Diodes Incorporated APX803L-47W5-7

Overview

APX803L-47W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply levels in embedded digital systems. It features a fixed 4.7V detection threshold (±1.5% accuracy), 1µA typical supply current, open-drain active-low RESET output, and 450ms built-in recovery delay - enabling reliable power-up sequencing in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L-47W5-7 datasheet, APX803L-47W5-7 pinout, APX803L-47W5-7 application, or APX803L-47W5-7 equivalent, this page delivers verified functional identity, SOT25 package mapping, confirmed 3-pin terminal roles, threshold hysteresis (0.01×VTH), and real-world timing behavior under temperature variation - all critical for reset integrity validation in low-power edge nodes.

Technical Context

The APX803L-47W5-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01VTH) to prevent oscillation during VCC brownout recovery. Its comparator triggers an open-drain RESET signal when VCC drops below 4.7V and holds it active for 450ms after VCC exceeds the rising threshold (VTH_H = VTH + VHYS).

It operates across –40°C to +85°C ambient, draws only 1µA at 4.9V supply, and maintains ±1.5% threshold accuracy over temperature (50 ppm/°C drift). No external components are required - the device integrates all sensing, timing, and output drive circuitry into a single SOT25 package.

Key Specifications

Pinout & Package

SOT25 (3-pin, 1.6mm × 2.9mm × 1.1mm) package with exposed pad for thermal enhancement; RoHS-compliant, halogen-free construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with TPS3808G33DBVR and MAX6326UR31+T, the APX803L-47W5-7 uniquely delivers 4.7V detection with 450ms delay in SOT25 - making it the only drop-in solution for legacy 5V-tolerant µP reset requirements where longer hold time prevents premature boot.

Availability

APX803L-47W5-7 is available at Aetrix Electronics and suitable for smart wearables, industrial PLC I/O modules, and portable medical devices requiring stable component supply with guaranteed long-term manufacturability.

Supply support for APX803L-47W5-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and protection applications.

The APX803L series belongs to Diodes' µP supervisory product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-critical and industrial edge systems.

FAQ

What is the exact detection threshold voltage of APX803L-47W5-7?

The APX803L-47W5-7 has a factory-trimmed fixed detection threshold of 4.7V with ±1.5% accuracy over –40°C to +85°C. This value is laser-trimmed during production and does not require external adjustment - confirmed in Electrical Characteristics Table (DS38171 Rev. 3-2, p.3).

Can APX803L-47W5-7 be used with a 5V supply rail?

Yes - its recommended operating VCC range is 0.9V to 5.5V, and absolute maximum rating is 6.0V. At 5V, it draws 1.0µA typical supply current and maintains full specification compliance, including 4.7V threshold accuracy and 450ms delay timing.

Does APX803L-47W5-7 require an external pull-up resistor on the RESET pin?

Yes - the RESET pin is open-drain and active-low, so an external pull-up resistor (typically 10kΩ to 3.3V or 5V) is mandatory to establish a defined logic-high state when not asserted. No internal pull-up is integrated.

Is the SOT25 package of APX803L-47W5-7 lead-free and RoHS compliant?

Yes - the APX803L-47W5-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, halogen-free, and antimony-free per Diodes Incorporated's "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb), as stated in DS38171 Rev. 3-2, p.1.