 +20 V
Input voltage VSA 0.3 VCC + 0.3 ( < +20) V
VSB 0.3 +20 V
VSC -0.3 +20 V
Power dissipation PD - 200 (Ta85 °C) mW
Storage temperature Tstg 55 +125 °C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
                  temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.


Description

The Fujitsu MB3771 is designed to monitor the voltage level of one or two power supplies (+5 V and an arbitrary voltage) in a microprocessor circuit, memory board in large-size computer, for example.

If the circuit's power supply deviates more than a specified amount, then the MB3771 generates a reset signal to the microprocessor. Thus, the computer data is protected from accidental erasure.

Using the MB3771 requires few external components. To monitor only a +5 V supply, the MB3771 requires the connection of one external capacitor. The level of an arbitrary detection voltage is determined by two external resistors. The MB3771 is available in an 8-pin Dual In-Line, Single In-Line Package or space saving Flat Package.




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