Diodes Incorporated APX803L20-16W5-7

Overview

APX803L20-16W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.0V 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 APX803L20-16W5-7 datasheet, APX803L20-16W5-7 pinout, APX803L20-16W5-7 application, or APX803L20-16W5-7 equivalent, this device supports critical low-power system supervision where fast 20µs reset assertion, wide 0.9–5.5V operating range, and no external components are required.

Technical Context

The APX803L20-16W5-7 implements a fixed-threshold voltage detector with internal hysteresis (0.01×V_TH) and temperature-compensated bandgap reference, enabling stable operation from –40°C to +85°C ambient. Its reset logic asserts low when V_CC drops below 2.0V and holds active for 220ms after recovery.

It uses an open-drain output stage capable of sinking 20mA, compatible with pull-up voltages up to 5.5V, and features no external timing components-delay is factory-programmed and thermally stable across its full operating range.

Key Specifications

Pinout & Package

SOT25 (3-pin) package with 1.3mm × 2.9mm footprint, 0.95mm height, and standard JEDEC MO-220 outline. Pin 1 = V_CC, Pin 2 = RESET (open-drain), Pin 3 = GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with APX803L20-16SA-7, the W5 variant offers improved thermal dissipation (θ_JA = 200°C/W vs. 275°C/W in SOT323) and mechanical robustness; versus TLV803S20DBZR, it delivers lower quiescent current and pinout compatibility with legacy Diodes designs.

Availability

APX803L20-16W5-7 is available at Aetrix Electronics and suitable for wearable health monitors, smart home sensor nodes, and industrial data loggers requiring stable component supply with guaranteed long-term availability.

Supply support for APX803L20-16W5-7 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 solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.

The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for ultra-low-power embedded systems where reliability, accuracy, and minimal board footprint are critical.

FAQ

What is the exact reset threshold voltage for APX803L20-16W5-7?

The APX803L20-16W5-7 has a factory-set nominal reset threshold of 2.0V, with guaranteed accuracy of ±1.5% over –40°C to +85°C ambient temperature. This corresponds to a min/max range of 1.97V to 2.03V at +25°C, and includes built-in hysteresis of 0.01×V_TH (≈20mV) to prevent oscillation near the trip point.

Can APX803L20-16W5-7 drive a 10kΩ pull-up resistor to 3.3V?

Yes - the open-drain RESET pin can sink up to 20mA, so driving a 10kΩ pull-up to 3.3V (resulting in 0.33mA load) is well within specification. The output low voltage remains ≤0.4V at 3.5mA sink current, ensuring solid logic-low assertion even under worst-case conditions.

Is a bypass capacitor required on the VCC pin?

Yes - a minimum 100nF ceramic capacitor must be placed between V_CC and GND, as specified in the Typical Applications Circuit. This stabilizes the internal reference and prevents false resets caused by supply noise or transient droop during high-current switching events.

Does APX803L20-16W5-7 support automotive qualification?

No - APX803L20-16W5-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., APX803L20Q series) with PPAP documentation, IATF 16949 manufacturing, and extended temperature testing; this part is rated for industrial use only (–40°C to +85°C).