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Diodes Incorporated APX803L-30SR-7
- Part No.:
- APX803L-30SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L-30SR-7.pdf
- Description:
- RESET GENERATOR SOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,786
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Product details
Overview
APX803L-30SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 3.0V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 220ms reset timeout. It features open-drain active-low RESET output and operates across -40°C to +85°C ambient range in battery-powered and embedded digital systems.
For engineers reviewing the APX803L-30SR-7 datasheet, APX803L-30SR-7 pinout, APX803L-30SR-7 application, or APX803L-30SR-7 equivalent, key selection criteria include fixed 3.0V detection level, SOT23R package compatibility, 220ms recovery delay, low-quiescent-current supervision, and reset timing behavior under VCC brownout conditions.
Technical Context
The APX803L-30SR-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator monitors VCC against a factory-trimmed 3.0V threshold and asserts an open-drain RESET signal when VCC drops below that level.
Reset remains asserted until VCC rises above the release voltage (VTH_H = VTH_L + VHYS), followed by a fixed 220ms timeout before deassertion. No external components are required-only a 100nF bypass capacitor on VCC is recommended per typical application circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 3.0V ±1.5% - factory-trimmed detection level ensures reliable µP reset at defined supply rail margin |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - enables multi-year operation in coin-cell or energy-harvesting systems |
| Reset Timeout | 220ms - guarantees sufficient hold time for processor initialization and peripheral stabilization |
| Output Type | Open-drain, active-low - supports wired-OR reset bus and flexible pull-up voltage selection (up to 5.5V) |
| Response Time | ≤20µs - fast detection of rapid VCC collapse prevents system lockup during transient faults |
| Operating Temp | -40°C to +85°C - validated for industrial and portable equipment environments without derating |
| VCC Range | 0.9V to 5.5V - supports supervision of 1.2V–3.3V logic rails and legacy 5V systems |
Pinout & Package
SOT23R (3-pin) package: ultra-compact surface-mount outline with 0.95mm pitch, JEDEC MO-178 compliant, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected directly to system ground plane |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up resistor to define logic-high voltage level |
| 3 | VCC | Power input pin; supplies internal circuitry and powers comparator reference; bypass with 100nF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| No external components needed | Internal voltage reference, hysteresis, and timing eliminate discrete resistors/capacitors - reduces BOM count and layout area |
| Four factory-set delay options | 0ms/55ms/220ms/450ms variants allow precise match to processor reset timing requirements without design iteration |
| High threshold accuracy | ±1.5% over temperature ensures consistent reset behavior across full operating range - critical for fail-safe operation |
| Ultra-low power consumption | 1µA typical ICC enables use in always-on monitoring nodes where leakage dominates battery life |
| Lead-free & RoHS-compliant | Fully compliant with EU Directive 2015/863/EU (RoHS 3); halogen- and antimony-free "Green" construction |
Applications
| Smartphone Power Sequencing | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors main PMIC output (3.0V rail) during cold start and brownout events in smartphone application processors. IC Role / Device Role / Timing Role: Voltage supervisor generating active-low reset pulse to hold AP in reset until stable 3.0V is confirmed and 220ms timeout expires. Use Value: Prevents boot corruption by ensuring SoC only exits reset after both voltage stability and minimum hold time are satisfied. | Use Scenario: Supervises 3.0V auxiliary supply powering isolated analog input circuitry in programmable logic controller modules. IC Role / Device Role / Timing Role: Detects undervoltage on sensor interface rail and asserts RESET to halt data acquisition until supply recovers. Use Value: Eliminates erroneous ADC readings caused by marginal supply voltage - improves measurement integrity in harsh EMI environments. |
| Medical Wearable Sensor Hub | Automotive Body Control Module (BCM) |
