Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	9 Selectable Threshold Combinations
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-DFN (3x2)
Base Part Number:	LTC2904

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PMIC - Supervisors: LTC2904IDDB#TRPBF Overview

PMIC stands for Power Management Integrated Circuit, and Supervisors are special components which provide the power supply sequencing signals required for the proper power-up and power-down of integrated circuits. The LTC2904IDDB#TRPBF is an advanced, high performance Power Manager IC with integrated Supervisors that provides a flexible, low-cost solution for multiple power supply sequencing and power control applications.

Features of LTC2904IDDB#TRPBF

The major features of the LTC2904IDDB#TRPBF include: -Supports up to 12 power supplies -4 Supply Sequencing Outputs with Programmable Delay -Two Analog Outputs for Margining and Current Measurement -Regulated Logic Outputs from 1.5V to 5V -Comprehensive Protection Features -SPI and I2C compatible Interface

Application and Working Principle of LTC2904IDDB#TRPBF

The LTC2904IDDB#TRPBF is intended primarily for use in systems utilizing multiple power supplies. It provides a flexible platform for power supply sequencing and power control applications, such as those found in PC system, telecoms and other equipment. The LTC2904IDDB#TRPBF operates on a single supply, typically between 2.7V and 5.5V.It is capable of controlling up to 12 power supplies and each supply has its own voltage supervisory circuit, enabling the system to be monitored for over or undervoltage conditions. The LTC2904IDDB#TRPBF includes four programmable supply sequencing output stages that can generate variable timing, rail-to-rail ramped tracking sequences or simple turn-on/turn-off operations.A built-in over-voltage protection of up to 7V can be configured on each supply, and additional features include power-good signal generation capabilities, brownout detection, power tracking and margining, and optional current sensing. The LTC2904IDDB#TRPBF features an SPI/I2C compatible interface which allows the system to control the power sequencing stages, set the monitor/protection thresholds, and control the status of the device. This interface also lets the system read back various system parameters, such as the current supply voltage, current sensing information, and the system power status.

Conclusion

The LTC2904IDDB#TRPBF is a powerful, highly integrated power manager IC that is ideal for multiple power supply sequencing applications. It offers a cost-effective solution for powering and monitoring multiple supplies with its integrated voltage supervisors, analog outputs, power-good signal generation, and programmable sequencing outputs. Additionally, the LTC2904IDDB#TRPBF provides flexible system control via its SPI/I2C compatible interface.

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