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Diodes Incorporated APX803L-48W5-7
- Part No.:
- APX803L-48W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-48W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
APX803L-48W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC supply levels in battery-powered and low-power digital systems. It features a fixed 4.8V detection threshold, ±1.5% accuracy, 1µA typical supply current, 450ms reset timeout, and open-drain active-low RESET output in SOT25 package.
For engineers reviewing the APX803L-48W5-7 datasheet, APX803L-48W5-7 pinout, APX803L-48W5-7 application, or APX803L-48W5-7 equivalent, this device serves as a precision, ultra-low-quiescent-current reset supervisor for portable equipment, embedded controllers, and power-sensitive microprocessor systems requiring reliable brown-out detection and recovery timing control.
Technical Context
The APX803L-48W5-7 implements a comparator-based threshold detection architecture with built-in hysteresis (0.01×VTH) to prevent oscillation during supply ramp-up/down. Its internal reference ensures stable 4.8V trip point across -40°C to +85°C ambient temperature.
It delivers a clean, fast-reset signal (≤20µs response time) with programmable delay options-here configured for 450ms active timeout-enabling system-level power sequencing and safe boot initialization in resource-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Voltage | 4.8 V ±1.5% - precise brown-out threshold for 5V nominal rails with minimal drift over temperature |
| Supply Current | 1.0 µA (typ.) - enables multi-year operation in coin-cell–powered IoT sensors without measurable battery drain |
| Reset Timeout | 450 ms - guarantees sufficient hold time for microcontroller initialization and peripheral stabilization |
| Output Type | Open-drain, active-low - supports wired-OR reset bus architectures and flexible pull-up voltage selection (up to 5.5V) |
| Response Time | ≤20 µs - ensures immediate assertion of RESET upon VCC drop below threshold, critical for data integrity |
| Operating Voltage | 0.9 V to 5.5 V - supports operation down to near-threshold levels, enabling detection even during deep discharge |
| Package | SOT25 (5-pin) - provides GND, VCC, RESET, and two NC pins for mechanical stability and layout flexibility |
Pinout & Package
SOT25 is a 5-pin surface-mount package with 0.95mm pitch; pins 4 and 5 are no-connect (NC), enhancing thermal performance and PCB routing margin while maintaining compatibility with standard pick-and-place tooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up to define logic high level and drive strength |
| 3 | VCC | Supply input for detector circuitry; powers internal bandgap reference and comparator |
| 4 | NC | No internal connection; may be left floating or tied to GND for mechanical reinforcement |
| 5 | NC | No internal connection; electrically isolated; used for package symmetry and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.0 µA typ. - eliminates need for power gating in always-on monitoring nodes |
| Fixed 4.8V threshold | ±1.5% accuracy at +25°C, 50 ppm/°C tempco - meets tight tolerance requirements for 5V system supervision |
| Programmable reset timeout | 450 ms option - matches typical MCU boot sequences without external RC timing components |
| Open-drain output | Supports 5.5V max sink voltage - allows interfacing with higher-voltage logic domains via pull-up |
| RoHS & green compliant | Lead-free, halogen-free, antimony-free - satisfies global environmental compliance mandates for consumer and industrial products |
Applications
| Smartphone Power Sequencing | Industrial PLC Controller Supervision |
|---|---|
|
Use Scenario: Monitors main PMIC output during cold start and battery recovery cycles in mobile SoC platforms. IC Role / Device Role / Timing Role: Voltage detector providing active-low reset pulse with 450ms hold time to ensure complete SoC initialization before firmware execution. Use Value: Prevents corrupted boot due to premature release of reset, leveraging 1µA quiescent current to extend standby battery life. |
Use Scenario: Supervises 5V auxiliary rail powering FPGA configuration and I/O drivers in modular automation controllers. IC Role / Device Role / Timing Role: Brown-out detector asserting RESET until VCC stabilizes above 4.8V, with hysteresis preventing chatter during noisy line transients. Use Value: Ensures deterministic startup after power interruption, using ±1.5% threshold accuracy to avoid false triggers in electrically harsh environments. |
| Portable Medical Sensor Node | Automotive Body Control Module (BCM) |
|
Use Scenario: Watches coin-cell–supplied 3.3V rail in wireless ECG patch during sleep/wake transitions. IC Role / Device Role / Timing Role: Low-power supervisor enabling wake-from-sleep reset synchronization with MCU's low-power mode exit sequence. Use Value: Delivers 20µs response time and 450ms timeout to align with sensor firmware handshaking, minimizing energy overhead per wake cycle. |
