
Allicdata Part #: | MAX693ACUE+-ND |
Manufacturer Part#: |
MAX693ACUE+ |
Price: | $ 13.22 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC SUPERVISOR MPU 16-TSSOP |
More Detail: | Supervisor Push-Pull, Push-Pull 1 Channel 16-TSSOP |
DataSheet: | ![]() |
Quantity: | 192 |
1 +: | $ 12.01410 |
10 +: | $ 11.41370 |
25 +: | $ 8.32230 |
50 +: | $ 7.90622 |
100 +: | $ 5.59037 |
250 +: | $ 5.50229 |
Series: | -- |
Packaging: | Tube |
Part Status: | Active |
Type: | Battery Backup Circuit |
Number of Voltages Monitored: | 1 |
Output: | Push-Pull, Push-Pull |
Reset: | Active High/Active Low |
Reset Timeout: | 140 ms Minimum |
Voltage - Threshold: | 4.4V |
Operating Temperature: | 0°C ~ 70°C (TA) |
Mounting Type: | Surface Mount |
Package / Case: | 16-TSSOP (0.173", 4.40mm Width) |
Supplier Device Package: | 16-TSSOP |
Base Part Number: | MAX693 |
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Power management integrated circuits (PMICs) play a crucial role in protecting circuits and ensuring reliable operation of systems. The MAX693ACUE+ is a PMIC supervisor specifically designed to provide circuit protection, reset and power-on sequencing, and clock monitoring to protect digital systems against damage. This article will discuss the application fields and working principles of the MAX693ACUE+.
Application Field
The MAX693ACUE+ provides a highly integrated solution for battery-powered systems, including enterprise-focused systems, notebook computers, tablets, and portable devices. It is an ultra low-power CMOS reset, clock, and power-on sequencing supervisor that contains all the necessary functions for advanced system protection, including brownout protection, supply voltage monitoring, watchdogs, and adjustable reset. It offers additional features, such as overvoltage protection, programmable reset timing, manual reset initiation, and clock output.
The IC is designed to operate from a single-cell or dual-cell NiMH/NiCd, two or three Li+ cells, or a 3.3V or 5V power-supply voltage. The IC also contains an integrated high-speed switching regulator for powering audio codecs, system USB transceiver ICs, and other peripherals. The voltage-tracking system provides a direct connection to the core processor.
Working Principle
The MAX693ACUE+ utilizes a watchdog timer to monitor the health of a digital system. If the system fails to execute a reset command within the specified watchdog time, the IC generates a reset signal. The watchdog timeout period is adjustable via an external resistor. The reset signal can be used to initiate power-on sequencing via the reset circuitry. This ensures that the system only receives power when the source voltage is within a safe range.
The device also contains brownout protection circuitry that monitors the power supply voltage. If the voltage falls below the safety threshold, an interrupt is issued to warn the system of a potential problem. Additionally, the MAX693ACUE+ supports overvoltage protection. If the power supply voltage exceeds the factory-set voltage, an interrupt is issued, and the system is reset if the voltage does not return to a safe level within a specified amount of time.
The device is designed to reset any system when the supply voltage drops below a safe level. The reset signal is adjustable via an external resistor. Furthermore, the IC comes with a programmable reset timing feature that enables the user to modify the reset timeout and delay settings. This helps ensure that the system is properly reset at the right time.
The MAX693ACUE+ includes a clock generator that provides the system with the necessary clock signals and eliminates the need for an external oscillator. The clock generator supports a variety of frequencies, including 3.6864MHz, 4MHz, and 10MHz. This feature helps reduce the component count and system costs.
The MAX693ACUE+ can also be configured for manual reset initiation. When the reset initiation pin is triggered, a reset signal is generated and the system is reset. This feature provides added system protection and enables the user to manually reset the system if necessary.
Conclusion
The MAX693ACUE+ is an ultra low power CMOS reset, clock, and power-on sequencing supervisor that provides circuit protection, reset and power-on sequencing, and clock monitoring to protect digital systems against damage. The device is specifically designed to meet the needs of battery-powered systems, such as enterprise-focused systems, notebook computers, tablets, and portable devices. It is highly integrated and comes with a variety of features, including brownout protection, overvoltage protection, programmable reset timing, manual reset initiation, and a clock generator. It is an excellent choice for a variety of digital systems.
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