TPS3851H25EQDRBRQ1

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	170 ms Minimum
Voltage - Threshold:	2.5V
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-VDFN Exposed Pad
Supplier Device Package:	8-SON (3x3)

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TPS3851H25EQDRBRQ1 Application Field and Working PrinciplePMIC - Supervisors, or Power Management Integrated Circuits - Supervisors, are specialized chips which are tasked with ensuring that other circuits and components are functioning correctly and not generating excessive power. The TPS3851H25EQDRBRQ1 is a supervisory device, developed by Texas Instruments, to monitor various integrated circuits and systems. In this article, we will explore the application field and working principle of TPS3851H25EQDRBRQ1.Applications of TPS3851H25EQDRBRQ1The TPS3851H25EQDRBRQ1 is primarily used in the protection and monitoring of integrated circuits and systems, such as processors, FPGAs, microcontrollers and memories, which require specific levels of power. The device is primarily designed for processor and cost sensitive applications, with its small footprint and low supply current (<10 μA) enabling a cost-effective solution.The TPS3851H25EQDRBRQ1 offers several performance benefits, including: 1. Low Voltage Monitor (LVM) which offers two-level trip points for undervoltage, which can be set to 4.35 V and 3.90 V. 2. Overvoltage (OJV) protection, which can be configured as active high or active low. 3. Brown-Out protection, which disables the system when the voltage drops below a certain level. 4. Power-on reset, which ensures that all components are operating correctly upon startup.The TPS3851H25EQDRBRQ1 is available in several packages, including QFN and BGA, and provides an operating temperature range of -40°C to +85°C, making it well-suited to industrial and harsh environments.Working Principle of TPS3851H25EQDRBRQ1The TPS3851H25EQDRBRQ1 works by monitoring the voltage of the integrated circuits and systems it is attached to. The device has three main components, the voltage monitor (LVM), the overvoltage (OJV) monitor and the brown-out monitor.When the voltage monitor detects that the voltage level has dropped below a pre-determined threshold (e.g. 4.35V), the device\'s LVM output is set low and an interrupt or reset can be triggered. The OJV monitor works in a similar way, detecting when the voltage level is above a pre-determined threshold (e.g. 6V). The brown-out monitor detects when the voltage level drops below a pre-determined low threshold (e.g. 3.6V). Once the voltage level is below the brown-out threshold, the brown-out output is set low and the device is disabled. The TPS3851H25EQDRBRQ1 is also capable of generating a power-on reset (POR) output which is triggered when the power is first applied to the device. The POR output is then used to reset all of the connected devices to ensure that they are properly initialized and operating correctly. ConclusionThe TPS3851H25EQDRBRQ1 is a supervisory device developed by Texas Instruments for the protection and monitoring of various integrated circuits and systems. The device is designed for cost-sensitive applications and offers several performance benefits, including low voltage monitoring, overvoltage protection, brown-out protection and power-on reset. The device works by detecting when the voltage level is below a certain threshold and then setting the output appropriately. The device can then be used to reset or trigger an interrupt to ensure that the connected components are operating correctly.

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