Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated APX803L05-46SA-7

Name: APX803L05-46SA-7
Brand: Diodes Incorporated
SKU: APX803L05-46SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: APX803L05-46SA-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

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

Datasheet:: APX803L05-46SA-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,826

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

APX803L05-46SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 4.6V 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 ambient range in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the APX803L05-46SA-7 datasheet, APX803L05-46SA-7 pinout, APX803L05-46SA-7 application, or APX803L05-46SA-7 equivalent, key selection criteria include fixed 4.6V detection level, SOT23-3 package compatibility, 55ms delay timing, and low-quiescent-current supervision for energy-constrained embedded systems.

Technical Context

The APX803L05-46SA-7 integrates a precision bandgap reference and comparator with hysteresis (0.01×V_TH) to ensure stable reset assertion during V_CC droop. Its internal threshold is factory-trimmed to 4.6V with ±1.5% initial accuracy and 50ppm/°C temperature coefficient.

Reset assertion occurs within 20µs of V_CC falling below 4.6V; recovery requires V_CC to exceed 4.6V + hysteresis before RESET deasserts. The open-drain output supports pull-up to any voltage ≤5.5V and sinks up to 20mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Detection Threshold	4.6V ±1.5% - fixed internal value enabling precise power-rail monitoring without external resistors
Supply Current	1.0µA typical - minimizes load on coin-cell or Li-ion backup supplies in always-on systems
Reset Timeout	55ms - ensures reliable processor initialization after brownout recovery in microcontroller-based edge nodes
Output Type	Open-drain, active-low - allows wired-OR reset bus sharing and flexible pull-up voltage selection (≤5.5V)
Operating Temp	–40°C to +85°C - supports industrial-grade deployment in automotive cabin modules and industrial gateways
Hysteresis	0.01×V_TH (≈46mV) - prevents oscillatory reset toggling near threshold during slow V_CC ramp-up
Response Time	20µs - guarantees sub-microsecond detection of fast transients, critical for real-time safety-critical firmware

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.45mm height, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Ground Reference	Return path for internal circuitry; must be connected directly to system ground plane for noise immunity
2 (RESET)	Open-Drain Reset Output	Active-low signal asserted when V_CC < 4.6V; requires external pull-up resistor to host logic rail
3 (V_CC)	Supply Input	Monitored power rail input; operates from 0.9V to 5.5V; powers internal detector circuitry

Key Features

Feature	Design Value
No external components required	Eliminates BOM cost and PCB area for resistor dividers or timing capacitors in reset generation
Low temperature drift	50ppm/°C threshold coefficient ensures <±30mV total drift over –40°C to +85°C operating range
Fast response time	20µs propagation delay enables detection of short-duration dips (<100µs) that could crash firmware
Multiple delay options	55ms timeout matches typical µP boot sequence timing, avoiding premature release before code execution begins
Robust ESD protection	±4000V HBM rating protects against handling damage during assembly and field service operations

Applications

Smart Wearable Power Supervision

Industrial PLC I/O Module

Use Scenario: Monitors 4.6V LDO output powering ARM Cortex-M4 MCU in fitness tracker with BLE radio.

IC Role / Device Role / Timing Role: Voltage detector asserting active-low RESET until regulated rail stabilizes post-battery insertion or cold start.

Use Value: Prevents corrupted flash writes during unstable power-up by holding MCU in reset for full 55ms while LDO settles.

Use Scenario: Supervises 4.6V auxiliary rail feeding isolated CAN transceiver and analog input front-end in modular PLC base unit.

IC Role / Device Role / Timing Role: Ensures deterministic system reset across all modules when main 24V supply dips below safe operating margin.

Use Value: Guarantees synchronized restart of distributed I/O nodes, eliminating race conditions during brownout recovery.

Portable Medical Glucometer

Automotive Cabin Control Unit

Use Scenario: Watches 4.6V buck converter output supplying LCD controller and glucose sensor ADC in battery-operated diagnostic device.

IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse to prevent erroneous glucose readings during power transitions.

Use Value: Achieves Class II medical device reliability by eliminating false triggers from EMI or load-switching noise.

Use Scenario: Monitors 4.6V domain powering HVAC display microcontroller and touch interface ASIC in vehicle infotainment cluster.

IC Role / Device Role / Timing Role: Provides fail-safe reset initiation when ignition-derived 5V rail sags during engine cranking.

Use Value: Maintains UI responsiveness by ensuring rapid, deterministic recovery without requiring watchdog intervention.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV803E46DBVR	4.6V threshold, 350ms default delay, 0.5µA supply current, SOT23-3	Longer timeout unsuitable for fast-boot MCUs; lower current benefits ultra-low-power sleep modes	Select if system requires extended reset hold time and ultra-low standby consumption is prioritized over boot speed
MAX809SEUR+T	4.63V threshold, 240ms delay, 12µA supply current, SOT23-3	Higher quiescent current limits use in multi-year battery applications; tighter 2.5% threshold tolerance	Choose when higher absolute threshold accuracy is needed and 12µA supply current is acceptable in primary power domain

Compared with TLV803E46DBVR and MAX809SEUR+T, the APX803L05-46SA-7 delivers optimal balance of 55ms timing alignment with modern µP boot sequences, 1µA supply current for decade-long battery life, and ±1.5% threshold accuracy-making it ideal for space- and energy-constrained edge devices.

Availability

APX803L05-46SA-7 is available at Aetrix Electronics and suitable for smart wearable power supervision, industrial PLC I/O modules, and portable medical glucometers requiring stable component supply with guaranteed long-term continuity.

Supply support for APX803L05-46SA-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 for power management, signal integrity, and connectivity applications.

The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy reset generation in battery-operated and energy-harvesting systems.

FAQ

What is the exact detection threshold voltage of APX803L05-46SA-7?

The APX803L05-46SA-7 has a factory-trimmed detection threshold of 4.6V with ±1.5% initial accuracy at +25°C. This value is fixed internally and does not require external resistor configuration. Temperature drift is specified at 50ppm/°C, resulting in ±30mV maximum deviation over the full –40°C to +85°C operating range.

Can APX803L05-46SA-7 be used with a 3.3V microcontroller I/O rail?

Yes-the open-drain RESET output is compatible with 3.3V logic when pulled up to that rail. The output can sink up to 20mA and withstand up to 6.0V on the RESET pin, allowing direct interfacing with 1.8V, 3.3V, or 5V host systems without level-shifting circuitry.

Does APX803L05-46SA-7 require an external capacitor on the RESET line?

No external capacitor is required. The 55ms reset timeout is implemented entirely within the IC using internal timing circuitry. Adding external capacitance would distort the specified delay and is not recommended per the datasheet design guidelines.

Is APX803L05-46SA-7 qualified for automotive applications?

The APX803L05-46SA-7 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants under separate part numbering (e.g., APX803L05-46SAQ-7) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. This variant is intended for industrial and consumer applications only.

APX803L05-46SA-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:: 4.6V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 35ms Minimum

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

APX803L05-46SA-7 FAQ

1.How can I place an order for APX803L05-46SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L05-46SA-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 APX803L05-46SA-7 reliable?

The price and inventory of APX803L05-46SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-46SA-7 is usually 5 days.

3.What payment methods are accepted for APX803L05-46SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-46SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L05-46SA-7?

APX803L05-46SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L05-46SA-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 APX803L05-46SA-7?

For technical support, including APX803L05-46SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-46SA-7 requirements.

6.How does Aetrix verify that APX803L05-46SA-7 is sourced from the original manufacturer or authorized distributors?

All APX803L05-46SA-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 APX803L05-46SA-7 meets industry standards.

7.What is the process for return or replacement of APX803L05-46SA-7?

All APX803L05-46SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-46SA-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 APX803L05-46SA-7 part is unused and in its original packaging.

Return procedure for APX803L05-46SA-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…