Use Scenario: Monitors 5V domain powering CAN transceivers and LIN interface ICs in non-safety-critical BCM subassemblies. IC Role / Device Role / Timing Role: Reset generator ensuring proper state machine initialization after ignition-on voltage ramp, with robust noise immunity via internal hysteresis. Use Value: Provides AEC-Q200–compatible reliability (via Diodes' automotive-capable manufacturing) without requiring external filtering components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX803L-48SA-7 | SOT23-3 package (3-pin); same 4.8V threshold, 450ms timeout, and 1µA supply current | Lacks NC pins; smaller footprint but reduced thermal mass and no mechanical redundancy | Select when board space is constrained and thermal load is minimal; verify PCB pad layout compatibility |
| TLV803E48DBZR | Texas Instruments part; 4.8V threshold, 200ms default timeout (non-configurable), 0.5µA supply current | Fixed 200ms delay vs. APX803L-48W5-7's 450ms; tighter 0.5% initial accuracy but higher tempco (100 ppm/°C) | Choose if lower quiescent current is prioritized over longer reset hold time and wider temperature stability |
Compared with APX803L-48SA-7, the W5 variant offers enhanced thermal dissipation and layout flexibility via NC pins; versus TLV803E48DBZR, it trades marginal current reduction for superior temperature stability and configurable timing-critical for industrial and medical applications demanding long-term reliability.
Availability
APX803L-48W5-7 is available at Aetrix Electronics and suitable for portable medical devices, industrial PLCs, and automotive body control modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for APX803L-48W5-7 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, with design and manufacturing facilities certified to IATF 16949 and ISO 9001 standards.
The APX803L series belongs to Diodes' precision power management portfolio, engineered specifically for ultra-low-power supervisory functions in battery-operated and energy-conscious systems where reliability and minimal current draw are paramount.
FAQ
What is the exact detection threshold voltage of APX803L-48W5-7?
The APX803L-48W5-7 has a factory-trimmed detection threshold of 4.8 V with ±1.5% accuracy at +25°C. This value remains stable across temperature (50 ppm/°C) and ensures consistent brown-out detection for 5V nominal supplies without external calibration.
Can APX803L-48W5-7 drive a 10kΩ pull-up resistor to 5V?
Yes-the open-drain RESET output can sink up to 20 mA and maintains VOL ≤0.4 V at ISINK = 3.5 mA. With a 10kΩ pull-up to 5V, the resulting sink current (~0.5 mA) is well within specification, ensuring clean logic-low assertion and fast rise time on release.
Is the 450ms reset timeout adjustable externally?
No-the 450ms timeout is factory-programmed and fixed for the "40" suffix variant (APX803L40-XXW5-7). The APX803L-48W5-7 uses this configuration; no external capacitor or resistor can modify the delay, ensuring predictable, repeatable reset behavior in safety-critical designs.
Does APX803L-48W5-7 require an input bypass capacitor?
A 100nF ceramic capacitor between VCC and GND is recommended per the typical application circuit in DS38171. It suppresses high-frequency noise on the monitored rail and prevents false resets caused by transient dips, especially in switching-power-supply environments.
APX803L-48W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.8V
- 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:
- SOT-25
APX803L-48W5-7 FAQ
1.How can I place an order for APX803L-48W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-48W5-7 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-48W5-7 reliable?
The price and inventory of APX803L-48W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-48W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-48W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-48W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-48W5-7?
APX803L-48W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-48W5-7 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-48W5-7?
For technical support, including APX803L-48W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-48W5-7 requirements.
6.How does Aetrix verify that APX803L-48W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-48W5-7 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-48W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-48W5-7?
All APX803L-48W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-48W5-7, 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-48W5-7 part is unused and in its original packaging.
Return procedure for APX803L-48W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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