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

Diodes Incorporated APX803L05-12SA-7

Name: APX803L05-12SA-7
Brand: Diodes Incorporated
SKU: APX803L05-12SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX803L05-12SA-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

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

Datasheet:: APX803L05-12SA-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

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Product details

Overview

APX803L05-12SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.2V supply monitoring with ±1.5% threshold 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 instrumentation and portable embedded systems.

For engineers reviewing the APX803L05-12SA-7 datasheet, APX803L05-12SA-7 pinout, APX803L05-12SA-7 application, or APX803L05-12SA-7 equivalent, key selection criteria include detection voltage tolerance, reset delay timing stability over temperature, low-quiescent-current impact on system power budget, and SOT23 package compatibility with high-density PCB layouts.

Technical Context

The APX803L05-12SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×V_TH) to prevent oscillation during V_CC recovery. Its comparator architecture triggers reset within 20µs when V_CC drops below 1.2V and holds active until V_CC exceeds 1.2V by ≥1.5%.

Reset timeout is fixed at 55ms (typ.) and stable across –40°C to +85°C, with no external components required. The open-drain output supports pull-up to any voltage ≤5.5V and sinks up to 20mA, enabling direct interface with µP reset inputs or logic-level control circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Detection Voltage	1.2V ±1.5% - ensures reliable reset assertion for 1.2V-core logic or low-voltage SoC power rails
Supply Current	1.0µA (typ.), 2.5µA (max.) - minimizes battery drain in always-on monitoring applications
Reset Timeout	55ms (typ.) - provides sufficient hold time for µP initialization without excessive system boot delay
Response Time	20µs - guarantees fast fault detection during rapid V_CC collapse
Operating Temp	–40°C to +85°C - supports industrial and extended commercial environments
Output Type	Open-drain, active-low - enables wired-OR reset bus configuration and flexible voltage-level translation
Package	SOT23-3 - surface-mount footprint compatible with automated assembly and space-constrained designs

Pinout & Package

SOT23-3 package with 1.3mm × 2.9mm body, 0.95mm height, and standard JEDEC MO-178 footprint. RoHS-compliant, lead-free, halogen-free construction.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Reference ground return path; must be connected to system power ground plane for accurate threshold sensing
2	RESET	Open-drain active-low reset output; requires external pull-up resistor (typically 10kΩ) to host supply rail
3	V_CC	Power input and monitored supply rail; senses voltage directly-no divider needed for 1.2V detection

Key Features

Feature	Design Value
Fixed 1.2V threshold	Internally trimmed; eliminates need for external resistive dividers or calibration in 1.2V system monitoring
±1.5% accuracy over temp	Guarantees reset assertion within 18mV of nominal threshold across full operating range
55ms factory-set delay	Matches common µP reset timing requirements without capacitor tolerance or aging drift concerns
20µs fast response	Prevents spurious resets during transient dips while capturing critical brown-out events
No external components	Reduces BOM count, PCB area, and qualification effort for cost-sensitive portable designs

Applications

Portable Medical Sensors

Industrial PLC I/O Modules

Use Scenario: Wearable ECG sensor with coin-cell battery and ultra-low-power MCU.

IC Role / Device Role / Timing Role: Monitors 1.2V LDO output powering the MCU core; asserts RESET if voltage sags below 1.182V.

Use Value: Prevents firmware corruption during battery depletion while extending operational life via 1µA quiescent draw.

Use Scenario: DIN-rail mounted I/O module with isolated 1.2V digital logic rail.

IC Role / Device Role / Timing Role: Supervises 1.2V FPGA configuration supply; holds system in reset until stable post-power-up.

Use Value: Ensures deterministic FPGA configuration by guaranteeing ≥55ms clean power before release.

Smart Meter Communication ICs

Automotive Body Control Units

Use Scenario: NB-IoT modem IC powered from 1.2V buck converter in utility meter.

