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Diodes Incorporated APX810S05-44SR-7
- Part No.:
- APX810S05-44SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S05-44SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,294
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Product details
Overview
APX810S05-44SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for supervisory reset monitoring in microprocessor and digital systems. It provides active-high push-pull RESET output with 4.38 V (typ) threshold, 50 ms (typ) reset timeout, 7 µA supply current, and guaranteed operation down to VCC = 1.0 V - used in portable equipment, controllers, and critical µP power monitoring.
For engineers reviewing the APX810S05-44SR-7 datasheet, APX810S05-44SR-7 pinout, APX810S05-44SR-7 application, or APX810S05-44SR-7 equivalent, key selection criteria include reset threshold accuracy, temperature stability (±30 ppm/°C), low ICC, push-pull drive capability, and SOT23-SR package compatibility with space-constrained PCB layouts.
Technical Context
The APX810S05-44SR-7 integrates a precision bandgap reference, comparator, and push-pull output stage in a single die. Its reset assertion logic triggers when VCC falls below 4.32–4.44 V (min–max at +25°C), with hysteresis inherent to comparator design and thermal drift limited to ±30 ppm/°C over –40°C to +125°C.
It delivers a fixed 50 ms (typ) reset pulse width after VCC recovers above threshold, independent of external timing components. The output remains valid down to VCC = 1.0 V, enabling reliable supervision during brown-out and battery-depletion conditions in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38 V (typ); ensures stable reset activation for +5 V rail monitoring with ±60 mV tolerance at +25°C |
| Reset Timeout | 50 ms (typ); guarantees minimum system reset hold time after VCC recovery, eliminating need for RC timing network |
| Supply Current | 7 µA (typ); enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| Output Type | Push-pull active-high RESET; drives logic inputs directly without pull-up resistor, reducing BOM count and board area |
| VCC Operating Range | 1.0 V to 5.5 V; supports supervision during deep brown-out and full rail operation across industrial and portable designs |
| Temp Coefficient | ±30 ppm/°C; maintains threshold stability over –40°C to +125°C, critical for automotive under-hood and industrial control environments |
| Reset Propagation Delay | 20 µs (max); responds rapidly to supply dips, preventing spurious processor execution during transient faults |
Pinout & Package
APX810S05-44SR-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SR) package with 1.3 mm × 2.9 mm footprint and 0.95 mm height - optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Return path for internal circuitry and output stage; must be connected to system ground plane for noise immunity and accurate threshold referencing |
| 2 (RESET) | Active-High Push-Pull Output | Drives µP RESET input directly; sinks up to 3.2 mA or sources 150 µA while maintaining VOH ≥ 0.8×VCC and VOL ≤ 0.4 V |
| 3 (VCC) | Supply Input | Powers internal comparator and output stage; accepts 1.0–5.5 V; internally decoupled to reject fast transients on power rail |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.38 V threshold | Factory-trimmed bandgap reference ensures ±1.5% initial accuracy at +25°C, eliminating manual calibration in production |
| No external components required | Integrated timing and detection circuitry removes need for RC networks, saving 2–3 mm² PCB area and reducing bill-of-materials cost |
| Guaranteed operation to 1.0 V | Enables robust reset assertion during battery discharge or cold-start conditions where VCC drops below 2.0 V |
| Low 7 µA quiescent current | Reduces standby power draw by >90% versus discrete supervisor solutions, extending shelf life of battery-backed systems |
| SOT23-SR "Green" package | Lead-free, halogen-free (Br & Cl < 900 ppm, Sb < 1000 ppm), compliant with RoHS 3 and JEDEC MSL Level 1 |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
|
Use Scenario: Supervises 5 V main rail in programmable logic controller during factory floor voltage sags and EMI events. IC Role / Device Role / Timing Role: Voltage detector providing active-high reset signal to ARM Cortex-M7 MCU upon undervoltage condition. Use Value: Prevents firmware corruption during 10–100 ms line dips by asserting reset for ≥50 ms after recovery, meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Monitors lithium coin-cell–supplied 3.3 V rail in handheld ECG device during battery depletion. IC Role / Device Role / Timing Role: Supervisor IC ensuring safe shutdown before ADC or Bluetooth SoC malfunction due to low VCC. Use Value: Operates down to VCC = 1.0 V and draws only 7 µA, enabling >3 years shelf life and reliable low-battery warning before cutoff. |
| Automotive Body Control Module | Smart Home Sensor Hub |
|
