My Inquiry
My Account
Diodes Incorporated APX803L05-29SR-7
- Part No.:
- APX803L05-29SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L05-29SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23R-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
APX803L05-29SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.9V 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 in battery-powered instrumentation and portable embedded systems.
For engineers reviewing the APX803L05-29SR-7 datasheet, APX803L05-29SR-7 pinout, APX803L05-29SR-7 application, or APX803L05-29SR-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current impact on battery life, and SOT23R package compatibility with high-density PCB layouts.
Technical Context
The APX803L05-29SR-7 integrates a precision bandgap reference and comparator to monitor VCC against a factory-trimmed 2.9V threshold. Its internal hysteresis (0.01 × VTH) prevents oscillation during slow-rising/falling supply transitions.
Reset assertion occurs within 20µs of VCC dropping below 2.9V, and release requires VCC to exceed 2.9V + hysteresis. The 55ms timeout is fixed and temperature-stable (±10% over –40°C to +125°C), enabling reliable power-up sequencing in microcontroller-based systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.9V ±1.5% - ensures accurate brown-out detection for 3.3V I/O domain logic without false resets |
| Supply Current | 1.0µA (typ.) - enables multi-year operation in coin-cell–powered IoT sensors |
| Reset Timeout | 55ms - provides sufficient hold time for ARM Cortex-M boot ROM initialization |
| Output Type | Open-drain, active-low - supports wired-OR reset bus sharing across multiple supervisors |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and portable medical devices |
| Hysteresis | 0.01 × VTH (29mV) - eliminates chatter during noisy or slowly recovering power rails |
| Response Time | 20µs - guarantees sub-microsecond fault detection for real-time safety-critical monitoring |
Pinout & Package
SOT23R (3-pin) package with 0.95mm pitch, JEDEC MO-178AA compliant, optimized for automated placement and thermal performance (θJA = 200°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path; must be connected directly to system power plane for noise immunity |
| 2 | RESET | Open-drain active-low output; requires external pull-up to monitored VCC or higher rail |
| 3 | VCC | Power input pin; supplies internal circuitry and sets detection reference via internal divider |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA typ. - reduces standby power by >95% vs. legacy 10µA supervisors, critical for energy harvesting nodes |
| Fixed 2.9V Threshold | Factory-trimmed at wafer level - eliminates external resistor network and layout sensitivity |
| 55ms Reset Delay | Internally generated, no capacitor required - improves BOM simplicity and long-term timing stability |
| Open-Drain Output | Supports 5.5V max sink voltage - allows direct interface to 3.3V/5V logic families and multi-drop reset buses |
| RoHS/Green Compliance | Lead-free, halogen- and antimony-free - meets IPC-1752A material declaration requirements for EU/China markets |
Applications
| Industrial PLC I/O Module | Portable ECG Monitor |
|---|---|
Use Scenario: Monitors 3.3V auxiliary supply powering analog front-end and ADC in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until stable 3.3V rail is confirmed post-power-up or brown-out recovery. Use Value: Prevents firmware execution with invalid reference voltage, eliminating corrupted sensor readings and communication faults. |
Use Scenario: Supervises coin-cell–powered MCU and op-amp bias rails in handheld cardiac diagnostic equipment. IC Role / Device Role / Timing Role: Detects 2.9V threshold drop indicating end-of-battery-life or sudden load surge. Use Value: Triggers graceful shutdown before data loss, preserving last 30 seconds of waveform buffer and calibration state. |
| Smart Home Hub Controller | Automotive Body Control Module (Non-AEC) |
Use Scenario: Validates 5V USB-C powered SoC core rail during hot-plug insertion and transient load switching. IC Role / Device Role / Timing Role: Generates 55ms RESET pulse to synchronize Linux kernel boot after power stabilization. Use Value: Eliminates boot hangs caused by insufficient hold time on buck converter soft-start outputs. |
Use Scenario: Monitors 3.3V CAN transceiver supply in non-safety-critical lighting control units. IC Role / Device Role / Timing Role: Provides deterministic reset timing independent of microcontroller's internal LVD circuit. Use Value: Ensures CAN node reinitialization aligns with physical layer readiness, reducing bus arbitration errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA29DPWR | 2.9V threshold, 350ms default delay, 0.5µA ICC - longer timeout, lower current | Requires design adjustment for extended reset hold time; better suited for FPGA configuration sequencing | Select when longer reset duration is needed and ultra-low ICC dominates power budget |
| MAX809SEUR+T | 2.93V threshold, 240ms delay, 12µA ICC - higher current, tighter VTH tolerance (±1.0%) | Higher supply current limits use in multi-year battery applications; preferred where precision timing is critical | Select when ±1.0% threshold accuracy is mandatory and system can tolerate 12× higher quiescent draw |
Compared with TLV803EA29DPWR and MAX809SEUR+T, the APX803L05-29SR-7 delivers optimal balance of low ICC (1µA), production-proven 55ms timing, and industrial temperature range - making it ideal for cost-sensitive, battery-constrained embedded designs requiring predictable, minimal-footprint supervision.
Availability
APX803L05-29SR-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, portable medical monitors, smart home hubs, and automotive body control units requiring stable component supply and long-lifecycle support.
Supply support for APX803L05-29SR-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 power monitoring in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L05-29SR-7?
The APX803L05-29SR-7 has a nominal reset threshold of 2.90V with a guaranteed tolerance of ±1.5% over temperature (–40°C to +85°C), corresponding to 2.8565V minimum and 2.9435V maximum under specified operating conditions.
Does APX803L05-29SR-7 require an external pull-up resistor on the RESET pin?
Yes - the RESET pin is open-drain and active-low, requiring an external pull-up resistor to a valid logic rail (e.g., VCC or 3.3V). Typical values range from 10kΩ to 100kΩ, selected based on bus capacitance and rise-time requirements.
Can APX803L05-29SR-7 operate with supply voltages below 2.9V?
Yes - it functions down to 0.9V VCC per Recommended Operating Conditions, but reset assertion only occurs when VCC falls below 2.9V. Below 0.9V, device behavior is undefined and not characterized.
Is APX803L05-29SR-7 pin-compatible with other APX803L variants in SOT23R package?
Yes - all APX803L variants in SR package share identical 3-pin SOT23R pinout (GND, RESET, VCC), enabling drop-in replacement across threshold and delay options without PCB redesign.
APX803L05-29SR-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:
- 2.9V
- 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:
- SOT23R
APX803L05-29SR-7 FAQ
1.How can I place an order for APX803L05-29SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L05-29SR-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 APX803L05-29SR-7 reliable?
The price and inventory of APX803L05-29SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L05-29SR-7 is usually 5 days.
3.What payment methods are accepted for APX803L05-29SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L05-29SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L05-29SR-7?
APX803L05-29SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L05-29SR-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 APX803L05-29SR-7?
For technical support, including APX803L05-29SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L05-29SR-7 requirements.
6.How does Aetrix verify that APX803L05-29SR-7 is sourced from the original manufacturer or authorized distributors?
All APX803L05-29SR-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 APX803L05-29SR-7 meets industry standards.
7.What is the process for return or replacement of APX803L05-29SR-7?
All APX803L05-29SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L05-29SR-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 APX803L05-29SR-7 part is unused and in its original packaging.
Return procedure for APX803L05-29SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L05-29SR-7 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
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…
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…
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…
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…
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…
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.
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.…
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…
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…
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…
