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HT7039A from HT

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HT7039A

Manufacturer: HT, HOLTEK, 合泰

Voltage Detector

Partnumber Manufacturer Quantity Availability
HT7039A HT, HOLTEK, 合泰 3574 In Stock

Description and Introduction

Voltage Detector **Introduction to the HT7039A Voltage Detector**  

The HT7039A is a precision voltage detector IC designed to monitor power supply levels in electronic circuits. It operates by comparing the input voltage against a fixed internal reference, triggering an output signal when the voltage falls below or rises above a predefined threshold. This functionality makes it ideal for applications requiring reliable power monitoring, such as battery-powered devices, microcontrollers, and embedded systems.  

Featuring low power consumption and high accuracy, the HT7039A ensures stable performance across a wide operating voltage range. Its compact form factor and minimal external component requirements enhance design flexibility, making it suitable for space-constrained applications. Additionally, the device offers hysteresis to prevent false triggering due to voltage fluctuations, improving system reliability.  

Common uses include undervoltage/overvoltage protection, reset circuits, and power management in consumer electronics, industrial equipment, and automotive systems. With its robust design and dependable operation, the HT7039A provides an efficient solution for maintaining stable voltage conditions in critical electronic applications.  

Engineers and designers can leverage its precision and ease of integration to enhance system safety and performance while minimizing power consumption.

Application Scenarios & Design Considerations

Voltage Detector

Alternative Part Number

  • TLV70330DBVR --: Low-dropout linear regulator with similar 3.3V-class output and low quiescent current, widely available and pin-compatible in SOT-23-5.
  • AP2112K-3.3TRG1 --: Popular 3.3V LDO regulator with comparable current capability and dropout, easy drop-in replacement in small packages.
  • MCP1700T-3302E/TT --: Ultra-low quiescent current 3.3V LDO with similar electrical characteristics, suitable for battery-powered designs.
  • APX803L-40SA-7 --: Voltage supervisor with 3.9V/4.0V threshold in SOT-23, functionally similar to the HT7039A reset IC and widely available.
  • MAX809REUR+T --: Industry-standard 3-pin microprocessor reset supervisor with 3.9V-class threshold, a common drop-in functional replacement.
  • MCP131T-450E/TT --: Low-cost voltage detector/reset supervisor in SOT-23 with similar threshold range and active-low reset output.
  • TL431 --: Industry-standard adjustable shunt voltage reference with wide availability; can replace the HT7039A voltage reference function in most circuits with minor resistor adjustment.
  • LM4040 --: Precision micropower shunt voltage reference available in fixed output voltages; a good functional substitute for the HT7039A in reference applications.
  • AZ431 --: Adjustable precision shunt regulator similar to TL431, low cost and widely stocked; suitable as a drop-in alternative for the HT7039A reference role.

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