Diodes Incorporated APX803L20-30W5-7

Overview

APX803L20-30W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 3.0V threshold detection with ±1.5% accuracy, 220ms reset timeout, and 1µA typical supply current in a 3-pin SOT25 package. It delivers active-low open-drain reset signaling for power monitoring in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L20-30W5-7 datasheet, APX803L20-30W5-7 pinout, APX803L20-30W5-7 application, or APX803L20-30W5-7 equivalent, this page details its fixed-threshold supervision function, low-quiescent-current operation, thermal stability across –40°C to +85°C, and compatibility with microcontroller reset input requirements.

Technical Context

The APX803L20-30W5-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×V_TH) to prevent reset chatter during supply ramp-up or brownout recovery. Its comparator architecture triggers within 20µs of V_CC falling below 3.0V and holds RESET low until V_CC exceeds 3.045V (V_TH + hysteresis).

This variant integrates a factory-trimmed 220ms delay (143–297ms over temperature) and operates from 0.9V to 5.5V supply, supporting systems where deterministic reset timing prevents premature processor wake-up after power interruption.

Key Specifications

Pinout & Package

SOT25 is a 3-pin, lead-free, RoHS-compliant surface-mount package with gull-wing leads and standard JEDEC MO-178AC dimensions (2.9mm × 1.6mm × 1.1mm). Pin 1 = GND, Pin 2 = RESET (open-drain output), Pin 3 = V_CC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EA30DBZR and MAX809SEUR+T, the APX803L20-30W5-7 delivers superior thermal stability of reset timeout (±77ms over temperature vs. ±50ms and ±35ms), lower I_Q than MAX809, and tighter package-level reliability qualification for industrial reflow profiles.

Availability

APX803L20-30W5-7 is available at Aetrix Electronics and suitable for smart wearable sensors, industrial PLC I/O modules, and portable diagnostic handhelds requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for APX803L20-30W5-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The APX803L series targets ultra-low-power supervisory functions in space-constrained, battery-sensitive applications-designed specifically to replace discrete resistor-divider + comparator circuits with integrated, calibrated, and production-tested voltage detection.

FAQ

What is the exact reset threshold voltage and tolerance for APX803L20-30W5-7?

The APX803L20-30W5-7 has a nominal reset threshold of 3.0V with ±1.5% accuracy over temperature (–40°C to +85°C), meaning the actual trip point falls between 2.955V and 3.045V under specified operating conditions. This value is factory-trimmed and does not require external calibration.

Can APX803L20-30W5-7 drive a 10kΩ pull-up resistor to 3.3V?

Yes-the device's open-drain RESET output sinks up to 20mA and guarantees ≤0.4V output low voltage at 3.5mA sink current. With a 10kΩ pull-up to 3.3V, the resulting load is only 0.33mA, well within specification and ensuring clean logic-low assertion across temperature and process variation.

Does APX803L20-30W5-7 require an external capacitor for timing or filtering?

No-this device contains no internal timing capacitor and requires no external components. The 220ms reset timeout is implemented via on-chip RC elements trimmed during manufacturing; only a 100nF bypass capacitor on V_CC is recommended per datasheet Figure 1 for noise immunity.

Is APX803L20-30W5-7 qualified for automotive applications?

While the APX803L20-30W5-7 meets industrial temperature and reliability standards, it is not AEC-Q100 qualified. For automotive use, Diodes Incorporated offers the pin-compatible APX803L20-30W5-7Q variant (with Q suffix), which undergoes full AEC-Q100 stress testing and is manufactured in IATF 16949-certified facilities.