My Inquiry
My Account
Diodes Incorporated APX803L20-44W5-7
- Part No.:
- APX803L20-44W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L20-44W5-7.pdf
- Description:
- Reset Generator SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,143
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
APX803L20-44W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.2V threshold detection (±1.5% accuracy), 220ms reset timeout, open-drain active-low RESET output, and ultra-low 1µA typical supply current. It monitors VCC in battery-powered embedded systems such as portable medical devices, IoT edge sensors, and low-power industrial controllers.
For engineers reviewing the APX803L20-44W5-7 datasheet, APX803L20-44W5-7 pinout, APX803L20-44W5-7 application, or APX803L20-44W5-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for power-supply monitoring in space-constrained, energy-sensitive designs.
Technical Context
The APX803L20-44W5-7 implements a fixed-threshold voltage detection architecture with internal hysteresis (0.01×VTH) to prevent oscillation during VCC recovery. Its reset logic asserts an active-low signal when VCC drops below 2.2V and holds it until VCC exceeds the release threshold (VTH + hysteresis), ensuring reliable µP initialization.
It operates across –40°C to +85°C ambient, supports 0.9V–5.5V supply range, and features temperature-stable threshold drift (50 ppm/°C), enabling robust performance in thermally variable environments without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.2V ±1.5% - precisely triggers reset at nominal system supply rail for 2.2V LDO or battery monitoring |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries without measurable drain |
| Reset Timeout | 220ms (typ.) - ensures sufficient hold time for slow-ramping µP clocks and memory initialization |
| Output Type | Open-drain, active-low - allows wired-OR configuration with other reset sources and flexible pull-up voltage selection |
| Operating Temp | –40°C to +85°C - certified for industrial-grade deployment in uncontrolled ambient environments |
| VCC Range | 0.9V to 5.5V - supports direct connection to 1.2V–3.3V logic rails and legacy 5V systems |
| Threshold Hysteresis | 0.01×VTH (22mV) - prevents chatter during marginal VCC recovery near threshold |
Pinout & Package
SOT25 (5-pin) package with NC pins; compact footprint ideal for high-density PCB layouts where 3-pin variants are insufficient for routing isolation or thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Power input pin - must be decoupled with ≥100nF ceramic capacitor adjacent to pin for noise immunity |
| 2 | RESET | Open-drain active-low reset output - requires external pull-up resistor to host logic rail (e.g., 10kΩ to 3.3V) |
| 3 | GND | Analog ground reference - must connect directly to low-impedance system ground plane |
| 4, 5 | NC | No connection - left floating per design; no internal circuitry or bonding wire attached |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.2V threshold | Eliminates external resistor divider, reducing BOM count and layout area while guaranteeing ±1.5% accuracy over temperature |
| 220ms factory-set delay | Matches typical µP power-on reset timing requirements without external RC network or firmware delay loops |
| 1µA supply current | Enables continuous supervision in always-on battery-backed systems (e.g., smart meter backup mode) with negligible impact on runtime |
| Open-drain output | Supports level-shifting across mixed-voltage domains and enables shared reset bus with multiple supervisors |
| SOT25 package | Provides dedicated GND and VCC pins plus NC pads for improved thermal dissipation and reduced trace coupling vs. 3-pin SOT23 |
Applications
| Portable ECG Monitors | Smart Meter Backup Circuits |
|---|---|
Use Scenario: Continuous battery-powered operation with periodic BLE transmission and analog front-end sampling. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during brown-out events to prevent corrupted ADC reads or flash writes. Use Value: 220ms timeout ensures full analog settling and RF startup before µP resumes execution; 1µA quiescent current extends 10-year battery life. | Use Scenario: Mains-powered utility meter with supercapacitor backup maintaining RTC and nonvolatile registers during grid outage. IC Role / Device Role / Timing Role: Detects supercap voltage decay below 2.2V and initiates controlled shutdown sequence via µP interrupt. Use Value: ±1.5% threshold accuracy guarantees consistent switchover point across temperature, eliminating false resets in outdoor enclosures. |
| Industrial PLC I/O Modules | Wireless Sensor Node Controllers |
