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Diodes Incorporated APX810S-26SR-7
- Part No.:
- APX810S-26SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S-26SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,306
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Product details
Overview
APX810S-26SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in embedded digital systems. It monitors +2.63V supply rails with ±0.04V threshold accuracy, asserts an active-high push-pull RESET signal for ≥240ms after VCC recovery, and operates down to 1.0V supply-enabling reliable power-on reset in battery-powered controllers and portable instrumentation.
For engineers reviewing the APX810S-26SR-7 datasheet, APX810S-26SR-7 pinout, APX810S-26SR-7 application, or APX810S-26SR-7 equivalent, key selection criteria include reset threshold tolerance (±0.04V), guaranteed operation at VCC = 1.0V, 7µA typical supply current, and SOT23-SR package compatibility with space-constrained PCB layouts.
Technical Context
The APX810S-26SR-7 integrates a precision bandgap reference and comparator to detect VCC drops below 2.63V (typical), with 30ppm/°C temperature coefficient ensuring stable threshold across –40°C to +125°C. Its internal timing circuit guarantees minimum 240ms reset assertion after VCC exceeds threshold, independent of external components.
It features a push-pull output stage capable of sourcing 500µA at 0.8×VCC and sinking 1.2mA at ≤0.3V, eliminating need for external pull-up resistors. The device ignores fast transients on VCC and maintains valid logic states down to 1.0V supply-critical for brown-out detection in low-voltage microcontroller systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (typ), ±0.04V tolerance - ensures precise detection of +2.6V rail collapse without false triggers |
| Supply Current | 7µA (typ) - enables multi-year battery life in always-on monitoring applications |
| Reset Pulse Width | 240ms (min) - satisfies µP reset timing requirements per Intel/ARM specifications |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion during deep brown-out conditions |
| Output Type | Active-high push-pull - eliminates external pull-up resistor and reduces BOM count |
| Temp Coefficient | 30ppm/°C - maintains <±1.5% threshold drift over full industrial temperature range |
| VOH/VOL | 0.8VCC (min) / 0.3V (max) - ensures clean logic-level compatibility with 1.8V–5V µP inputs |
Pinout & Package
SOT23-SR (3-pin) surface-mount package with 2.4mm × 1.3mm footprint, 0.95mm height, and gull-wing leads-optimized for automated placement and reflow soldering in high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be connected to system ground plane |
| 2 | RESET | Active-high push-pull reset output; drives µP RESET pin directly without external components |
| 3 | VCC | Power supply input; monitors this rail for undervoltage events; functional down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Precision threshold calibration | 2.63V ±0.04V at 25°C - eliminates need for factory trimming or external adjustment |
| Low-power operation | 7µA typical ICC - reduces standby power in battery-backed systems by >90% vs. discrete solutions |
| Transient-immune sensing | 20µs minimum VCC drop detection time - rejects noise spikes while capturing true brown-out events |
| Full-temperature specification | Valid operation from –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Green packaging | Halogen-free, antimony-free, RoHS-compliant SOT23-SR - meets IPC-JEDEC J-STD-609 Class 1 requirements |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and pulse oximeters requiring reliable power-on initialization and brown-out recovery. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to ARM Cortex-M0+ MCU during cold start and low-battery conditions. Use Value: 7µA quiescent current extends single-CR2032 battery life beyond 3 years; 240ms reset pulse ensures complete firmware initialization before peripheral access. |
Use Scenario: DIN-rail mounted programmable logic controller modules operating in harsh factory environments with fluctuating 24VDC supplies. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output feeding FPGA configuration memory and I/O drivers. Use Value: 30ppm/°C threshold stability prevents spurious resets during ambient temperature swings from 0°C to 70°C. |
| Smart Energy Meters | Automotive Body Control Units |
|
Use Scenario: ANSI C12.20-certified electricity meters with dual-supply architecture (main AC/backup Li-ion). IC Role / Device Role / Timing Role: Supervises 2.6V backup rail to guarantee secure meter state retention during main power loss. Use Value: Guaranteed reset validity down to VCC = 1.0V enables detection of gradual battery depletion before data corruption occurs. |
