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Diodes Incorporated APX810S-46SR-7
- Part No.:
- APX810S-46SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S-46SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
APX810S-46SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 4.63V supply monitoring applications. It provides active-high push-pull RESET output, 240ms minimum reset timeout, 7µA typical supply current, and guaranteed operation down to VCC = 1V. It is used in portable battery-powered equipment to ensure reliable power-on reset and brownout protection.
For engineers reviewing the APX810S-46SR-7 datasheet, APX810S-46SR-7 pinout, APX810S-46SR-7 application, or APX810S-46SR-7 equivalent, key selection criteria include reset threshold accuracy (4.57–4.69V), temperature coefficient (30ppm/°C), output drive capability (500µA source), and SOT23-SR package compatibility with space-constrained PCB layouts.
Technical Context
The APX810S-46SR-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 4.63V threshold. Its internal timing circuit ensures a minimum 240ms RESET assertion after VCC recovers above threshold, eliminating need for external RC timing components.
Designed for low-power systems, it features a push-pull output stage that drives high without external pull-up, supports logic-level interfacing with µPs operating at 1.8–5.5V, and maintains valid output state across full VCC range (1.0–5.5V) and temperature (-40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (typ), 4.57–4.69V (min/max) - sets precise 4.6V supply monitoring point |
| Reset Timeout | 240ms (typ), 140–280ms (min/max) - ensures sufficient hold time for µP initialization |
| Supply Current | 7µA (typ), ≤16µA (max) - enables multi-year battery life in portable devices |
| Output Type | Push-pull active-high - eliminates external pull-up resistor and reduces BOM count |
| VCC Operating Range | 1.0–5.5V - guarantees RESET validity even during deep brownout or startup |
| Temp Coefficient | 30ppm/°C - maintains <±1.5% threshold drift over -40°C to +125°C |
| Output Drive | VOH ≥ 0.8VCC @ 500µA - ensures clean logic-high interface with modern µP reset inputs |
Pinout & Package
SOT23-SR (3-pin) surface-mount package with 1.3mm × 2.9mm footprint, 0.95mm height, and gull-wing leads; RoHS-compliant, halogen-free "Green" molding compound.
| 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 when VCC ≥ 4.63V, low otherwise |
| 3 | VCC | Power supply input - powers internal circuitry and defines monitored rail |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V threshold | Enables accurate supervision of 4.6V nominal rails (e.g., Li-ion charge termination, industrial 4.8V supplies) |
| 240ms factory-trimmed timeout | Eliminates external timing capacitor and associated tolerance stack-up in reset sequencing |
| 7µA supply current | Reduces quiescent load on coin-cell or energy-harvesting sources by >90% vs. legacy supervisors |
| Valid operation down to 1V VCC | Ensures deterministic reset behavior during ultra-low-voltage brownout recovery |
| SOT23-SR package | Supports automated placement and reflow in high-density consumer electronics PCBs |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless sensor node powered by a single CR2032 coin cell must retain configuration and initiate clean boot after battery replacement or voltage sag. IC Role / Device Role / Timing Role: Voltage detector providing active-high reset signal to ARM Cortex-M0+ MCU upon VCC crossing 4.63V threshold. Use Value: 7µA supply current extends battery life beyond 5 years; 240ms timeout ensures full MCU register initialization before firmware execution. | Use Scenario: An isolated digital input module monitors 4.8V field power and must assert reset if supply drops below 4.6V due to cable voltage drop or transient noise. IC Role / Device Role / Timing Role: Supervisory IC generating robust reset pulse synchronized to 4.63V threshold with immunity to fast VCC transients. Use Value: 30ppm/°C tempco maintains threshold accuracy across -40°C to +85°C industrial ambient; push-pull output drives optocoupler input directly. |
| Medical Wearable Charger Circuit | Automotive Body Control Module (BCM) Subsystem |
