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Diodes Incorporated APX810S-29SA-7
- Part No.:
- APX810S-29SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S-29SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,235
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Product details
Overview
APX810S-29SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in digital systems. It provides active-high reset assertion when VCC drops below 2.93V (typ), maintains reset for ≥240ms after recovery, operates down to 1V supply, draws only 7µA typical supply current, and uses a push-pull output in SOT23-3 (SA) package-ideal for battery-powered controllers and portable instrumentation.
For engineers reviewing the APX810S-29SA-7 datasheet, APX810S-29SA-7 pinout, APX810S-29SA-7 application, or APX810S-29SA-7 equivalent, key selection criteria include reset threshold accuracy (±0.04V), guaranteed valid reset at VCC = 1V, 240ms timeout stability over −40°C to +125°C, and compatibility with 2.5V/3.0V/3.3V/5V supply rails in space-constrained embedded designs.
Technical Context
The APX810S-29SA-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.93V threshold. Its internal timing circuit ensures a minimum 240ms reset pulse width after VCC rises above threshold, independent of supply ramp rate.
Designed for immunity to fast transients, it guarantees correct logic state on RESET output across full operating temperature (−40°C to +125°C) and supply range (1.0V to 5.5V), with output drive capability of 1.2mA sink and 500µA source at VCC > VTH + 0.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (typ), ±0.04V tolerance - ensures reliable detection at 3.0V nominal supplies |
| Reset Timeout | 240ms (min) - guarantees sufficient processor initialization time after power-up |
| Supply Current | 7µA (typ) - enables multi-year operation on coin-cell batteries |
| Valid Reset Down To | VCC = 1.0V - maintains supervision during brownout and deep discharge |
| Output Type | Push-pull active-high - eliminates external pull-up resistor and reduces BOM count |
| Temp Range | −40°C to +125°C - supports industrial and automotive under-hood environments |
| Threshold Drift | 30ppm/°C - limits total drift to <15mV across full temperature range |
Pinout & Package
SOT23-3 (SA) package: 2.9mm × 1.3mm × 1.0mm body, gull-wing leads, RoHS-compliant "Green" molding compound (Br/Cl <900ppm, Sb <1000ppm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage |
| 2 | RESET | Active-high push-pull output - drives high to VCC when VCC ≥ 2.93V, low otherwise |
| 3 | VCC | Supply input - powers internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.93V threshold | Enables stable supervision of 3.0V and 3.3V systems without external trimming |
| 240ms guaranteed reset hold | Meets Intel-compatible power-on reset timing requirements for µP boot sequences |
| 1V minimum operating voltage | Permits supervision through deep brownout conditions where other detectors fail |
| 7µA supply current | Reduces quiescent load by >90% vs. legacy bipolar supervisors |
| No external components | Eliminates external RC timing network and pull-up resistor - saves PCB area and cost |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Supervising 3.3V microcontroller supply in DIN-rail mounted PLCs exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Voltage detector providing active-high reset signal to ARM Cortex-M core during cold start and line sag. Use Value: 240ms timeout ensures firmware initialization completes before peripheral enable; 125°C rating prevents false resets in cabinet-mounted enclosures. | Use Scenario: Monitoring coin-cell–powered sensor node with ultra-low duty-cycle wake-up cycles. IC Role / Device Role / Timing Role: Low-current supervisor asserting reset until stable 3.0V rail is established post-wakeup. Use Value: 7µA ICC extends 10-year battery life; 1V operation allows detection down to end-of-life cell voltage (~1.1V). |
| Medical Handheld Instruments | Automotive Body Control Modules |
Use Scenario: Ensuring safe boot of diagnostic handheld running off dual AA alkaline cells (1.8–3.2V range). IC Role / Device Role / Timing Role: Active-high reset generator tied to 3.0V LDO output, preventing corrupted memory writes during power ramp. Use Value: Push-pull output avoids weak pull-up leakage issues common in high-impedance medical sensor interfaces. | Use Scenario: Supervising 2.5V domain in BCM sub-system powered from switched 5V rail with transient noise. IC Role / Device Role / Timing Role: Immune voltage detector rejecting <20µs VCC glitches while asserting reset on sustained undervoltage. Use Value: 30ppm/°C drift maintains ±12mV threshold accuracy across −40°C to +105°C engine bay operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 2.93V threshold, 240ms timeout, but open-drain output requiring external pull-up | Lacks push-pull drive; adds component count and leakage path in high-impedance nodes | Choose if legacy board layout already includes pull-up or if level-shifting is required |
| TPS3808G18DBVR | 2.93V threshold, adjustable timeout (1.25ms–10s), 1.8µA ICC, but SOT23-6 package | Requires extra PCB area and routing for enable pin and capacitor-based timing | Choose when programmable delay or ultra-low ICC (<2µA) outweighs footprint and simplicity |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the APX810S-29SA-7 delivers identical threshold and timing performance in a smaller 3-pin SOT23 with integrated push-pull output-reducing BOM, layout complexity, and leakage sensitivity while maintaining industrial temperature support.
