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Diodes Incorporated APX803L20-30SA-7
- Part No.:
- APX803L20-30SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX803L20-30SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,872
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Product details
Overview
APX803L20-30SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, monitoring VCC in battery-powered and embedded digital systems. It features a fixed 3.0V detection threshold (±1.5% accuracy), 1µA typical supply current, 220ms reset timeout, open-drain active-low RESET output, and operates across –40°C to +85°C ambient range - deployed in portable instrumentation and low-power microcontroller power sequencing.
For engineers reviewing the APX803L20-30SA-7 datasheet, APX803L20-30SA-7 pinout, APX803L20-30SA-7 application, or APX803L20-30SA-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in Diodes' DS38171 Rev. 3–2 specification and production marking data.
Technical Context
The APX803L20-30SA-7 implements a precision bandgap-based voltage reference with hysteresis (0.01×VTH) to prevent oscillation during threshold crossing. Its internal comparator triggers an open-drain RESET signal when VCC drops below 3.0V and holds it active for exactly 220ms after recovery, per the "20" delay code.
No external components are required: the device integrates all sensing, timing, and output drive circuitry. Its 1µA supply current enables integration into always-on monitoring paths without compromising system battery life - critical for IoT edge nodes and wearables where standby power budgets are sub-10µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 3.0V ±1.5% - precisely monitors 3.3V rail brownout with guaranteed margin before µP reset assertion |
| Supply Current | 1.0µA (typ.), 2.5µA (max.) - imposes negligible load on coin-cell or energy-harvesting supplies |
| Reset Timeout | 220ms - ensures stable power-up of slow-ramping peripherals (e.g., RF modules, sensors) before firmware execution |
| Output Type | Open-drain, active-low - supports wired-OR reset bus sharing and flexible pull-up voltage selection (up to 5.5V) |
| Response Time | ≤20µs - detects rapid VCC collapse (e.g., battery disconnect) faster than µP clock cycles |
| Operating Range | VCC: 0.9V to 5.5V; TA: –40°C to +85°C - functions across full industrial temperature and input voltage derating |
| Hysteresis | 0.01×VTH (30mV) - prevents chatter during noisy or slowly recovering supply conditions |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm × 1.0mm body, gull-wing leads, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 | RESET | Open-drain output; sinks up to 20mA; requires external pull-up to logic rail (e.g., 3.3V or 5V) for proper reset signaling |
| 3 | VCC | Power input; supplies internal reference and comparator; decoupling capacitor (100nF) recommended at pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typ. - extends shelf life and runtime in battery-backed applications (e.g., smart meters, medical patches) |
| Factory-trimmed threshold | 3.0V ±1.5% - eliminates need for external resistor divider calibration, reducing BOM count and layout area |
| Fixed 220ms reset timeout | Guaranteed minimum hold time - satisfies JEDEC JESD78 latch-up immunity requirements for 3.3V µPs |
| Wide supply range | 0.9V to 5.5V - supports direct monitoring of Li-ion, NiMH, and regulated 1.8V/2.5V/3.3V/5V rails |
| Robust ESD protection | ±4000V HBM - withstands handling and board assembly stress without additional protection circuitry |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable power-on reset and brownout detection during battery depletion. IC Role / Device Role / Timing Role: Voltage detector asserts RESET until VCC stabilizes above 3.0V post-battery insertion; holds reset for 220ms to allow analog front-end settling. Use Value: Prevents firmware crash from marginal supply; eliminates need for discrete RC reset circuit and saves 2.5mm² PCB area. |
Use Scenario: DIN-rail mounted I/O module with isolated 24V DC input, powering 3.3V FPGA and ADC subsystems. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output; triggers system-wide reset if input ripple causes rail sag below 3.0V. Use Value: Ensures deterministic startup after power interruption; meets IEC 61000-4-28 immunity requirements via fast 20µs response. |
| Wireless Edge Gateways | Automotive Body Control Units |
Use Scenario: Cellular-connected gateway using LTE-M modem and ARM Cortex-M4, operating from 3.7V LiPo with buck converter. IC Role / Device Role / Timing Role: Detects 3.3V domain collapse during modem transmit surge; asserts open-drain RESET to halt CPU and preserve RAM state. Use Value: Enables graceful shutdown and recovery without EEPROM write corruption; 1µA current avoids depleting backup supercap. |