Use Scenario: CAN-connected door module controlling window lift, mirror fold, and interior lighting. IC Role / Device Role / Timing Role: Resets Infineon AURIX TC212L microcontroller when 5V supply dips below 2.63V during load dump transients. Use Value: Push-pull output drives µP RESET pin directly-no external pull-up needed-reducing component count and board area in tight ECU housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T | 2.63V threshold, 140ms min reset pulse, open-drain output requiring external pull-up | Lacks push-pull drive; adds 1 resistor and increases layout complexity | Select when legacy MAXIM footprint compatibility is required and board space allows pull-up resistor |
| TPS3808G12QDBVRQ1 | 2.63V threshold, 200ms min pulse, 1.6µA supply current, automotive-grade (-40°C to +125°C) | Lower ICC but higher cost; requires external capacitor for adjustable delay | Select for automotive ASIL-B systems where ultra-low power outweighs BOM simplicity |
Compared with MAX809TRD2T and TPS3808G12QDBVRQ1, the APX810S-26SR-7 delivers optimal balance: push-pull output eliminates external components, 240ms fixed delay meets most µP requirements without tuning, and 7µA ICC provides sufficient low-power performance at lower cost than automotive-qualified alternatives.
Availability
APX810S-26SR-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart energy meters requiring stable component supply with consistent SOT23-SR packaging and tape-and-reel delivery.
Supply support for APX810S-26SR-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for cost-sensitive, space-constrained embedded systems needing precision voltage monitoring without external passive components.
FAQ
What is the exact reset threshold voltage for APX810S-26SR-7?
The APX810S-26SR-7 has a nominal reset threshold of 2.63V at +25°C, with guaranteed limits of 2.59V (min) and 2.67V (max) across temperature and process variation. This value is laser-trimmed during production and specified in the DS39140 datasheet Table 1 under "VTH APX809SXX/810SXX-26".
Does APX810S-26SR-7 require an external capacitor for reset timing?
No. The APX810S-26SR-7 integrates a factory-trimmed timing circuit that guarantees ≥240ms reset assertion after VCC rises above threshold. No external capacitor or resistor is needed-unlike adjustable supervisors such as the TPS3808 series-reducing BOM count and layout area.
Can APX810S-26SR-7 operate with a 1.8V supply rail?
No. The APX810S-26SR-7 is designed to monitor supply rails ≥2.5V (e.g., 2.63V threshold). While it remains functional down to VCC = 1.0V, its reset function only activates when VCC falls below 2.63V. For 1.8V systems, use APX810S-18 variants with 1.78V threshold.
What is the difference between SOT23-SA and SOT23-SR packages for this part?
SOT23-SA and SOT23-SR are mechanically identical 3-pin packages but differ in leadframe plating and marking. SR denotes standard RoHS-compliant matte tin plating; SA uses alternative plating for specific assembly processes. Both share identical thermal, electrical, and mechanical specs per Diodes' package outline documentation.
APX810S-26SR-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:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX810S-26SR-7 FAQ
1.How can I place an order for APX810S-26SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S-26SR-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 APX810S-26SR-7 reliable?
The price and inventory of APX810S-26SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S-26SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S-26SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S-26SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S-26SR-7?
APX810S-26SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S-26SR-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 APX810S-26SR-7?
For technical support, including APX810S-26SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S-26SR-7 requirements.
6.How does Aetrix verify that APX810S-26SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S-26SR-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 APX810S-26SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S-26SR-7?
All APX810S-26SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S-26SR-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 APX810S-26SR-7 part is unused and in its original packaging.
Return procedure for APX810S-26SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APX810S-26SR-7 Tags
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