Diodes Incorporated APX810S00-44SA-7

Overview

APX810S00-44SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in digital systems. It provides active-high reset assertion when VCC drops below 4.38 V (typ), maintains reset for ≥240 ms after recovery, operates down to 1 V supply, draws only 7 µA typical supply current, and uses a push-pull output in SOT23-3 (SA) package-ideal for battery-powered equipment requiring reliable power-on reset.

For engineers reviewing the APX810S00-44SA-7 datasheet, APX810S00-44SA-7 pinout, APX810S00-44SA-7 application, or APX810S00-44SA-7 equivalent, key selection criteria include reset threshold accuracy (±0.06 V), guaranteed operation at VCC = 1 V, 240 ms minimum reset timeout, push-pull drive capability, and SOT23-3 footprint compatibility with space-constrained embedded designs.

Technical Context

The APX810S00-44SA-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 4.38 V threshold (25°C typ), with ±30 ppm/°C temperature coefficient. Its internal timing circuit ensures reset remains asserted for 140–280 ms after VCC exceeds VTH, meeting µP power-on initialization requirements.

It features a push-pull output stage capable of sourcing ≥500 µA at VOH ≥ 0.8×VCC and sinking ≥1.2 mA at VOL ≤ 0.3 V, eliminating external pull-up resistors. The device guarantees correct logic state down to VCC = 1 V, enabling robust operation during brown-out conditions.

Key Specifications

Pinout & Package

SOT23-3 (SA) package: 1.7 mm × 2.9 mm × 1.3 mm body, gull-wing leads, RoHS-compliant "Green" molding compound (Br/Cl <1500 ppm total, Sb <1000 ppm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB33DBZR and MAX809SEUR+T, the APX810S00-44SA-7 offers optimal balance of 4.38 V threshold accuracy, ultra-low 7 µA supply current, and true push-pull drive-making it ideal for new designs targeting compact size, long battery life, and simplified layout in 5 V µP systems.

Availability

APX810S00-44SA-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical sensors, smart home gateways, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for APX810S00-44SA-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, low-power solutions for industrial, computing, and consumer markets.

The APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for cost-sensitive, space-constrained applications needing precision voltage monitoring and guaranteed reset timing without external components.

FAQ

What is the exact reset threshold voltage for APX810S00-44SA-7 at 25°C?

The APX810S00-44SA-7 has a nominal reset threshold of 4.38 V at 25°C, with a guaranteed range of 4.32 V to 4.44 V per the DS39140 datasheet. This value is factory-trimmed and specified over temperature with ±30 ppm/°C drift, ensuring consistent performance across industrial environments.

Does APX810S00-44SA-7 require an external pull-up resistor on the RESET pin?

No. The APX810S00-44SA-7 features a push-pull output stage that actively drives both high and low states, eliminating the need for an external pull-up resistor. This simplifies design, saves PCB area, and avoids potential timing delays or leakage issues associated with passive pull-ups.

Can APX810S00-44SA-7 operate reliably at VCC = 1.2 V?

Yes. The device guarantees correct logic state and functional reset assertion down to VCC = 1.0 V, as confirmed in the Recommended Operating Conditions table. At 1.2 V, the RESET output remains valid and meets VOL ≤ 0.3 V and VOH ≥ 0.8×VCC specifications, supporting brown-out detection in ultra-low-voltage scenarios.

Is the SOT23-3 (SA) package of APX810S00-44SA-7 lead-free and RoHS compliant?

Yes. The SA package uses Diodes Incorporated's "Green" molding compound: fully lead-free, RoHS 3 compliant (2015/863/EU), halogen-free (<1500 ppm Br+Cl), and antimony-free (<1000 ppm). This is documented in Notes 1–3 of the DS39140 datasheet and verified via Diodes' official lead-free certification portal.