Use Scenario: DIN-rail mounted module powered by 24V DC-DC converter with local 3.3V rail for FPGA and communication ICs. IC Role / Device Role / Timing Role: Monitors 3.3V rail integrity and forces FPGA reconfiguration if supply dips due to transient load spikes. Use Value: Open-drain output interfaces directly to FPGA's PROG_B pin; NC pins in SOT25 allow clean separation of power and ground return paths. | Use Scenario: Sub-GHz LoRa node powered by primary lithium thionyl chloride cell, waking every 15 minutes for sensor read and transmit. IC Role / Device Role / Timing Role: Ensures µC only boots when cell voltage remains above safe operating minimum before initiating measurement cycle. Use Value: 50 ppm/°C tempco maintains stable trip point across –25°C to +60°C field deployments; no external components reduce failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L20-44SA-7 | Same 2.2V threshold and 220ms delay, but in 3-pin SOT23 package with no NC pins | Lacks dedicated NC pins; less suitable for high-noise industrial layouts requiring ground isolation | Select when board space is critical and routing complexity permits shared ground return |
| TLV803E22DBZR | 2.2V threshold, 200ms delay, 0.5µA supply current, but only ±2.5% accuracy and no hysteresis spec | Lower accuracy increases risk of spurious resets in noisy environments; lacks guaranteed hysteresis margin | Choose only for cost-sensitive consumer applications where ±2.5% tolerance is acceptable |
Compared with APX803L20-44SA-7, the W5 variant offers superior layout flexibility and noise immunity via NC pins; versus TLV803E22DBZR, it delivers tighter threshold accuracy and defined hysteresis-critical for industrial reliability.
Availability
APX803L20-44W5-7 is available at Aetrix Electronics and suitable for portable medical devices, smart meter backup circuits, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle assurance.
Supply support for APX803L20-44W5-7 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 protection applications.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy power-rail monitoring in battery-critical and industrial embedded systems.
FAQ
What is the exact reset threshold voltage for APX803L20-44W5-7?
The APX803L20-44W5-7 has a factory-trimmed reset threshold of 2.2V with ±1.5% accuracy over temperature (–40°C to +85°C). This value is fixed internally and cannot be adjusted externally. The hysteresis is 0.01×VTH (22mV), ensuring stable release at 2.222V after recovery.
Can APX803L20-44W5-7 drive a 10kΩ pull-up resistor to 5V?
Yes. The open-drain RESET output is rated for 20mA sink current and guarantees VOL ≤ 0.4V at ISINK = 3.5mA. With a 10kΩ pull-up to 5V, the resulting sink current is 0.5mA - well within specification and ensuring clean logic-low assertion under all operating conditions.
Is the SOT25 package RoHS-compliant and lead-free?
Yes. APX803L20-44W5-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, halogen-free, and antimony-free per Diodes Incorporated's "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb). The SOT25 package uses matte-tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1.
Does APX803L20-44W5-7 require an external bypass capacitor?
Yes. A minimum 100nF ceramic capacitor must be placed between VCC and GND, as close as possible to the device pins. This stabilizes the internal reference and prevents false triggering from supply transients - omission violates recommended operating conditions and degrades reset timing accuracy.
APX803L20-44W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 143ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
APX803L20-44W5-7 FAQ
1.How can I place an order for APX803L20-44W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-44W5-7 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 APX803L20-44W5-7 reliable?
The price and inventory of APX803L20-44W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-44W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-44W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-44W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-44W5-7?
APX803L20-44W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-44W5-7 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 APX803L20-44W5-7?
For technical support, including APX803L20-44W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-44W5-7 requirements.
6.How does Aetrix verify that APX803L20-44W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-44W5-7 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 APX803L20-44W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-44W5-7?
All APX803L20-44W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-44W5-7, 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 APX803L20-44W5-7 part is unused and in its original packaging.
Return procedure for APX803L20-44W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L20-44W5-7 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…
