MAX6444US44L+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitoring and Resetting
• Characteristics: Low-power, Precision, Programmable, Small form factor
• Package: US44L+T (Ultra-Small 44-pin TQFN)
• Essence: Provides voltage monitoring and resetting capabilities in a compact package
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: Programmable from 1.2V to 4.63V in 50mV steps
• Reset Timeout Period Options: Programmable from 1ms to 640ms in 1ms steps
• Quiescent Current: 3µA (typical)
• Active Supply Current: 10µA (typical)
• Reset Output: Active-Low, Open-Drain
• Power-On Reset Delay: 100ms (typical)

Detailed Pin Configuration

The MAX6444US44L+T has a total of 44 pins. The pin configuration is as follows:

1. VCC
2. GND
3. RESET
4. MR
5. RSTIN
6. RSTOUT
7. RSTOUTB
8. VDD
9. VDD
10. VDD
11. VDD
12. VDD
13. VDD
14. VDD
15. VDD
16. VDD
17. VDD
18. VDD
19. VDD
20. VDD
21. VDD
22. VDD
23. VDD
24. VDD
25. VDD
26. VDD
27. VDD
28. VDD
29. VDD
30. VDD
31. VDD
32. VDD
33. VDD
34. VDD
35. VDD
36. VDD
37. VDD
38. VDD
39. VDD
40. VDD
41. VDD
42. VDD
43. VDD
44. VDD

Functional Features

• Voltage monitoring and resetting for electronic systems
• Programmable reset threshold voltage and timeout period
• Low quiescent current for power efficiency
• Active-low, open-drain reset output for easy integration with other components
• Power-on reset delay to ensure stable operation during power-up

Advantages and Disadvantages

Advantages: - Precision voltage monitoring and resetting capabilities - Programmable options for flexibility in different applications - Low-power consumption for energy-efficient designs - Compact package size for space-constrained applications

Disadvantages: - Limited number of pins may restrict the number of external components that can be connected directly

Working Principles

The MAX6444US44L+T is designed to monitor the supply voltage of an electronic system and generate a reset signal when the voltage falls below a programmable threshold. It operates by comparing the supply voltage with the programmed threshold voltage using an internal voltage reference. When the supply voltage drops below the threshold, the reset output is activated, signaling the need for a system reset. The reset output remains active until the supply voltage rises above the threshold and a programmable timeout period elapses.

Detailed Application Field Plans

The MAX6444US44L+T is suitable for various applications where voltage monitoring and resetting are critical. Some potential application fields include:

1. Battery-Powered Devices: Ensuring proper operation and preventing data loss by monitoring battery voltage and initiating a reset when the voltage drops below a certain level.
2. Industrial Control Systems: Providing reliable reset functionality to maintain system integrity in industrial automation and control applications.
3. Medical Equipment: Safeguarding patient safety by monitoring power supply voltages in medical devices and triggering a reset if necessary.
4. Automotive Electronics: Enhancing the reliability of automotive systems by monitoring critical voltages and initiating resets in case of voltage fluctuations or failures.

Detailed and Complete Alternative Models

• MAX6445US44L+T
• MAX6446US44L+T
• MAX6447US44L+T
• MAX6448US44L+T
• MAX6449US44L+T

These alternative models offer similar voltage monitoring and resetting capabilities but may have different specifications, pin configurations, or additional features to suit specific application requirements.

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