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Part Number: MB3793-45
Description: The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A rese...
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MB3793-45
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DataSheet
General Description
MB3793-45 General Description
The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems.
There is also a mask option that can detect voltages of 4.9 to 2.4 V in 0.1-V steps.
The model number is MB3793-45 corresponding to the detected voltage. The model number and package code are as shown below.
| Model No. | Package code | Detection voltage |
| MB3793-45 | 3793-7 | 4.5 V |
MB3793-45 Maximum Ratings
(Ta = +25°C)
*: The power supply voltage is based on the ground voltage (0 V).
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.
| Parameter | Symbol | Conditions | Rating | Unit | ||
| Min. | Max. | |||||
| Power supply voltage* | VCC | - | 0.3 | +7 | V | |
| Input voltage | CK1 | VCK1 | - | 0.3 | +7 | V |
| CK2 | VCK2 | - | ||||
| INH | IINH | - | ||||
| Reset output current | RESET | IOL | - | 10 | +10 | mA |
| IOH | ||||||
| Allowable loss | PD | Ta +85°C | - | 200 | 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.
MB3793-45 Features
• Precise detection of power voltage fall: ±2.5%
• Detection voltage with hysteresis
• Low power dispersion: ICC = 31 A (reference)
• Internal dual-input watchdog timer
• Watchdog-timer halt function (by inhibition pin)
• Independently-set wacthdog and reset times
• Detection voltage with hysteresis
• Low power dispersion: ICC = 31 A (reference)
• Internal dual-input watchdog timer
• Watchdog-timer halt function (by inhibition pin)
• Independently-set wacthdog and reset times
MB3793-45 Connection Diagram
MB3793-45
PDF/DataSheet Download
- Datasheet: MB3793-45
- File Size: 140231 KB
- Manufacturer: FUJITSU [Fujitsu Media Devices Limited]
- Click here to Download
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