IC Role / Device Role / Timing Role: Detects 1.2V rail collapse during RF transmission surges; triggers controlled shutdown sequence.

Use Value: Avoids data loss or memory corruption by initiating graceful disconnect before voltage breach.

Use Scenario: Low-power door module with 1.2V CAN transceiver supply.

IC Role / Device Role / Timing Role: Resets microcontroller if 1.2V rail falls due to load dump or cold-crank dip.

Use Value: Maintains CAN communication integrity by enforcing minimum reset hold time per ISO 11898-2.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3808G12DBVR	1.2V threshold, 200ms default delay, 1.6µA supply current, SOT23-6 package	Longer reset timeout; requires external capacitor for delay adjustment	Select when longer reset hold time is needed and board space allows 6-pin package
MAX6375XR22+T	1.22V threshold, 200ms delay, 2.5µA supply current, SC70-5 package	Higher threshold tolerance (±2.5%), different pinout, no factory-programmed delay variants	Choose for legacy MAXIM-design ecosystems where SC70 footprint is already allocated

Compared with TPS3808G12DBVR and MAX6375XR22+T, the APX803L05-12SA-7 delivers tighter threshold accuracy, lower quiescent current, and exact 55ms timing-making it optimal for space-constrained, battery-sensitive designs requiring minimal external components and predictable reset behavior.

Availability

APX803L05-12SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart meter communication ICs requiring stable component supply with guaranteed long-term sourcing.

Supply support for APX803L05-12SA-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 centers across Asia, Europe, and the US and manufacturing in IATF 16949-certified facilities.

The APX803L series belongs to Diodes' precision power-supervision product line, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-operated and energy-conscious embedded systems.

FAQ

What is the absolute maximum supply voltage for APX803L05-12SA-7?

The absolute maximum V_CC rating is 6.0V. Operation above this level risks permanent damage. Recommended operating range is 0.9V to 5.5V, with full specification compliance guaranteed from 1.02×V_TH (1.224V) to 5.5V per datasheet Section 5.

Can APX803L05-12SA-7 monitor voltages other than 1.2V?

No. The "12" in the part number denotes factory-trimmed 1.2V detection threshold. Other thresholds (e.g., 1.3V–5.0V) require different orderable numbers like APX803L20-xxSA-7 (2.0V) or APX803L40-xxSA-7 (4.0V). No external resistor network can alter the internal reference.

Is the 55ms reset timeout adjustable?

No. The "05" suffix indicates fixed 55ms timeout, factory-programmed during wafer test. Alternative delays (0ms, 220ms, 450ms) are offered only as distinct part numbers (e.g., APX803L20-xxSA-7 = 220ms), not user-configurable.

Does APX803L05-12SA-7 meet automotive qualification standards?

This specific variant is not AEC-Q100 qualified. Diodes offers automotive-grade versions under separate part numbering (e.g., APX803L05-12SA-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. Contact Diodes sales for qualified alternatives.

APX803L05-12SA-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:: 1.2V

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

APX803L05-12SA-7 FAQ

1.How can I place an order for APX803L05-12SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L05-12SA-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 APX803L05-12SA-7 reliable?

The price and inventory of APX803L05-12SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-12SA-7 is usually 5 days.

3.What payment methods are accepted for APX803L05-12SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-12SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L05-12SA-7?

APX803L05-12SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L05-12SA-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 APX803L05-12SA-7?

For technical support, including APX803L05-12SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-12SA-7 requirements.

6.How does Aetrix verify that APX803L05-12SA-7 is sourced from the original manufacturer or authorized distributors?

All APX803L05-12SA-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 APX803L05-12SA-7 meets industry standards.

7.What is the process for return or replacement of APX803L05-12SA-7?

All APX803L05-12SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-12SA-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 APX803L05-12SA-7 part is unused and in its original packaging.

Return procedure for APX803L05-12SA-7:

1.Submit a request within 90 days.

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

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