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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Diodes Incorporated APX810S05-46SR-7

Name: APX810S05-46SR-7
Brand: Diodes Incorporated
SKU: APX810S05-46SR-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX810S05-46SR-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: APX810S05-46SR-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

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Product details

Overview

APX810S05-46SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 4.63V supply monitoring applications. It provides active-high push-pull RESET output with 50ms typical reset timeout, 7µA typical supply current, and guaranteed operation down to VCC = 1.0V - enabling reliable power-on reset in portable and battery-powered systems.

For engineers reviewing the APX810S05-46SR-7 datasheet, APX810S05-46SR-7 pinout, APX810S05-46SR-7 application, or APX810S05-46SR-7 equivalent, key selection criteria include reset threshold accuracy (4.57–4.69V), temperature coefficient (30ppm/°C), low-voltage validity (1V min), push-pull drive capability (500µA source), and SOT23-SR package compatibility.

Technical Context

The APX810S05-46SR-7 integrates a precision bandgap reference and comparator to monitor VCC against a factory-trimmed 4.63V threshold. Its internal timing circuit generates a fixed 50ms (typ) active-high RESET pulse after VCC rises above threshold, independent of external components.

Designed for immunity to fast transients, it guarantees correct logic state at VCC ≥ 1.0V and supports operation across –40°C to +125°C ambient. The push-pull output eliminates need for external pull-up resistors and ensures defined logic levels under all valid supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold Voltage	4.57V (min) to 4.69V (max) at +25°C - ensures precise 4.63V nominal detection for 5V-system brownout protection
Reset Timeout Period	20ms (min) to 70ms (max) - provides stable 50ms (typ) power-on reset pulse for µP initialization
Supply Current	7µA (typ), 16µA (max) - enables multi-year battery life in always-on monitoring circuits
Operating Supply Range	1.0V to 5.5V - guarantees valid RESET assertion even during deep brownout or startup ramp
Output Type	Push-pull active-high - drives high/low directly without external resistor; sinks 1.2mA / sources 500µA
Temperature Coefficient	±30ppm/°C - maintains <±1.5% threshold drift over –40°C to +125°C industrial range
V_OH / V_OL	V_OH ≥ 0.8×V_CC @ 500µA; V_OL ≤ 0.3V @ 1.2mA - ensures TTL/CMOS-compatible logic levels

Pinout & Package

APX810S05-46SR-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SR) package with gull-wing leads, optimized for surface-mount assembly and thermal performance (θ_JA = 232°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane
2	RESET	Active-high push-pull output; asserts HIGH when V_CC < V_TH, returns LOW after timeout - directly interfaces µP RESET# input
3	V_CC	Power supply input; monitors target rail; internally decoupled - requires local 100nF ceramic capacitor per datasheet recommendation

Key Features

Feature	Design Value
Precision 4.63V threshold	Factory-trimmed ±1.5% over temperature - eliminates manual calibration and external resistor networks
50ms typ reset timeout	Internally generated timing - removes need for RC network and associated component tolerance drift
1.0V minimum operating voltage	Valid RESET assertion down to V_CC = 1.0V - supports ultra-low-power wake-up and brownout recovery in Li-ion systems
7µA supply current	Ultra-low quiescent draw - extends battery life in IoT sensors and wearables by >10× vs. legacy supervisors
SOT23-SR green package	Lead-free, halogen-free, antimony-free molding compound - meets RoHS 3 and JEDEC MSL1 requirements

Applications

Microprocessor Power Monitoring

Portable Medical Sensors

Use Scenario: Monitoring 5V supply rails in embedded controllers where undervoltage can cause firmware corruption or memory loss.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to hold µP in reset until stable 4.63V is confirmed.

Use Value: Prevents illegal instruction execution during power ramp with guaranteed 50ms minimum reset hold time.

Use Scenario: Battery-powered glucose meters requiring reliable startup and brownout recovery during intermittent use.

IC Role / Device Role / Timing Role: Low-current supervisor detecting 4.63V rail collapse and triggering controlled shutdown/reset sequence.

Use Value: Enables safe data retention and state recovery using only 7µA standby current - extending single-cell CR2032 life beyond 2 years.

Industrial PLC I/O Modules

Smart Home Hub Power Sequencing

Use Scenario: Ensuring deterministic boot in DIN-rail mounted controllers exposed to wide ambient (-40°C to +85°C) and noisy 24V-derived 5V rails.

IC Role / Device Role / Timing Role: Precision voltage detector with ±30ppm/°C drift compensation maintaining reset accuracy across full temperature range.

