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Diodes Incorporated APX810-44SRG-7
- Part No.:
- APX810-44SRG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810-44SRG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23R
- Quantity:
- Payment:
- Shipping:
Inventory:5,880
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Product details
Overview
APX810-44SRG-7 from Diodes Incorporated is a 3-pin SOT23 microprocessor supervisory circuit with active-high push-pull RESET output, 4.38 V reset threshold (±0.09 V), 200 ms typical reset timeout, and guaranteed operation down to VCC = 1 V. It monitors 5 V power rails in embedded controllers and portable systems to prevent erroneous code execution during power-up, brownout, or shutdown.
For engineers reviewing the APX810-44SRG-7 datasheet, APX810-44SRG-7 pinout, APX810-44SRG-7 application, or APX810-44SRG-7 equivalent, key selection criteria include reset threshold accuracy (±0.09 V at +25°C), low 30 µA supply current, push-pull drive capability (1.2 mA sink), and guaranteed reset validity over -40°C to +85°C ambient.
Technical Context
The APX810-44SRG-7 integrates a precision voltage comparator, internal delay timer, and push-pull output driver. Its reset threshold is trimmed to 4.38 V with ±0.09 V tolerance over temperature and exhibits ≤30 ppm/°C tempco.
It asserts RESET high when VCC rises above 4.38 V and holds it for ≥240 ms after VCC exceeds threshold; any subsequent VCC dip below threshold resets the timer. The output remains valid down to VCC = 1 V, and fast transients on VCC are rejected by internal filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38 V (typical), ±0.09 V tolerance ensures reliable detection of 5 V rail undervoltage before system instability |
| Reset Timeout | 200 ms (typical), ≥240 ms minimum guarantees sufficient processor initialization time after power recovery |
| Supply Current | 30 µA (typical), enables use in battery-powered equipment with minimal standby drain |
| Operating Voltage Range | 1.1 V to 5.5 V, supports valid reset assertion even during deep brownout down to 1 V VCC |
| Output Type | Push-pull active-high, delivers 1.2 mA sink current without external pull-up, reducing BOM count |
| Temperature Range | -40°C to +85°C, fully specified for industrial-grade embedded applications |
| ESD Protection | 5 kV HBM, protects against handling damage in manufacturing and field service environments |
Pinout & Package
SOT23-3 (SR package) with 2.4 mm × 1.3 mm footprint, 0.95 mm height, and standard JEDEC MO-178 leadframe. RoHS-compliant, halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Supply Input | Power rail input; device monitors this node for undervoltage; operates from 1.1 V to 5.5 V |
| 2 (GND) | Ground Reference | Return path for internal comparator and output driver; must be low-impedance for accurate threshold sensing |
| 3 (RESET) | Active-High Reset Output | Push-pull output asserted high during reset; sinks 1.2 mA when low, sources no current when high |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.38 V threshold | ±0.09 V tolerance over full temperature range ensures deterministic reset timing across operating conditions |
| 200 ms reset timeout | Guaranteed ≥240 ms minimum hold time prevents premature release of microprocessor reset signal |
| 30 µA supply current | Enables >10-year battery life in coin-cell–powered IoT sensors and portable instrumentation |
| Push-pull active-high output | Eliminates need for external pull-up resistor, reducing PCB area and component cost |
| Valid reset down to VCC = 1 V | Ensures controlled shutdown sequence even during severe brownout events |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
Use Scenario: PLC I/O modules powered from 5 V DC-DC converters subject to load transients and line sags. IC Role / Device Role / Timing Role: Supervises 5 V rail and asserts active-high RESET to ARM Cortex-M4 microcontroller until stable power is confirmed. Use Value: Prevents firmware corruption during factory floor voltage fluctuations with <240 ms guaranteed reset hold time. |
Use Scenario: Handheld glucose meters using CR2032 coin cell with declining voltage over battery life. IC Role / Device Role / Timing Role: Monitors regulated 5 V output of boost converter and triggers system reset before ADC reference drifts. Use Value: Maintains diagnostic accuracy by enforcing clean restart before supply drops below 4.31 V (min threshold). |
| Network Edge Routers | Smart Energy Meters |
Use Scenario: Dual-rail 5 V/3.3 V power system where 5 V supplies FPGA configuration memory and PHY interface. IC Role / Device Role / Timing Role: Resets FPGA upon 5 V brownout while allowing 3.3 V subsystem to remain operational. Use Value: Enables partial system recovery without full reconfiguration, reducing boot latency by 300 ms. |
