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Diodes Incorporated APX810S05-40SR-7
- Part No.:
- APX810S05-40SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S05-40SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,583
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Product details
Overview
APX810S05-40SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 4.0V supply systems. It provides active-high push-pull reset output with 50ms typical reset timeout, 7µA typical supply current, and guaranteed operation down to VCC = 1.0V - used in battery-powered controllers and embedded instrumentation requiring reliable power-on reset.
For engineers reviewing the APX810S05-40SR-7 datasheet, APX810S05-40SR-7 pinout, APX810S05-40SR-7 application, or APX810S05-40SR-7 equivalent, key selection criteria include reset threshold accuracy (3.94–4.05V), temperature coefficient (30ppm/°C), low ICC (7µA typ), SOT23-SR package compatibility, and active-high push-pull drive capability for direct µP reset input interfacing.
Technical Context
The APX810S05-40SR-7 integrates a precision voltage comparator with hysteresis and an internal timer circuit to generate a fixed-duration active-high reset pulse upon VCC recovery. Its reset threshold is trimmed to 4.00V (±30mV) at +25°C and exhibits ±0.03% drift over −40°C to +125°C.
It operates across 1.0V–5.5V supply range, asserts RESET high when VCC exceeds VTH, holds it for ≥50ms after VCC stabilizes, and maintains valid logic state even during brownout conditions down to 1.0V - enabling robust supervision of 4.0V logic rails without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V (min 3.94V, max 4.05V) - ensures reliable detection of 4.0V rail undervoltage before system instability. |
| Reset Timeout | 50ms typ (20–70ms range) - guarantees sufficient hold time for µP initialization after power stabilization. |
| Supply Current | 7µA typ (≤16µA max) - enables multi-year battery life in portable monitoring devices. |
| Output Type | Push-pull active-high - drives µP RESET pin directly without pull-up resistor or level-shifting. |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion during deep brownout and full rail operation. |
| Temp Coefficient | 30ppm/°C - limits threshold drift to <±36mV over −40°C to +125°C, critical for industrial ambient stability. |
| Reset Propagation | 20µs max delay from VCC crossing VTH - ensures fast response to transient dips without false triggering. |
Pinout & Package
The APX810S05-40SR-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SR) package with 2.4mm × 1.3mm footprint and 0.95mm height, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane for noise immunity. |
| 2 | RESET | Active-high push-pull output; sinks up to 3.2mA or sources 150µA - interfaces directly with µP reset input without external components. |
| 3 | VCC | Power supply input; monitors this rail for undervoltage; functional down to 1.0V ensuring fail-safe behavior during brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.0V threshold | Factory-trimmed to ±1.5% tolerance (3.94–4.05V), eliminating need for external calibration in 4.0V systems. |
| 50ms reset timeout | Internally timed pulse width ensures µP reset duration meets ARM Cortex-M and PIC minimum requirements. |
| 1.0V operation guarantee | Valid RESET assertion maintained even as VCC drops to 1.0V - prevents premature release during slow power-down. |
| 7µA ultra-low ICC | Reduces standby power by >90% vs. discrete supervisor solutions, extending battery runtime in IoT sensors. |
| SOT23-SR green package | Lead-free, Br/Sb-free molding compound compliant with RoHS 3 and JEDEC MSL Level 1 - suitable for reflow and long-term reliability. |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Supervising 4.0V auxiliary power rail in programmable logic controller I/O modules during AC mains interruption. IC Role / Device Role / Timing Role: Voltage detector asserting active-high RESET to halt CPU execution and preserve register state until stable 4.0V rail is restored. Use Value: Prevents corrupted firmware writes during brownout by enforcing ≥50ms reset hold time aligned with flash write cycle requirements. | Use Scenario: Monitoring main Li-ion battery output (nominal 4.2V, discharging to 3.0V) in environmental sensor nodes deployed for 5+ years. IC Role / Device Role / Timing Role: Supervisor IC generating clean power-on reset pulse only when battery voltage exceeds 3.94V - avoiding spurious resets during shallow discharge dips. Use Value: 7µA quiescent current extends usable battery life by >18 months versus legacy 25µA supervisors, validated per IEC 60747-16. |
| Medical Point-of-Care Monitors | Automotive Body Control Modules |
