Diodes Incorporated APX803L-32W5-7

Overview

APX803L-32W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 3.2V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 220ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C ambient range in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L-32W5-7 datasheet, APX803L-32W5-7 pinout, APX803L-32W5-7 application, or APX803L-32W5-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current impact on battery life, and SOT25 package compatibility with high-density PCB layouts.

Technical Context

The APX803L-32W5-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×V_TH) to prevent oscillation during power-up/down transitions. Its comparator continuously monitors V_CC against the fixed 3.2V threshold and asserts the open-drain RESET pin low when V_CC drops below that level.

Reset assertion persists until V_CC rises above the release voltage (V_{TH_H} = V_{TH_L} + hysteresis), after which the internal timer initiates a 220ms recovery delay before releasing RESET - a value fixed at wafer-level for this variant and stable within ±10% over –40°C to +85°C.

Key Specifications

Pinout & Package

SOT25 (5-pin) package with 1.6mm × 2.9mm footprint and 0.95mm height; thermally enhanced for continuous operation at 85°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with APX803L20-32SA, the APX803L-32W5-7 offers superior thermal performance and routing flexibility via NC pins; versus TLV803E32DBZR, it delivers tighter accuracy and guaranteed hysteresis-critical for safety-critical or industrial-grade reset integrity.

Availability

APX803L-32W5-7 is available at Aetrix Electronics and suitable for smart wearable sensors, industrial PLC I/O modules, and portable medical infusion pumps requiring stable component supply with guaranteed long-term continuity.

Supply support for APX803L-32W5-7 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 reset generation in battery-operated and thermally constrained embedded systems.

FAQ

What is the exact reset threshold voltage of APX803L-32W5-7?

The APX803L-32W5-7 has a factory-trimmed fixed threshold of 3.2V with ±1.5% accuracy over –40°C to +85°C. This value is laser-trimmed during wafer test and does not require external calibration or resistor networks.

Can the reset timeout be adjusted externally?

No. The 220ms reset timeout is factory-programmed and permanently fixed for the APX803L-32W5-7 variant. It cannot be modified via external components or configuration pins - unlike adjustable-delay supervisors, this part relies on internal capacitor timing.

Is the SOT25 package RoHS-compliant and lead-free?

Yes. The APX803L-32W5-7 uses a fully RoHS-compliant, lead-free SOT25 package meeting EU Directive 2015/863/EU (RoHS 3), with <900ppm bromine, <900ppm chlorine, and <1000ppm antimony - certified as "Green" per Diodes Incorporated's definitions.

Does APX803L-32W5-7 support operation below 1.0V supply?

No. The device requires minimum V_CC of 0.9V to function, but its specified operating range is 0.9V to 5.5V. Below 0.9V, internal reference and comparator circuitry become non-functional, and RESET behavior is undefined.