ISL8700AIBZ

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Sequencer
Number of Voltages Monitored:	4
Output:	Open Drain or Open Collector
Reset:	Active High/Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	Adjustable/Selectable
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	ISL8700

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ISL8700AIBZ PMIC - Supervisors Application Field and Working Principle

PMIC - Supervisors are simple and ubiquitous devices intended for system protection and resetting. ISL8700AIBZ is one such supervisor device, which is intended for monitoring 3.2V to 5.5V power supplies and systems in a wide range of applications. This supervisor is designed to provide precise voltage monitoring and reset functionality. It is particularly useful in low power applications.

Overview

ISL8700AIBZ is a small, single-channel, low power, non-latching supervisor that provides accurate voltage monitoring and reset functionality. The device consists of a precise voltage regulator, a high-precision voltage monitor, and a power-on reset generator. The device has two programmable outputs, one reset (nRESET) output and one power good (PWRGD) output. The reset output (nRESET) is asserted low if any one or a combination of five programmable thresholds are crossed. The power good output (PWRGD) is asserted high when the input voltage is above the power good threshold.

Applications

ISL8700AIBZ is particularly useful in low power applications such as automotive, robotics, consumer electronics, and other low power systems. The device is also suitable for industrial applications, hardware security, and communications systems. It is also suitable for use in medical systems, networking and computing, and aviation and military equipment.

Features And Benefits

ISL8700AIBZ provides several features and benefits for its users. It supports a wide range of input voltage from 3.2V to 5.5V, and its low power consumption, as well as low quiescent current, makes it ideal for battery-powered applications. Additionally, the device can accurately monitor two programmable thresholds and can be used to reset the system in an emergency. It has a minimum reset delay of 5ms, which ensures reliable operation. The device also has an active low reset output, which can be used to reset multiple ICs in the system.

Working Principle

ISL8700AIBZ works by precisely monitoring the input voltage. The device has two programmable thresholds, VR1 and VR2, which are used to determine the reset and power good status. When the input voltage drops below VR1, the device asserts the reset output (nRESET). When the input voltage crosses VR2, the device de-asserts the reset output and asserts the power good output (PWRGD). The reset output remains asserted until the input voltage is above the power good threshold for a minimum amount of time determined by the delay line.The device also includes an under-voltage protection feature, which ensures that the output voltage is not below the reset threshold. When the input voltage drops below VR1, the device will assert the reset output while simultaneously reducing the output voltage to a safe level.

Conclusion

The ISL8700AIBZ is a small, low power, single-channel supervisor intended for system protection and resetting. It provides precise voltage monitoring and reset functionality, and can be used in a wide range of applications. It supports a wide range of input voltage from 3.2V to 5.5V, and features an active low reset output and a minimum reset delay of 5ms for reliable operation. The device has two programmable thresholds, VR1 and VR2, which are used to determine the reset, power good and under voltage protection status.

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