Onsemi Under-Voltage Sensing Reset Circuit TO-92 4.59V

The Onsemi Under-Voltage Sensing Reset Circuit 4.59V provides a 4.59V threshold for monitoring low voltage conditions in microprocessor and microcontroller-based systems, using just a single external resistor.

Overview

This under-voltage sensing circuit functions as a reset controller in microprocessor and microcontroller-based systems. It monitors low voltage conditions with only one external resistor, which simplifies the design of reset circuitry.

Key Features

• Precision comparator with threshold accuracy specified over the operating temperature range
• Built-in hysteresis to prevent erratic reset operation during voltage fluctuations
• Internal clamp diode for discharging external delay capacitors
• Low standby current for improved power efficiency
• Operates from a supply voltage down to 1V
• Open-collector reset output capable of sinking over 10mA
• Supplied in a standard 3-pin TO-92 through-hole package

Performance and Construction

At the core of the device is a precision comparator with built-in hysteresis. This hysteresis helps ensure the microprocessor resets only when an actual under-voltage condition persists. The comparator thresholds are specified to remain accurate across an operating temperature range of 0°C to 70°C, which makes the device suitable for environments within that range.

Package

The compact TO-92 through-hole package supports integration into a variety of circuit board layouts. Dimensions are 3.3 x 1.5 x 4.3 (width x depth x height), and the weight is 0.227 g.

Applications

The device is suited to reset control in microprocessor and microcontroller-based systems, to monitoring low voltage conditions, and to timing circuits that use an external delay capacitor.

Overall, the Onsemi Under-Voltage Sensing Reset Circuit 4.59V provides a TO-92 through-hole reset solution with operation down to 1V and a specified operating temperature range of 0°C to 70°C.