Diodes Incorporated APX803L05-41SA-7

Overview

APX803L05-41SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 5.0V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 55ms reset timeout. It features open-drain active-low RESET output and operates across –40°C to +85°C in battery-powered instrumentation and portable electronics.

For engineers reviewing the APX803L05-41SA-7 datasheet, APX803L05-41SA-7 pinout, APX803L05-41SA-7 application, or APX803L05-41SA-7 equivalent, key selection criteria include reset threshold tolerance, ultra-low quiescent current, fixed delay timing, open-drain drive capability, and SOT23 package compatibility with space-constrained PCB layouts.

Technical Context

The APX803L05-41SA-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×V_TH) to prevent oscillation during power-up/down transitions. Its internal comparator monitors V_CC against a factory-trimmed 5.0V threshold and asserts RESET when V_CC drops below V_TH – 100mV within 20µs.

Reset assertion remains active until V_CC exceeds V_TH + hysteresis, with built-in 55ms timeout ensuring reliable µP initialization. The open-drain output supports wired-OR configuration and external pull-up to any logic rail up to 5.5V.

Key Specifications

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.45mm height, gull-wing leads. RoHS-compliant, halogen-free, lead-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803E50DBVR and MAX809SEUR+T, the APX803L05-41SA-7 delivers optimal balance of ultra-low ICC (1µA), precise 55ms timing, and robust hysteresis-making it ideal for space- and energy-constrained embedded systems where predictable, low-overhead supervision is critical.

Availability

APX803L05-41SA-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, industrial PLC I/O modules, portable medical sensors, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for APX803L05-41SA-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 across Asia, Europe, and the US, serving industrial, computing, and consumer markets.

The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-operated and energy-sensitive embedded systems.

FAQ

What is the exact reset threshold voltage for APX803L05-41SA-7?

The APX803L05-41SA-7 has a factory-trimmed reset threshold of 5.0V with ±1.5% accuracy over –40°C to +85°C. This value is fixed internally and not adjustable; electrical test data confirms typical deviation is ≤±0.075V at 25°C and remains within spec across full temperature range.

Can APX803L05-41SA-7 drive a 10kΩ pull-up resistor to 3.3V?

Yes - the open-drain RESET output sinks ≥3.5mA at 0.4V V_OL, allowing reliable logic-low assertion with a 10kΩ pull-up to 3.3V (I_PULLUP = 330µA). Output voltage remains <0.4V under this load, satisfying standard CMOS input low-level requirements.

Is there a version with adjustable reset delay?

No - the APX803L05-41SA-7 provides a fixed 55ms reset timeout, selected by the "05" suffix per Diodes' ordering matrix. Adjustable-delay variants are not offered in the APX803L family; alternative families like APX811 require external capacitor programming.

Does APX803L05-41SA-7 meet AEC-Q200 for automotive use?

No - APX803L05-41SA-7 is qualified for industrial temperature range (–40°C to +85°C) but is not AEC-Q200 stress-tested or manufactured in IATF 16949-certified facilities. For automotive applications, Diodes recommends contacting their sales team for AEC-Q200-qualified alternatives such as the APX809 series.