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

Diodes Incorporated APX803L05-47SA-7

Name: APX803L05-47SA-7
Brand: Diodes Incorporated
SKU: APX803L05-47SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX803L05-47SA-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

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

Datasheet:: APX803L05-47SA-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

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Product details

Overview

APX803L05-47SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 5.0V 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 and portable electronics.

For engineers reviewing the APX803L05-47SA-7 datasheet, APX803L05-47SA-7 pinout, APX803L05-47SA-7 application, or APX803L05-47SA-7 equivalent, key selection criteria include threshold 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 APX803L05-47SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×V_TH) to prevent oscillation during V_CC recovery. Its comparator continuously monitors V_CC against a fixed 5.0V threshold and asserts RESET when V_CC drops below V_TH–100mV within 20µs.

Reset assertion remains active until V_CC exceeds V_TH + hysteresis, followed by a guaranteed 55ms timeout before deassertion. The open-drain output supports external pull-up to any logic rail ≤6.0V and sinks up to 20mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Threshold Voltage	5.0V ±1.5% - ensures reliable reset initiation at nominal 5V supply with minimal false triggering
Supply Current	1.0µA typical - enables multi-year operation in coin-cell–powered IoT sensors without measurable battery drain
Reset Timeout	55ms - provides sufficient hold time for µP initialization while avoiding excessive system boot delays
Response Time	20µs - guarantees rapid fault detection during brownout events before digital logic corruption occurs
Operating Temp	–40°C to +85°C - supports industrial-grade deployment in uncontrolled ambient environments
Output Type	Open-drain, active-low - allows wired-OR reset bus configuration and flexible logic-level interfacing
Hysteresis	0.01×V_TH (50mV) - prevents chatter during slow V_CC recovery near threshold

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.45mm height, gull-wing leads, RoHS-compliant matte tin lead finish.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Reference ground return path for internal comparator and voltage reference
2	RESET	Open-drain output; pulled low during reset condition; requires external pull-up resistor
3	V_CC	Power input pin; supplies internal circuitry and sets operating voltage range (0.9–5.5V)

Key Features

Feature	Design Value
Ultra-low ICC	1.0µA typical supply current minimizes load on primary power rail in energy-constrained systems
Fixed 5.0V Threshold	Factory-trimmed 5.0V detection point eliminates need for external resistive divider or calibration
Temperature-Stable Accuracy	±1.5% over –40°C to +85°C ensures consistent reset behavior across thermal extremes
No External Components	Self-contained operation requires only decoupling capacitor-no external R/C timing network needed
Robust Output Drive	20mA sink capability supports direct interface to µP reset inputs and legacy logic families

Applications

Microcontroller Power Monitoring

Portable Medical Device Supervision

Use Scenario: Monitors 5V supply rail feeding an ARM Cortex-M4 MCU in a handheld diagnostic instrument.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to halt CPU execution during undervoltage conditions.

Use Value: Prevents firmware corruption and data loss by ensuring clean reset before V_CC falls below µP minimum operating voltage.

Use Scenario: Embedded in a battery-powered glucose meter with Li-ion cell and 5V DC-DC converter output.

IC Role / Device Role / Timing Role: Detects 5V rail collapse due to battery depletion or converter failure, initiating safe shutdown sequence.

Use Value: Enables deterministic power-down before analog sensor biasing fails, preserving measurement integrity and user safety.

Industrial PLC I/O Module

Smart Home Hub Power Sequencing

Use Scenario: Integrated into DIN-rail mounted PLC module where 5V logic rail powers FPGA configuration memory and communication PHY.

IC Role / Device Role / Timing Role: Generates synchronized reset pulse to FPGA and transceivers upon 5V rail instability.

Use Value: Eliminates metastability and bus contention during power-up/down by enforcing strict reset timing alignment.

Use Scenario: Used in Wi-Fi-enabled home automation hub with multiple voltage domains (5V, 3.3V, 1.8V).

IC Role / Device Role / Timing Role: Primary 5V supervisor triggering sequenced enable signals for downstream LDOs via GPIO-controlled power switches.

Use Value: Ensures correct power-up order and avoids latch-up in mixed-voltage SoC subsystems during cold start.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3808G01DBVR	2.5µA max ICC, 5.0V threshold ±0.5%, 200ms default delay (adjustable via capacitor)	Requires external timing capacitor; higher accuracy but larger solution size	Select when tighter threshold tolerance and programmable delay outweigh board space constraints
MAX6326UT49D3+	2.0µA max ICC, 4.9V threshold ±2.5%, 140ms fixed delay, push-pull output	Push-pull output eliminates need for pull-up; 4.9V threshold may cause earlier reset than 5.0V design point	Select when simplified output interface and marginally lower trip point are acceptable trade-offs

Compared with TPS3808G01DBVR and MAX6326UT49D3+, the APX803L05-47SA-7 delivers optimal balance of ultra-low ICC, exact 5.0V trip point, and compact SOT23-3 footprint-making it ideal for space- and power-sensitive designs where fixed 55ms timing suffices.

Availability

APX803L05-47SA-7 is available at Aetrix Electronics and suitable for microcontroller supervision, portable medical instrumentation, industrial I/O modules, and smart home hub power sequencing requiring stable component supply and long-term manufacturability.

Supply support for APX803L05-47SA-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 low-power, high-reliability µP reset functions in battery-operated and industrial control systems.

FAQ

What is the exact reset threshold voltage and its tolerance for APX803L05-47SA-7?

The APX803L05-47SA-7 has a factory-set threshold voltage of 5.0V with a guaranteed accuracy of ±1.5% over the full operating temperature range (–40°C to +85°C), corresponding to 4.925V to 5.075V at +25°C and maintaining tight drift up to ±50 ppm/°C.

Does APX803L05-47SA-7 require an external pull-up resistor on the RESET pin?

Yes-the RESET pin is open-drain and active-low, so an external pull-up resistor (typically 10kΩ to 3.3V or 5V) is mandatory to establish a defined logic-high state when not asserted; no internal pull-up is integrated.

Can APX803L05-47SA-7 operate with supply voltages below 5.0V?

Yes-it functions across V_CC = 0.9V to 5.5V, but reset assertion only occurs when V_CC falls below the 5.0V threshold; operation below 0.9V is outside recommended conditions and may result in undefined output behavior.

Is APX803L05-47SA-7 qualified for automotive applications?

No-this variant is not AEC-Q100 qualified; Diodes offers automotive-grade versions (e.g., APX803L05-47SA-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening-but APX803L05-47SA-7 is rated for industrial use only.

APX803L05-47SA-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:: 4.7V

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

APX803L05-47SA-7 FAQ

1.How can I place an order for APX803L05-47SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX803L05-47SA-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 APX803L05-47SA-7 reliable?

The price and inventory of APX803L05-47SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-47SA-7 is usually 5 days.

3.What payment methods are accepted for APX803L05-47SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-47SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX803L05-47SA-7?

APX803L05-47SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX803L05-47SA-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 APX803L05-47SA-7?

For technical support, including APX803L05-47SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-47SA-7 requirements.

6.How does Aetrix verify that APX803L05-47SA-7 is sourced from the original manufacturer or authorized distributors?

All APX803L05-47SA-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 APX803L05-47SA-7 meets industry standards.

7.What is the process for return or replacement of APX803L05-47SA-7?

All APX803L05-47SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-47SA-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 APX803L05-47SA-7 part is unused and in its original packaging.

Return procedure for APX803L05-47SA-7:

1.Submit a request within 90 days.

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

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