Use Value: Eliminates field failures due to temperature-induced threshold shift - critical for SIL-2 functional safety compliance.

Use Scenario: Coordinating power-up of Wi-Fi SoC, audio codec, and sensor hub from shared 5V SMPS in voice-controlled smart speakers.

IC Role / Device Role / Timing Role: Active-high supervisor providing synchronized reset release to multiple subsystems after stable 4.63V is established.

Use Value: Avoids race conditions and bus contention during boot by guaranteeing 50ms minimum reset assertion before release.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
APX810S05-46SA-7	SOT23-3 (SA) package variant - identical electrical specs but different pinout (Pin 1 = RESET, Pin 2 = GND, Pin 3 = V_CC)	Requires PCB layout revision; not drop-in compatible with SR footprint	Select SA only when redesigning board for alternate SOT23 variant or sourcing constraints require SA stock.
TPS3808G33DBVR	TI part with 3.3V threshold, 200ms default timeout, higher 12µA ICC, and open-drain output requiring pull-up	Not suitable for 4.63V detection or push-pull interface; requires external resistor and layout change	Choose only if system requires longer timeout or TI supply chain alignment - not a functional substitute for APX810S05-46SR-7.

Compared with APX810S05-46SA-7, the SR variant offers direct pin compatibility with common SOT23 layouts (GND on Pin 1); versus TPS3808G33DBVR, it delivers lower ICC, precise 4.63V threshold, and push-pull simplicity - reducing BOM count and improving noise immunity.

Availability

APX810S05-46SR-7 is available at Aetrix Electronics and suitable for microprocessor supervisory, portable medical sensor, and industrial PLC I/O module applications requiring stable component supply and long-term lifecycle support.

Supply support for APX810S05-46SR-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 and manufacturing operations across Asia, Europe, and the US.

The APX809S/810S series targets cost-sensitive, space-constrained µP supervisory applications - delivering precision voltage monitoring, ultra-low power, and SOT23 integration for portable, industrial, and computing systems.

FAQ

What is the exact reset threshold voltage range for APX810S05-46SR-7?

The APX810S05-46SR-7 has a guaranteed reset threshold range of 4.57V (minimum) to 4.69V (maximum) at +25°C, with ±30ppm/°C temperature coefficient ensuring stability from –40°C to +125°C. This 4.63V nominal threshold is factory-trimmed and does not require external calibration.

Does APX810S05-46SR-7 require an external pull-up resistor on the RESET pin?

No. APX810S05-46SR-7 features a push-pull output stage that actively drives both HIGH and LOW states. It sources up to 500µA and sinks up to 1.2mA, eliminating the need for an external pull-up resistor - simplifying layout and improving noise immunity in noisy environments.

Can APX810S05-46SR-7 operate reliably below 2.0V supply voltage?

Yes. The device guarantees valid RESET assertion and correct logic state down to V_CC = 1.0V, with full functionality including 50ms timeout generation and push-pull output drive. This enables robust brownout detection in Li-ion and coin-cell powered systems during deep discharge.

What is the difference between SOT23-SR and SOT23-SA package variants?

SOT23-SR and SOT23-SA are mechanically identical 3-pin packages but differ in pin numbering: SR uses Pin 1 = GND, Pin 2 = RESET, Pin 3 = V_CC; SA uses Pin 1 = RESET, Pin 2 = GND, Pin 3 = V_CC. APX810S05-46SR-7 is specifically configured for SR pinout and is not interchangeable with SA without PCB modification.

APX810S05-46SR-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.63V

Output:: Push-Pull, Totem Pole

Reset:: Active High

Reset Timeout:: 20ms Minimum

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

APX810S05-46SR-7 FAQ

1.How can I place an order for APX810S05-46SR-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX810S05-46SR-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for APX810S05-46SR-7 reliable?

The price and inventory of APX810S05-46SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S05-46SR-7 is usually 5 days.

3.What payment methods are accepted for APX810S05-46SR-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S05-46SR-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX810S05-46SR-7?

APX810S05-46SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX810S05-46SR-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for APX810S05-46SR-7?

For technical support, including APX810S05-46SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S05-46SR-7 requirements.

6.How does Aetrix verify that APX810S05-46SR-7 is sourced from the original manufacturer or authorized distributors?

All APX810S05-46SR-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that APX810S05-46SR-7 meets industry standards.

7.What is the process for return or replacement of APX810S05-46SR-7?

All APX810S05-46SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S05-46SR-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The APX810S05-46SR-7 part is unused and in its original packaging.

Return procedure for APX810S05-46SR-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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