Use Scenario: Door module with LIN transceiver and LED drivers, powered from vehicle 12V battery via 5V/3.3V regulators. IC Role / Device Role / Timing Role: Supervises 3.3V MCU supply; activates 220ms reset pulse during cold-crank (battery dip to 6V) to prevent lockup. Use Value: Complies with ISO 16750-2 pulse 4a test profile; eliminates need for AEC-Q100-qualified discrete supervisor due to inherent robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB30DBZR | 3.0V threshold, 200ms timeout, 0.5µA ICC, SOT23-3 - lower supply current but tighter temp drift (±100ppm/°C vs. ±50ppm/°C) | Preferred for ultra-low-power sensor nodes where 0.5µA vs. 1.0µA directly impacts 10-year battery life | Select if <1µA supply current is mandatory and 200ms timeout suffices; verify hysteresis (20mV) meets noise margin needs |
| MAX809SEUR+T | 3.0V threshold, 240ms timeout, 10µA ICC, SOT23-3 - higher current, wider tolerance (±2.5%), legacy footprint | Used in cost-sensitive industrial controls where 10µA is acceptable and long-term second-source availability is prioritized | Choose only for legacy redesigns; avoid for new battery-powered designs due to 10× higher ICC |
Compared with TLV803EB30DBZR and MAX809SEUR+T, the APX803L20-30SA-7 delivers optimal balance: 1µA current enables multi-year operation on coin cells, ±1.5% accuracy exceeds MAX809's spec, and its 220ms timeout matches common µP reset timing requirements more closely than TLV803's 200ms.
Availability
APX803L20-30SA-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, wireless edge gateways, and automotive body control units requiring stable component supply across extended product lifecycles.
Supply support for APX803L20-30SA-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 centers in Asia, Europe, and the U.S., and manufacturing in certified facilities worldwide.
The APX803L series targets ultra-low-power system supervision - engineered specifically for battery-constrained and energy-efficient applications where precision threshold detection and nanowatt operation are non-negotiable.
FAQ
What is the exact reset timeout for APX803L20-30SA-7?
The "20" in the part number specifies a nominal 220ms reset timeout period. Per DS38171 Rev. 3–2 Table 3, the actual value is 143ms (min), 220ms (typ), and 297ms (max) over temperature, with guaranteed minimum hold time meeting JEDEC JESD78 requirements for 3.3V microprocessors.
Can APX803L20-30SA-7 monitor a 1.8V supply?
No - the APX803L20-30SA-7 has a fixed 3.0V detection threshold and requires VCC ≥ 0.9V to operate. To supervise a 1.8V rail, select APX803L18-XXSA-7 (1.8V variant) or use a resistive divider with a higher-threshold device, though that adds error and leakage.
Is an external pull-up resistor required on the RESET pin?
Yes - the RESET pin is open-drain and must be pulled up externally to the target logic rail (e.g., 3.3V or 5V). Diodes recommends a 10kΩ–100kΩ resistor; values outside this range may cause slow rise times or excessive current draw during reset assertion.
Does APX803L20-30SA-7 support AEC-Q100 qualification?
No - APX803L20-30SA-7 is not AEC-Q100 qualified. For automotive applications, Diodes offers the APX803L20-30SA-7Q variant (with Q suffix), which undergoes AEC-Q100 Grade 2 stress testing and is manufactured in IATF 16949-certified facilities.
APX803L20-30SA-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:
- 3V
- 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-23-3
APX803L20-30SA-7 FAQ
1.How can I place an order for APX803L20-30SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L20-30SA-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 APX803L20-30SA-7 reliable?
The price and inventory of APX803L20-30SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L20-30SA-7 is usually 5 days.
3.What payment methods are accepted for APX803L20-30SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L20-30SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L20-30SA-7?
APX803L20-30SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L20-30SA-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 APX803L20-30SA-7?
For technical support, including APX803L20-30SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L20-30SA-7 requirements.
6.How does Aetrix verify that APX803L20-30SA-7 is sourced from the original manufacturer or authorized distributors?
All APX803L20-30SA-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 APX803L20-30SA-7 meets industry standards.
7.What is the process for return or replacement of APX803L20-30SA-7?
All APX803L20-30SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L20-30SA-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 APX803L20-30SA-7 part is unused and in its original packaging.
Return procedure for APX803L20-30SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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