My Inquiry
My Account
Diodes Incorporated APX803L40-16SA-7
- Part No.:
- APX803L40-16SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L40-16SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,221
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
APX803L40-16SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 1.6V threshold detection with ±1.5% accuracy, 450ms reset timeout, 1µA typical supply current, and open-drain active-low RESET output in SOT23 package-used in battery-powered IoT sensors and portable medical devices.
For engineers reviewing the APX803L40-16SA-7 datasheet, APX803L40-16SA-7 pinout, APX803L40-16SA-7 application, or APX803L40-16SA-7 equivalent, key selection criteria include threshold voltage tolerance, reset delay stability over temperature, low-quiescent-current operation in sleep-mode systems, and compatibility with 1.8V/3.3V logic interfaces requiring clean power-up sequencing.
Technical Context
The APX803L40-16SA-7 implements a precision bandgap-based voltage reference with internal hysteresis (0.01×VTH) to prevent oscillation during threshold crossing, and uses a dedicated internal timing circuit to generate a fixed 450ms reset pulse after VCC recovery-guaranteed across -40°C to +85°C ambient range.
Its open-drain RESET output supports wired-OR configuration with external pull-up, sinks up to 20mA, and achieves 20µs response time from VCC drop to RESET assertion, enabling reliable boot-time supervision of ARM Cortex-M0+ microcontrollers and low-voltage FPGAs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.6V ±1.5% - ensures accurate brown-out detection for 1.8V I/O domain power rails |
| Supply Current | 1.0µA typical - enables multi-year operation on coin-cell batteries in always-on monitoring nodes |
| Reset Timeout | 450ms (typ.) - provides sufficient hold-off for slow-ramping DC-DC converters and LDO stabilization |
| Response Time | 20µs - guarantees sub-cycle detection of transient supply dips affecting real-time MCU execution |
| Output Type | Open-drain, active-low - allows flexible voltage-level translation and multi-device reset bus sharing |
| Operating Voltage | 0.9V to 5.5V - supports direct connection to Li-ion battery inputs (2.7–4.2V) and 3.3V/5V system rails |
| Temp Range | -40°C to +85°C - qualified for industrial-grade embedded control and automotive cabin electronics |
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 | Reference ground return path for internal comparator and voltage reference |
| 2 | RESET | Open-drain active-low reset signal output; requires external pull-up to host VCC rail |
| 3 | VCC | Power supply input; powers internal reference, comparator, and timing circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.6V threshold | Factory-trimmed bandgap reference eliminates need for external resistor dividers or calibration |
| 450ms reset delay | Internally generated timeout ensures deterministic release timing without external RC components |
| ±1.5% threshold accuracy | Guaranteed over full temperature and supply range-critical for fail-safe power sequencing in safety-critical firmware |
| 1µA supply current | Reduces standby power loss by >95% vs. legacy reset ICs, extending battery life in wireless sensor nodes |
| No external components | Self-contained supervision function reduces BOM count, PCB area, and qualification effort |
Applications
| Wearable Health Monitor | Smart Home Sensor Hub |
|---|---|
Use Scenario: Continuous ECG sampling powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 1.8V LDO output to assert RESET if voltage sags below 1.6V during RF burst, holding MCU in reset until stable. Use Value: Prevents corrupted ADC readings and BLE packet loss caused by undervoltage MCU operation. |
Use Scenario: Multi-sensor node (temp/humidity/motion) operating from 3.3V buck converter with light-load efficiency optimization. IC Role / Device Role / Timing Role: Supervises converter output and triggers 450ms RESET pulse to ensure complete firmware reload after cold start or brownout. Use Value: Eliminates boot hangs due to marginal power-up timing, improving field reliability in unattended deployments. |
| Industrial PLC I/O Module | Portable Diagnostic Equipment |
Use Scenario: DIN-rail mounted controller with 24V-to-3.3V conversion feeding FPGA and isolated CAN transceivers. IC Role / Device Role / Timing Role: Detects 3.3V rail collapse during ESD event or load dump, asserting active-low RESET to halt state machine execution. Use Value: Enables deterministic fault containment and safe state recovery without external watchdog intervention. |
Use Scenario: Handheld ultrasound probe with LiPo battery, analog front-end, and ARM-based processing unit. IC Role / Device Role / Timing Role: Provides 1.6V supervision of 1.8V analog supply to prevent amplifier saturation and ADC clipping during battery discharge. Use Value: Maintains diagnostic image fidelity by blocking invalid acquisitions under low-battery conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E16DBVR | 1.6V threshold, 200ms reset delay, 0.5µA IQ, SOT23-3 | Lacks hysteresis specification; tighter temp drift (±100ppm/°C vs. ±50ppm/°C) | Prefer for ultra-low-power designs where shorter reset hold time suffices |
| MAX809SEUR+T | 1.6V threshold, 240ms reset delay, 10µA IQ, SOT23-3 | Higher supply current; no guaranteed hysteresis; wider threshold tolerance (±2.5%) | Acceptable for cost-sensitive consumer applications with less stringent power or accuracy requirements |
Compared with TLV803E16DBVR and MAX809SEUR+T, the APX803L40-16SA-7 delivers superior threshold stability over temperature, lower quiescent current than MAX809, and longer factory-calibrated reset timeout-making it optimal for industrial and medical edge devices requiring robust power sequencing.
Availability
APX803L40-16SA-7 is available at Aetrix Electronics and suitable for battery-powered wearables, industrial sensor nodes, and portable medical diagnostics requiring stable component supply and long-term lifecycle support.
Supply support for APX803L40-16SA-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-constrained and energy-sensitive embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L40-16SA-7?
The APX803L40-16SA-7 has a nominal reset threshold of 1.6V with a guaranteed accuracy of ±1.5% over -40°C to +85°C ambient temperature and 0.9V to 5.5V supply range. This is factory-trimmed using bandgap reference technology and does not require external calibration.
Does APX803L40-16SA-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 to the host system's logic rail (e.g., 1.8V, 3.3V, or 5V) is mandatory. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Can APX803L40-16SA-7 operate from a 1.2V supply?
No-the minimum operating supply voltage is 0.9V, but the device requires VCC ≥ 1.02×VTH (≥1.632V) to guarantee proper reset timeout functionality. At 1.2V supply, the internal timing circuit and reference may not stabilize, resulting in undefined reset behavior.
Is APX803L40-16SA-7 qualified for automotive applications?
The APX803L40-16SA-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., APX803L40-16SA-7Q) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening-but this specific part number is rated for industrial use only (-40°C to +85°C).
APX803L40-16SA-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:
- 1.6V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 292ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX803L40-16SA-7 FAQ
1.How can I place an order for APX803L40-16SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L40-16SA-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 APX803L40-16SA-7 reliable?
The price and inventory of APX803L40-16SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L40-16SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L40-16SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L40-16SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L40-16SA-7?
APX803L40-16SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L40-16SA-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 APX803L40-16SA-7?
For technical support, including APX803L40-16SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L40-16SA-7 requirements.
6.How does Aetrix verify that APX803L40-16SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L40-16SA-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 APX803L40-16SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L40-16SA-7?
All APX803L40-16SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L40-16SA-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 APX803L40-16SA-7 part is unused and in its original packaging.
Return procedure for APX803L40-16SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX803L40-16SA-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…