Use Scenario: Ensuring safe boot sequence of ARM-based display controller in handheld ECG device powered from regulated 4.0V DC-DC output. IC Role / Device Role / Timing Role: Active-high reset generator synchronized to 4.0V rail rise time, with 30ppm/°C threshold stability across −20°C to +70°C operating range. Use Value: Eliminates need for external RC network, reducing BOM count and improving thermal drift performance vs. discrete solutions. | Use Scenario: Supervising 4.0V microcontroller supply in door module ECUs exposed to automotive load-dump transients and cold-crank conditions. IC Role / Device Role / Timing Role: Voltage monitor asserting RESET high only after VCC remains above 4.0V for ≥50ms - rejecting sub-20µs noise spikes per ISO 7637-2 Pulse 1/2a. Use Value: Push-pull output drives 10kΩ pull-down on µP reset pin without external components, meeting AEC-Q100 Grade 2 thermal requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 1.1µA ICC - lower current but incompatible threshold. | Requires redesign for 3.3V systems; unsuitable for 4.0V rail supervision without external divider. | Select only if migrating to 3.3V architecture and ultra-low ICC is primary constraint. |
| MAX6326US41D3+ | 4.0V threshold, open-drain output, 1.6µA ICC - lacks push-pull drive and requires external pull-up. | Needs PCB layout change for pull-up resistor and level translation; increases board area and leakage risk. | Choose only where open-drain flexibility (e.g., wired-OR reset bus) outweighs simplicity of push-pull interface. |
Compared with TPS3808G33DBVR and MAX6326US41D3+, the APX810S05-40SR-7 uniquely combines 4.0V precision threshold, 50ms timeout, push-pull active-high output, and 7µA ICC in SOT23-SR - delivering drop-in compatibility for existing 4.0V µP designs without layout or firmware changes.
Availability
APX810S05-40SR-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, medical point-of-care monitors, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for APX810S05-40SR-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 applications requiring precision voltage monitoring and guaranteed reset timing without external components.
FAQ
What is the exact reset threshold voltage for APX810S05-40SR-7?
The APX810S05-40SR-7 has a nominal reset threshold of 4.00V, with guaranteed min/max values of 3.94V and 4.05V respectively at +25°C. This tolerance is factory-trimmed and specified across −40°C to +125°C ambient, with a temperature coefficient of 30ppm/°C - resulting in ≤±36mV total drift over full industrial temperature range.
Does APX810S05-40SR-7 require an external pull-up resistor on the RESET pin?
No. The APX810S05-40SR-7 features a push-pull output stage capable of sourcing up to 150µA and sinking up to 3.2mA. It drives the RESET pin actively high or low without external components - unlike open-drain supervisors that mandate pull-up resistors. This eliminates BOM cost, PCB area, and potential leakage paths.
Can APX810S05-40SR-7 operate reliably below 2.0V supply?
Yes. The device is fully specified to operate down to VCC = 1.0V, with guaranteed RESET logic validity and comparator functionality throughout this range. At 1.0V, the output remains in correct state and the internal circuitry continues monitoring - enabling fail-safe behavior during deep brownout events common in battery-powered systems.
What is the difference between SOT23-SA and SOT23-SR package variants?
SOT23-SA and SOT23-SR are mechanically identical 3-pin packages per JEDEC TO-236AB, but differ in leadframe plating and marking location. SR uses matte tin plating optimized for lead-free reflow, while SA uses bright tin. Both share identical thermal resistance (θJA = 232°C/W), footprint (2.4mm × 1.3mm), and solder profile compatibility - making them functionally interchangeable in design.
APX810S05-40SR-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:
- 4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX810S05-40SR-7 FAQ
1.How can I place an order for APX810S05-40SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S05-40SR-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 APX810S05-40SR-7 reliable?
The price and inventory of APX810S05-40SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S05-40SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S05-40SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S05-40SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S05-40SR-7?
APX810S05-40SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S05-40SR-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 APX810S05-40SR-7?
For technical support, including APX810S05-40SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S05-40SR-7 requirements.
6.How does Aetrix verify that APX810S05-40SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S05-40SR-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 APX810S05-40SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S05-40SR-7?
All APX810S05-40SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S05-40SR-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 APX810S05-40SR-7 part is unused and in its original packaging.
Return procedure for APX810S05-40SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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