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Diodes Incorporated APX810S05-23SR-7
- Part No.:
- APX810S05-23SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S05-23SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
APX810S05-23SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 3.3V digital systems. It provides active-high push-pull RESET output with 2.25V threshold, 50ms typical reset timeout, 7µA supply current, and guaranteed operation down to VCC = 1.0V - enabling reliable power-on reset in battery-powered controllers and portable instrumentation.
For engineers reviewing the APX810S05-23SR-7 datasheet, APX810S05-23SR-7 pinout, APX810S05-23SR-7 application, or APX810S05-23SR-7 equivalent, key selection criteria include reset threshold accuracy (±0.03V), temperature coefficient (30ppm/°C), low-VCC validity (1.0V), SOT23-SR package footprint, and compatibility with 3.3V logic interfaces in embedded microcontroller systems.
Technical Context
The APX810S05-23SR-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.25V threshold. Its internal timing circuit generates a minimum 50ms active-high RESET pulse after VCC rises above threshold, with delay stability maintained across −40°C to +125°C ambient.
Designed for direct connection to µP reset inputs, it features push-pull output capable of sourcing ≥500µA at 0.8×VCC and sinking ≤3.2mA at ≤0.4V - eliminating need for external pull-up resistors while ensuring clean logic-level signaling into CMOS reset pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±0.03V - precisely matches 3.3V system brown-out detection at 68% VCC. |
| Reset Timeout | 50ms typ. - ensures sufficient hold time for µP initialization before release. |
| Supply Current | 7µA typ. - enables multi-year battery life in always-on monitoring applications. |
| VCC Validity Range | 1.0V to 5.5V - supports reset assertion during deep brown-out and full supply recovery. |
| Output Type | Active-high push-pull - drives µP reset pin directly without external components. |
| Temp Coefficient | 30ppm/°C - maintains threshold drift <±15mV over −40°C to +125°C. |
| ESD Rating | 6kV HBM - robust enough for handling in automated assembly and field-replaceable modules. |
Pinout & Package
APX810S05-23SR-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SR) package with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for high-density PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path for internal comparator and output stage. |
| 2 | RESET | Active-high push-pull output - asserts logic HIGH during reset, LOW otherwise. |
| 3 | VCC | Power supply input - powers internal circuitry and defines monitored rail. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | Enables accurate 3.3V system supervision without calibration or trimming. |
| 50ms reset timeout | Guarantees µP core and peripherals fully stabilize before release. |
| 7µA quiescent current | Reduces standby power in battery-backed real-time clocks and sensors. |
| 1.0V VCC operation limit | Ensures deterministic reset behavior even during severe brown-out events. |
| SOT23-SR package | Standardized 3-pin footprint compatible with automated pick-and-place and reflow. |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
|
Use Scenario: PLC I/O modules powered by 3.3V LDOs in factory automation cabinets. IC Role / Device Role / Timing Role: Monitors 3.3V rail and asserts active-high RESET to ARM Cortex-M4 MCU on undervoltage. Use Value: Prevents firmware corruption during line transients by holding reset until stable 3.3V is confirmed for ≥50ms. |
Use Scenario: Handheld glucose meters using coin-cell batteries and low-power µC. IC Role / Device Role / Timing Role: Detects battery sag below 2.25V and triggers controlled shutdown via µC reset input. Use Value: Extends usable battery life by avoiding premature shutdown while guaranteeing safe reset at 1.0V VCC. |
| Smart Energy Meters | Wireless Sensor Nodes |
|
Use Scenario: DIN-rail mounted electricity meters with isolated 3.3V auxiliary supply. IC Role / Device Role / Timing Role: Supervises isolated 3.3V rail feeding metrology SoC and RF transceiver. Use Value: Eliminates external RC network, reducing BOM count and improving long-term threshold stability. |
Use Scenario: LoRaWAN soil moisture sensor nodes powered by Li-SOCl₂ primary cells. IC Role / Device Role / Timing Role: Provides cold-start reset assurance when cell voltage recovers from load-induced dip. Use Value: Ensures consistent boot sequence across −25°C to +70°C operating range with <30ppm/°C drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3123QDBVRQ1 | 2.32V threshold, 200ms timeout, automotive-grade AEC-Q100 qualified | Requires longer reset hold time; suited for automotive infotainment, not portable consumer | Select when AEC-Q100 compliance and extended timeout are mandatory |
| MAX6326US23+T | 2.32V threshold, open-drain output, 140ms min timeout, higher 12µA ICC | Needs external pull-up; less suitable for space-constrained battery designs | Choose only if open-drain interface or higher noise immunity is required |
Compared with TPS3123QDBVRQ1 and MAX6326US23+T, APX810S05-23SR-7 offers tighter threshold tolerance (±0.03V vs ±0.05V), lower ICC (7µA vs 12–25µA), and push-pull drive - making it optimal for compact, ultra-low-power 3.3V µP supervision where board area and battery life are critical.
Availability
APX810S05-23SR-7 is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, smart energy meters, and wireless sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for APX810S05-23SR-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, low-power solutions for industrial, computing, and consumer markets.
This device belongs to Diodes' APX8xxS voltage supervisor product line - engineered specifically for cost-sensitive, space-constrained µP reset applications demanding precision threshold, minimal quiescent current, and guaranteed operation down to 1.0V.
FAQ
What is the exact reset threshold voltage and its tolerance for APX810S05-23SR-7?
The APX810S05-23SR-7 has a nominal reset threshold of 2.25V, with a guaranteed range of 2.22V to 2.29V at +25°C. This ±0.03V tolerance ensures precise detection of 3.3V rail collapse at 68% of nominal voltage, critical for preventing erratic µP behavior during brown-out conditions.
Does APX810S05-23SR-7 require an external pull-up resistor on the RESET pin?
No. The APX810S05-23SR-7 features a push-pull output stage that actively drives HIGH during reset and LOW otherwise. This eliminates the need for an external pull-up resistor, reducing BOM count, PCB area, and potential leakage paths in battery-powered systems.
Can APX810S05-23SR-7 operate reliably at VCC = 1.2V?
Yes. The device guarantees correct RESET logic state down to VCC = 1.0V, including full functionality of the internal comparator and output driver. At 1.2V, it will assert RESET if VCC falls below 2.25V - though the condition cannot occur; the key point is valid output behavior during recovery from deep undervoltage.
How does the 50ms reset timeout behave across temperature?
The 50ms typical timeout is specified at +25°C; over −40°C to +125°C, the actual timeout remains within 20ms to 70ms per datasheet limits. This variation is intentional and ensures sufficient hold time under all operating conditions while avoiding excessive delays in fast-recovery systems.
APX810S05-23SR-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:
- 2.25V
- 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
APX810S05-23SR-7 FAQ
1.How can I place an order for APX810S05-23SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S05-23SR-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 APX810S05-23SR-7 reliable?
The price and inventory of APX810S05-23SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S05-23SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S05-23SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S05-23SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S05-23SR-7?
APX810S05-23SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S05-23SR-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 APX810S05-23SR-7?
For technical support, including APX810S05-23SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S05-23SR-7 requirements.
6.How does Aetrix verify that APX810S05-23SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S05-23SR-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 APX810S05-23SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S05-23SR-7?
All APX810S05-23SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S05-23SR-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 APX810S05-23SR-7 part is unused and in its original packaging.
Return procedure for APX810S05-23SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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