Diodes Incorporated APX810S00-23SR-7

Overview

APX810S00-23SR-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 falls below 2.25 V, guarantees valid reset output down to VCC = 1.0 V, delivers 240 ms minimum reset timeout, and draws only 7 µA typical supply current. It is used in portable battery-powered equipment requiring reliable power-on reset and brownout detection.

For engineers reviewing the APX810S00-23SR-7 datasheet, APX810S00-23SR-7 pinout, APX810S00-23SR-7 application, or APX810S00-23SR-7 equivalent, key selection criteria include reset threshold accuracy (±0.03 V), push-pull output drive capability (3.2 mA sink), guaranteed operation at 1 V supply, temperature-stable threshold (30 ppm/°C), and SOT23-SR package compatibility with high-density PCB layouts.

Technical Context

The APX810S00-23SR-7 integrates a precision bandgap reference, comparator, and push-pull output stage in a single monolithic IC. Its reset comparator ignores fast transients on VCC and maintains correct logic state across -40°C to +125°C ambient range. The device asserts RESET high when VCC drops below 2.25 V and holds it active for ≥240 ms after VCC rises above threshold.

It operates over VCC = 1.0 V to 5.5 V and features guaranteed VOL ≤ 0.4 V at 3.2 mA sink load and VOH ≥ 0.8×VCC at 500 µA source load. The internal circuitry requires no external components, enabling direct integration into µP reset circuits without RC timing networks or pull-up resistors.

Key Specifications

Pinout & Package

SOT23-SR (3-pin) surface-mount package with 2.4 mm × 1.3 mm footprint, 0.95 mm height, and gull-wing leads. RoHS-compliant, halogen-free "Green" molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD2T and TPS3808G01DBVR, the APX810S00-23SR-7 offers lower quiescent current (7 µA), tighter threshold accuracy (±0.03 V), and a fixed 2.25 V trip point optimized for 2.5 V rail monitoring-making it superior for space-constrained, ultra-low-power 2.5 V/3.3 V designs where simplicity and predictability are critical.

Availability

APX810S00-23SR-7 is available at Aetrix Electronics and suitable for battery-powered IoT nodes, industrial PLC controllers, medical handheld devices, and automotive infotainment head units requiring stable component supply and long-term manufacturability.

Supply support for APX810S00-23SR-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 requiring precise, low-current voltage monitoring and robust reset generation.

FAQ

What is the exact reset threshold voltage for APX810S00-23SR-7?

The APX810S00-23SR-7 has a nominal reset threshold of 2.25 V, with a guaranteed range of 2.22 V to 2.29 V at +25°C. This value is laser-trimmed during production and remains stable across temperature (±0.03 V max deviation from nominal over -40°C to +125°C), ensuring consistent brownout detection in 2.5 V systems.

Does APX810S00-23SR-7 require an external pull-up resistor on the RESET pin?

No. The APX810S00-23SR-7 features a push-pull output stage capable of actively driving high (VOH ≥ 0.8×VCC) and low (VOL ≤ 0.4 V at 3.2 mA). This eliminates the need for an external pull-up resistor, reducing component count, PCB area, and potential signal integrity issues caused by RC time constants.

Can APX810S00-23SR-7 operate reliably at VCC = 1.2 V?

Yes. The device guarantees correct RESET logic state and functional operation down to VCC = 1.0 V, including full reset assertion and timeout functionality. At 1.2 V, it continues to monitor supply voltage and assert RESET high if VCC falls below 2.25 V - though such operation implies the monitored rail has already failed, and the IC is sustaining reset during final discharge.

How does the 240 ms reset timeout behave during temperature variation?

The reset timeout remains ≥240 ms across the full operating temperature range (-40°C to +125°C), with typical values of 240 ms at +25°C and up to 280 ms at extremes. This monotonic increase ensures timing margin is preserved in worst-case thermal conditions, preventing premature release of reset in high-temperature industrial environments.