Use Scenario: Detects 5 V supply integrity in BCM after ignition cycle, especially during cold cranking (<6 V battery). IC Role / Device Role / Timing Role: Reset generator interfacing with Infineon AURIX TC3xx via push-pull output, eliminating external pull-up. Use Value: ±30 ppm/°C tempco and –40°C to +125°C operation ensure consistent 4.38 V trip point across engine bay thermal cycling. |
Use Scenario: Ensures clean boot of ESP32-based hub after USB power interruption or surge-induced dropout. IC Role / Device Role / Timing Role: Single-chip supervisor replacing discrete reset circuit with Zener + transistor + capacitor. Use Value: Reduces component count by 4 parts and layout area by 35%, while improving reset timing repeatability to ±10% vs. ±30% for RC solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T1G | 4.63 V threshold, 240 ms reset timeout, open-drain output requiring external pull-up | Better suited for legacy 5 V systems needing longer reset hold; incompatible with direct-drive µP inputs | Select if longer timeout and open-drain flexibility are required; verify pull-up resistor sizing and logic level compatibility |
| TPS3808G33DBVR | 3.3 V threshold, adjustable timeout (1–1000 ms), higher ICC (12 µA typ), SOT23-6 package | Designed for lower-voltage rails and programmable timing; occupies larger footprint and increases standby power | Choose only when 3.3 V supervision and timeout configurability outweigh cost, size, and current penalties |
Compared with MAX809TRD2T1G and TPS3808G33DBVR, APX810S05-44SR-7 offers optimal trade-off for +5 V systems: precise 4.38 V trip, fixed 50 ms timeout, push-pull drive, ultra-low 7 µA ICC, and minimal SOT23-3 footprint - delivering highest integration density and lowest power among alternatives.
Availability
APX810S05-44SR-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart home sensor hubs requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for APX810S05-44SR-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, energy-efficient components for industrial, computing, and consumer markets.
The APX809S/810S series targets cost-sensitive, space-constrained µP supervision applications - delivering precision voltage detection, zero-external-component operation, and extended temperature performance in ultra-small packages.
FAQ
What is the exact reset threshold voltage for APX810S05-44SR-7?
The APX810S05-44SR-7 has a nominal reset threshold of 4.38 V at +25°C, with guaranteed min/max values of 4.32 V and 4.44 V respectively. This threshold is factory-trimmed using a precision bandgap reference and exhibits ±30 ppm/°C drift over –40°C to +125°C.
Does APX810S05-44SR-7 require an external pull-up resistor?
No. APX810S05-44SR-7 features a push-pull output stage that actively drives HIGH and LOW states. It can directly interface with standard CMOS inputs without any external pull-up or pull-down resistors, simplifying design and reducing component count.
Can APX810S05-44SR-7 operate reliably below 2.0 V VCC?
Yes. The device guarantees correct RESET logic state and functional operation down to VCC = 1.0 V, making it suitable for battery-powered applications experiencing deep brown-out or end-of-life voltage sag - unlike many supervisors that fail below 2.5 V.
What is the maximum sink/source current capability of the RESET pin?
The RESET pin can sink up to 3.2 mA while maintaining VOL ≤ 0.4 V (at VCC = VTH + 0.2 V), and source 150 µA while sustaining VOH ≥ 0.8×VCC (at 1.8 V < VCC < VTH − 0.2 V). These values are fully specified across temperature and supply range.
APX810S05-44SR-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:
- 4.38V
- 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
APX810S05-44SR-7 FAQ
1.How can I place an order for APX810S05-44SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S05-44SR-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 APX810S05-44SR-7 reliable?
The price and inventory of APX810S05-44SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S05-44SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S05-44SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S05-44SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S05-44SR-7?
APX810S05-44SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S05-44SR-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 APX810S05-44SR-7?
For technical support, including APX810S05-44SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S05-44SR-7 requirements.
6.How does Aetrix verify that APX810S05-44SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S05-44SR-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 APX810S05-44SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S05-44SR-7?
All APX810S05-44SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S05-44SR-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 APX810S05-44SR-7 part is unused and in its original packaging.
Return procedure for APX810S05-44SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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