KA75420ZBU

Supervisors Overview

The KA75420ZBU is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single-channel input voltages. It operates within a supply voltage range of 300 mV to 15 V and features specific threshold levels: an undervoltage threshold of 4.05 V and an overvoltage threshold of 4.35 V. The device utilizes a TO-92-3 package with through-hole mounting and provides an open-drain/open-collector output. It functions without manual reset or watchdog timer capabilities, drawing a typical operating current of 500 uA. The component is rated for operation between -25°C and +85°C, with a power dissipation of 200 mW.

Supervisors Feature Summary

• Provides voltage supervision with distinct undervoltage (4.05 V) and overvoltage (4.35 V) detection thresholds for a single monitored channel.
• Features an open-drain or open-collector output configuration that asserts a low-active reset signal upon threshold violation.

Supervisors Applications

• Power supply monitoring in electronic systems requiring voltage level verification.
• Microcontroller reset generation circuits where external manual reset is not utilized.
• Embedded systems operating within the specified temperature range of -25°C to +85°C.

Supervisors Procurement Notes

Verify component authenticity and datasheet alignment due to discontinued status. Confirm package integrity for TO-92-3 through-hole installation. Check RoHS compliance documentation as referenced in manufacturer records. Ensure design-in compatibility with existing voltage thresholds before procurement attempts.

Supervisors Selection Notes

Select this component when a simple, single-channel voltage supervisor with fixed thresholds near 4.2 V is required. Consider the TO-92-3 through-hole package constraint and the absence of manual reset or watchdog features. Evaluate if the 500 uA operating current and 200 mW power dissipation fit the system constraints compared to alternative PMIC solutions.

Supervisors Part Context

This part belongs to the KA75 series of supervisory circuits from onsemi, categorized under PMIC - Power Management ICs. It serves as a basic voltage detector for ensuring stable operation of digital logic by monitoring supply rails. The KA75420 variant specifically targets applications needing precise 4.2 V class threshold monitoring.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Due to the discontinued status, verify equivalent functionality with other onsemi voltage supervisors or generic equivalents matching the 4.2 V threshold and TO-92-3 package.

Supervisors FAQ

Does the KA75420ZBU include a manual reset button?

No, the device does not support manual reset; it relies solely on automatic voltage threshold detection.

What is the output type of the KA75420ZBU?

The output is configured as open-drain or open-collector, providing a low-active reset signal.