MAX16125WTDA00+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Monitor
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	0.9 ms Minimum
Voltage - Threshold:	--
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	6-WFBGA, WLBGA
Supplier Device Package:	6-WLP (1.24x0.84)
Base Part Number:	MAX16125

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Introduction

The MAX16125WTDA00+T is a multipurpose supervisor with advanced features for monitoring power supplies. It is designed to provide accurate and repeatable power-up and power-down sequencing for multiple voltage rails in a system. It provides treshold-level detection circuits for precision monitoring of main supply lines, dual reset outputs (active high and active low) for controlling system reset sequancies, and accurate supply line Power-fail detection timing for providing the best protection for a system. In this article, we will discuss the working principle of the MAX16125WTDA00+T supervisor, its application field and the advantages of using it over other supervisors.

Working Principle

The MAX16125WTDA00+T comes with three functions: 1.Power-up sequencing: This function enables the start-up of a system in a controlled sequence, by allowing the supervisor to power up each voltage rail in the system in a predetermined order.2.Current regulation: This ensures that each voltage rail is regulated to a desired current/voltage level.3. Power failure detection: This secures the system by detecting any sudden power drops in the system.It consists of two main blocks: the control block and the sequencing block. The sequencing block provides two reset outputs (active high and active low) for controlling power up and power down sequencing of multiple voltage rails. The control block consists of the two comparators (CB1 and CB2) and the associated reference voltage source. The two comparators sense the bus voltage level at the open drain output nodes and compare it with the reference. If the bus voltage is higher than the reference voltage, then the low voltage reset output (active low) (LOR) is asserted. If the bus voltage is lower than the reference voltage then the high voltage reset output (active high) (HVOR) is asserted. The MAX16125WTDA00+T supervisor also provides an alternative reset input (RESET). This signal is used as an override signal. When the reset input is asserted, both the HVOR and LOR outputs are de-asserted and the power sequencing of the system is stopped.

Application Field

The MAX16125WTDA00+T supervisor is primarily used in automotive and industrial applications. It is well-suited for use in power-hungry applications such as those found in motor-vehicles, factory automation and datacenters. The supervisor is often used to provide accurate and reliable power-up and power-down sequencing of multiple voltage rails with different current and voltage levels, as well as providing reliable protection against sudden power drops.The supervisor is also popularly used as a watchdog timer. In this function, the supervisor is used to periodically send a "heartbeat" signal to the system, to ensure that the system is running properly. If the signal is not received within a predetermined time period, then the supervisor will reset the system.

Advantages

The MAX16125WTDA00+T supervisor offers several advantages over other supervisors: 1. The power-up and power-down sequencing of multiple voltage rails can be accomplished with ease, eliminating the need for complex power sequencing ICs. 2. It provides reliable protection against sudden power drops, by detecting and automatically resetting the system when a drop in power occurs.3. The watchdog timer function provided by the supervisor is reliable and easy to use, increasing system reliability and reducing repair times.4. The supervisor is relatively low-cost, making it ideal for applications where budget is a concern.

Conclusion

The MAX16125WTDA00+T supervisor is a multipurpose SCSI device, providing accurate and reliable power-up and power-down sequencing of multiple voltage rails in a system, as well as protection against sudden power drops. It is primarily used in automotive and industrial applications, providing a reliable, low-cost solution for applications requiring accurate power regulation. The supervisor also offers a watchdog timer, providing reliable monitoring of system health. Overall, the MAX16125WTDA00+T is a great choice for any application requiring reliable and accurate power sequencing and protection.

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