Use Scenario: ANSI C12.22–compliant meter with isolated RS-485 interface requiring deterministic power-on sequencing. IC Role / Device Role / Timing Role: Generates synchronized reset pulse to MCU and isolated transceiver after 5 V rail stabilizes. Use Value: Eliminates bus contention during power-up by ensuring transceiver enable follows MCU reset release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 4.63 V reset threshold, open-drain output, requires external pull-up | Lacks push-pull drive; adds 1 resistor and increases board area; higher threshold may miss early 5 V droop | Select only if legacy design uses MAX809 footprint and 4.63 V threshold suffices |
| TPS3808G33DBVR | 3.3 V threshold, adjustable timeout via capacitor, 1.6 µA quiescent current | Not voltage-compatible for 5 V monitoring; requires redesign of sense network and timing RC | Prefer for ultra-low-power 3.3 V systems; not drop-in for APX810-44SRG-7's 5 V use case |
Compared with MAX809TRD3-T and TPS3808G33DBVR, the APX810-44SRG-7 provides exact 5 V rail compatibility, eliminates external components via push-pull output, and delivers tighter threshold tolerance (±0.09 V vs. ±1.5%), making it optimal for cost-sensitive industrial controllers requiring deterministic reset behavior.
Availability
APX810-44SRG-7 is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, network edge routers, and smart energy meters requiring stable component supply and long-term production continuity.
Supply support for APX810-44SRG-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 North America.
The APX809/810 series targets cost-sensitive, space-constrained embedded systems requiring precise, low-power power-supply supervision - especially in portable, industrial, and computing applications where reliability and BOM reduction are critical.
FAQ
What is the exact reset threshold voltage for APX810-44SRG-7?
The APX810-44SRG-7 has a nominal reset threshold of 4.38 V, with a guaranteed range of 4.31 V to 4.47 V at +25°C and 4.29 V to 4.47 V over -40°C to +85°C ambient. This is laser-trimmed during production and documented in DS31322 Rev. 5–3 Table 1.
Does APX810-44SRG-7 require an external pull-up resistor?
No. The APX810-44SRG-7 features a push-pull active-high RESET output capable of sinking 1.2 mA, eliminating the need for an external pull-up resistor. This reduces component count, PCB area, and potential noise coupling from resistor traces.
Can APX810-44SRG-7 operate with VCC below 2 V?
Yes. The device guarantees valid RESET output down to VCC = 1 V. Below 1 V, the output enters high-impedance state; however, most microprocessors are nonfunctional below 1 V, so system-level behavior remains safe and deterministic.
Is APX810-44SRG-7 pin-compatible with APX809-44SRG-7?
Yes - both share identical SOT23-3 (SR) pinout (VCC, GND, RESET), but differ in logic polarity: APX810-44SRG-7 outputs active-high RESET, while APX809-44SRG-7 outputs active-low. Swapping requires verifying downstream logic level compatibility.
APX810-44SRG-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:
- Not For New Designs
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT23R
APX810-44SRG-7 FAQ
1.How can I place an order for APX810-44SRG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810-44SRG-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 APX810-44SRG-7 reliable?
The price and inventory of APX810-44SRG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810-44SRG-7 is usually 5 days.
3.What payment methods are accepted for APX810-44SRG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810-44SRG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810-44SRG-7?
APX810-44SRG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810-44SRG-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 APX810-44SRG-7?
For technical support, including APX810-44SRG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810-44SRG-7 requirements.
6.How does Aetrix verify that APX810-44SRG-7 is sourced from the original manufacturer or authorized distributors?
All APX810-44SRG-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 APX810-44SRG-7 meets industry standards.
7.What is the process for return or replacement of APX810-44SRG-7?
All APX810-44SRG-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810-44SRG-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 APX810-44SRG-7 part is unused and in its original packaging.
Return procedure for APX810-44SRG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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