Use Scenario: A wearable ECG patch uses a Li-ion battery charged to 4.2V but includes a 4.6V overvoltage clamp; supervisor must detect clamp activation and reset analog front-end. IC Role / Device Role / Timing Role: Precision voltage monitor asserting RESET when clamp engages and VCC rises to 4.63V. Use Value: Tight 4.57–4.69V threshold window avoids false triggers near 4.2V nominal; 1V minimum VCC operation allows detection during fast discharge events. | Use Scenario: A BCM sub-board derives 5V from vehicle battery and requires fail-safe reset if supply exceeds 4.6V due to alternator regulation fault. IC Role / Device Role / Timing Role: Overvoltage supervisor triggering system-wide reset via active-high signal to main microcontroller. Use Value: Push-pull output interfaces directly with 5V-tolerant MCU reset pin; SOT23-SR package fits tight layout constraints near power entry point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EC46DBZR | 4.6V threshold, 200ms timeout, open-drain output, 1.8–6V VCC range | Requires external pull-up; less suitable for low-noise µP reset inputs | Select when open-drain flexibility or wider VCC range outweighs need for push-pull simplicity |
| MAX6326US46D3+ | 4.63V threshold, 240ms timeout, push-pull active-high, 1.0–5.5V VCC | Higher 12µA supply current; larger SOT23-6 package | Select when higher output drive (20mA) or enhanced ESD rating (8kV HBM) are required |
Compared with TLV803EC46DBZR and MAX6326US46D3+, the APX810S-46SR-7 offers lowest quiescent current (7µA), smallest footprint (SOT23-SR), and identical 4.63V/240ms specification-making it optimal for space- and power-constrained µP supervision where push-pull output simplifies design.
Availability
APX810S-46SR-7 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC modules, medical wearables, and automotive body control subsystems requiring stable component supply and long-term lifecycle support.
Supply support for APX810S-46SR-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 ICs for power management, signal integrity, and connectivity applications.
The APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for low-cost, low-power voltage monitoring in portable and embedded systems where precision, small size, and minimal external components are critical.
FAQ
What is the exact reset threshold voltage for APX810S-46SR-7?
The APX810S-46SR-7 has a nominal reset threshold of 4.63V, with guaranteed min/max values of 4.57V and 4.69V respectively at +25°C. This tolerance remains within ±1.5% over the full operating temperature range (-40°C to +125°C) due to its 30ppm/°C temperature coefficient.
Does APX810S-46SR-7 require an external pull-up resistor on the RESET pin?
No. The APX810S-46SR-7 features a push-pull output stage, so the RESET pin actively drives high (≥0.8VCC) when VCC is above threshold and low (≤0.4V) when below threshold-no external pull-up is needed, reducing BOM count and board area.
Can APX810S-46SR-7 operate reliably at VCC = 1.2V?
Yes. The device is fully specified down to VCC = 1.0V: RESET output remains logically valid (high when VCC ≥ 4.63V, low otherwise), and internal comparator functionality is guaranteed. At 1.2V, it will assert RESET low and maintain correct state until VCC rises above threshold.
What is the difference between SOT23-SR and SOT23-SA package variants?
SOT23-SR and SOT23-SA are mechanically identical 3-pin packages but differ in pin numbering orientation: SR uses standard JEDEC top-view pin 1–2–3 left-to-right, while SA uses alternate pinout (1–3–2). APX810S-46SR-7 follows the SR mapping: Pin 1 = GND, Pin 2 = RESET, Pin 3 = VCC.
APX810S-46SR-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:
- 4.63V
- 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-46SR-7 FAQ
1.How can I place an order for APX810S-46SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S-46SR-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-46SR-7 reliable?
The price and inventory of APX810S-46SR-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-46SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S-46SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S-46SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S-46SR-7?
APX810S-46SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S-46SR-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-46SR-7?
For technical support, including APX810S-46SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S-46SR-7 requirements.
6.How does Aetrix verify that APX810S-46SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S-46SR-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-46SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S-46SR-7?
All APX810S-46SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S-46SR-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-46SR-7 part is unused and in its original packaging.
Return procedure for APX810S-46SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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