Availability
APX810S-29SA-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, medical handheld instruments, and automotive body control modules requiring stable component supply with full traceability and long-lifecycle assurance.
Supply support for APX810S-29SA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for cost-sensitive, space-constrained embedded systems requiring precise, low-power voltage monitoring without external components.
FAQ
What is the exact reset threshold voltage and its tolerance for APX810S-29SA-7?
The APX810S-29SA-7 has a nominal reset threshold of 2.93V at +25°C, with a guaranteed range of 2.89V to 2.97V across temperature and process variation. This 2.93V value is specified per DS39140 Rev. 2–2 Table 1, and the ±0.04V tolerance ensures robust operation with 3.0V and 3.3V supply rails under worst-case conditions.
Does APX810S-29SA-7 require an external pull-up resistor on the RESET pin?
No. The APX810S-29SA-7 features a push-pull output stage, enabling direct connection to µP reset inputs without external pull-up resistors. This is confirmed in the "Features" section and Pin Descriptions table of DS39140, which explicitly states "Push-Pull RESET Active High" and shows RESET as a fully driven terminal capable of sourcing 500µA and sinking 1.2mA.
Can APX810S-29SA-7 operate reliably at VCC = 1.2V?
Yes. The device guarantees valid reset assertion and logic-level output down to VCC = 1.0V, as stated in both Recommended Operating Conditions (VCC min = 1.0V) and Electrical Characteristics (RESET output specified at VCC > 1.0V, ISINK = 50µA). At 1.2V, it fully meets timing and voltage margin requirements for brownout detection.
Is the SOT23-3 (SA) package of APX810S-29SA-7 lead-free and halogen-free?
Yes. The SA package uses Diodes Incorporated's "Green" molding compound: fully RoHS 3 compliant (2015/863/EU), lead-free, antimony-free, and halogen-free (Br/Cl <900ppm each, total Br+Cl <1500ppm, Sb <1000ppm), as documented in Notes 1–3 of DS39140 and verified on Diodes' official Green Products page.
APX810S-29SA-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:
- 2.93V
- 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-29SA-7 FAQ
1.How can I place an order for APX810S-29SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S-29SA-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-29SA-7 reliable?
The price and inventory of APX810S-29SA-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-29SA-7 is usually 5 days.
3.What payment methods are accepted for APX810S-29SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S-29SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S-29SA-7?
APX810S-29SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S-29SA-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-29SA-7?
For technical support, including APX810S-29SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S-29SA-7 requirements.
6.How does Aetrix verify that APX810S-29SA-7 is sourced from the original manufacturer or authorized distributors?
All APX810S-29SA-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-29SA-7 meets industry standards.
7.What is the process for return or replacement of APX810S-29SA-7?
All APX810S-29SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S-29SA-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-29SA-7 part is unused and in its original packaging.
Return procedure for APX810S-29SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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