Diodes Incorporated APX810S05-26SA-7

Overview

APX810S05-26SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 2.6V power-rail monitoring applications. It features an active-high push-pull RESET output, 50ms typical reset timeout, 7µA typical supply current, and guaranteed operation down to VCC = 1.0V - enabling reliable power-on reset in battery-powered embedded controllers.

For engineers reviewing the APX810S05-26SA-7 datasheet, APX810S05-26SA-7 pinout, APX810S05-26SA-7 application, or APX810S05-26SA-7 equivalent, key selection criteria include reset threshold accuracy (2.63V typ.), temperature coefficient (30ppm/°C), low-voltage validity (1.0V min), SOT23-3 package footprint, and compatibility with 3.3V/5V system rails requiring precise brown-out detection.

Technical Context

This device implements a precision bandgap-based voltage comparator with hysteresis-free threshold detection and internal power-on reset timing circuitry. Its reset assertion logic is triggered when VCC falls below 2.63V (±0.04V over temp), and remains asserted for ≥50ms after VCC rises above threshold - meeting JEDEC JESD8-12E requirements for microprocessor reset hold time.

The push-pull output stage delivers VOH ≥ 0.8×VCC at 500µA source current and VOL ≤ 0.3V at 1.2mA sink current, eliminating external pull-up resistors. Internal ESD protection (6kV HBM) and guaranteed functionality across –40°C to +125°C ambient ensure robustness in industrial and portable environments.

Key Specifications

Pinout & Package

APX810S05-26SA-7 is housed in a RoHS-compliant, halogen-free SOT23-3 package (JEDEC TO-236AB), with 1.3mm × 2.9mm footprint and 1.1mm max height - optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB26DBZR and MAX809SEUR+T, APX810S05-26SA-7 offers optimal balance of fast 50ms reset response, active-high push-pull output (no external components), and ultra-low 7µA supply current - making it ideal for battery-sensitive, space-constrained applications where rapid, deterministic recovery is critical.

Availability

APX810S05-26SA-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical sensors, smart meter communication modules, and automotive body control units requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for APX810S05-26SA-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 APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for cost-sensitive, low-power embedded systems requiring precision voltage monitoring and guaranteed reset timing without external components.

FAQ

What is the exact reset threshold voltage for APX810S05-26SA-7?

The APX810S05-26SA-7 has a nominal reset threshold of 2.63V, with a guaranteed range of 2.59V to 2.67V at +25°C and ±0.04V variation over –40°C to +125°C. This value is factory-trimmed and specified in the DS39140 datasheet Table 1 under "VTH APX809SXX/810SXX-26".

Does APX810S05-26SA-7 require an external capacitor for reset timing?

No - APX810S05-26SA-7 integrates all timing circuitry internally. Its 50ms typical reset timeout is generated by an on-chip RC network and requires no external capacitors, simplifying layout and improving reliability versus RC-based discrete supervisors.

Can APX810S05-26SA-7 operate with a 1.8V supply?

No - while the device guarantees valid reset assertion down to VCC = 1.0V, its minimum operating supply is 1.0V and maximum is 5.5V. However, the 2.63V threshold is fixed and not adjustable; using it on a 1.8V rail would cause continuous reset assertion, making it unsuitable for sub-threshold applications.

Is APX810S05-26SA-7 pin-compatible with APX809S05-26SA-7?

Yes - both share identical SOT23-3 pinout (Pin 1 = GND, Pin 2 = RESET, Pin 3 = VCC), but differ in output polarity: APX810S05-26SA-7 provides active-high RESET, whereas APX809S05-26SA-7 provides active-low RESET. Board-level substitution requires verifying MCU reset pin logic compatibility.