Use Scenario: Provides supply monitoring for ultra-low-power BLE SoC and biosensor front-end in patch-style wearable devices. IC Role / Device Role / Timing Role: Resets microcontroller when coin-cell voltage drops below 3.0V threshold, triggering low-battery alert and graceful shutdown. Use Value: Extends usable battery life by enabling accurate end-of-life detection without additional sensing circuitry. | Use Scenario: Supervises 3.0V domain powering LIN transceivers and door-lock actuator drivers in non-safety-critical BCM subsystems. IC Role / Device Role / Timing Role: Generates system-wide reset signal upon 3.0V rail collapse, synchronizing recovery of multiple submodules. Use Value: Ensures deterministic restart behavior after load-dump or battery-disconnect events - improves field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L-30SA-7 | SOT23 (non-R variant); identical electrical specs but different leadframe geometry and marking layout | Same footprint compatibility; differs only in mechanical tolerances and tape-and-reel orientation | Select SA for legacy board designs using original SOT23 land pattern; SR preferred for new designs requiring tighter placement tolerance |
| TLV803EB30DBZR | Texas Instruments part with 3.0V threshold, 200ms delay, 0.8µA ICC, but ±2.5% accuracy and no hysteresis option | Higher accuracy drift over temperature; lacks configurable delay variants; requires external RC for timing adjustment | Choose only if TI supply chain preference outweighs need for tighter threshold tolerance and factory-set timing |
Compared with APX803L-30SA-7, the SR variant offers improved placement repeatability in high-speed pick-and-place; versus TLV803EB30DBZR, it delivers superior accuracy and eliminates timing component dependencies - reducing validation effort and long-term calibration risk.
Availability
APX803L-30SR-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, industrial PLC I/O modules, medical wearable sensor hubs, and automotive body control modules requiring stable component supply across extended production lifecycles.
Supply support for APX803L-30SR-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 reset generation in space-constrained and battery-sensitive embedded systems.
FAQ
What is the exact reset threshold voltage for APX803L-30SR-7?
The APX803L-30SR-7 has a factory-trimmed nominal reset threshold of 3.0V with guaranteed accuracy of ±1.5% over -40°C to +85°C ambient temperature. This value is fixed internally and cannot be adjusted externally - confirmed in Electrical Characteristics table (VTH parameter, DS38171 Rev. 3-2, page 4).
Does APX803L-30SR-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 a valid logic-high voltage (e.g., 1.8V, 3.3V, or 5V) is mandatory for proper operation. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Can APX803L-30SR-7 operate with VCC below 1.0V?
No - the recommended minimum VCC is 0.9V, but functional reset assertion is only guaranteed above 1.02×VTH (≥3.06V for this part). Below ~2.5V, internal reference may become unstable; datasheet specifies 0.9V as absolute lower limit but recommends operation ≥1.2V for reliable performance.
Is APX803L-30SR-7 qualified for automotive applications?
No - APX803L-30SR-7 is not AEC-Q100 qualified. Diodes Incorporated explicitly states that automotive-grade versions require separate qualification (PPAP, IATF 16949 manufacturing, AEC-Q100 testing); this part is intended for industrial and consumer applications per its datasheet scope and ordering information.
APX803L-30SR-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:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 0ms Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT23R
APX803L-30SR-7 FAQ
1.How can I place an order for APX803L-30SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-30SR-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 APX803L-30SR-7 reliable?
The price and inventory of APX803L-30SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-30SR-7 is usually 5 days.
3.What payment methods are accepted for APX803L-30SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-30SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-30SR-7?
APX803L-30SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-30SR-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 APX803L-30SR-7?
For technical support, including APX803L-30SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-30SR-7 requirements.
6.How does Aetrix verify that APX803L-30SR-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-30SR-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 APX803L-30SR-7 meets industry standards.
7.What is the process for return or replacement of APX803L-30SR-7?
All APX803L-30SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-30SR-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 APX803L-30SR-7 part is unused and in its original packaging.
Return procedure for APX803L-30SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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