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Diodes Incorporated APX809S00-23SA-7
- Part No.:
- APX809S00-23SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX809S00-23SA-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,157
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Product details
Overview
APX809S00-23SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in digital systems. It monitors +2.25V supply rails, asserts an active-low push-pull RESET signal when VCC drops below 2.25V (±30 ppm/°C drift), holds reset for ≥240ms after recovery, and operates down to VCC = 1.0V - used in battery-powered controllers and portable instrumentation.
For engineers reviewing the APX809S00-23SA-7 datasheet, APX809S00-23SA-7 pinout, APX809S00-23SA-7 application, or APX809S00-23SA-7 equivalent, key selection criteria include reset threshold accuracy (2.25V ±30mV), guaranteed operation at 1V supply, 7µA typical supply current, and SOT23-3 push-pull output compatibility with 3.3V/5V µP reset inputs.
Technical Context
The device implements a precision bandgap-based voltage comparator with hysteresis-free threshold detection and internal power-on reset timing logic. Its reset assertion delay (tDELAY) is fixed at 240ms minimum after VCC rises above VTH, independent of temperature or supply ramp rate.
Designed for low-noise immunity, the comparator ignores fast transients on VCC and guarantees valid logic states across -40°C to +125°C ambient. The push-pull output drives µP reset pins directly without external pull-up resistors, supporting sink currents up to 3.2mA at 0.4V VOL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±30mV at +25°C; enables reliable monitoring of +2.25V logic rails |
| Supply Current | 7µA typical; allows continuous operation in multi-year battery-powered devices |
| Reset Timeout | ≥240ms after VCC > VTH; ensures full µP initialization before release |
| Operating Voltage Range | 1.0V to 5.5V; supports reset assertion even during brownout or deep discharge |
| Output Type | Active-low push-pull; eliminates need for external pull-up resistor on µP reset input |
| Temp Coefficient | 30 ppm/°C; maintains threshold stability over industrial temperature range (-40°C to +125°C) |
| VOL @ 1.2mA | ≤0.3V; ensures solid logic-low state for µP reset pin under load |
Pinout & Package
SOT23-3 (SA) package: ultra-compact 2.9mm × 1.3mm surface-mount outline with gull-wing leads, RoHS-compliant "Green" molding compound (Br/Cl <1500ppm total, Sb <1000ppm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path for internal comparator and output stage |
| 2 | RESET | Active-low push-pull reset output; sinks current when asserted, high-impedance when released |
| 3 | VCC | Power supply input; powers internal circuitry and defines monitored rail |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | Enables direct supervision of +2.25V I/O domains without external resistor dividers |
| Guaranteed operation down to 1.0V VCC | Ensures reset remains active through deep brownout conditions common in Li-ion discharge profiles |
| No external components required | Reduces BOM count and PCB area vs. discrete reset circuits using comparators and RC timers |
| 240ms minimum reset timeout | Meets JEDEC JESD78 reliability requirements for µP power-on initialization timing |
| Push-pull output architecture | Drives reset lines directly without pull-up resistors, reducing standby leakage and layout sensitivity |
Applications
| Battery-Powered Instrumentation | Industrial Microcontroller Supervision |
|---|---|
Use Scenario: Handheld multimeter with Li-ion battery and ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Monitors 2.25V analog reference rail and asserts reset if voltage sags below specification during battery discharge. Use Value: Prevents firmware corruption by holding MCU in reset until stable 2.25V reference is restored post-brownout. | Use Scenario: Programmable logic controller (PLC) I/O module powered from isolated 3.3V DC-DC converter. IC Role / Device Role / Timing Role: Detects undervoltage on 3.3V supply feeding FPGA configuration memory and peripheral interfaces. Use Value: Ensures FPGA reconfiguration only occurs after full 3.3V stabilization, avoiding bitstream loading errors. |
| Embedded Sensor Node | USB-C Powered Peripheral |
Use Scenario: Wireless environmental sensor node using Nordic nRF52832 and coin-cell battery. IC Role / Device Role / Timing Role: Supervises 2.25V LDO output powering RF transceiver and ADC reference. Use Value: Guarantees radio and sensor subsystems remain held in reset until reference voltage meets 12-bit ADC accuracy requirements. | Use Scenario: USB-C audio adapter with integrated DAC and 2.25V analog supply derived from USB PD rail. IC Role / Device Role / Timing Role: Monitors 2.25V analog domain to prevent pop/noise during USB-C power negotiation transients. Use Value: Eliminates audible artifacts by asserting reset during VBUS voltage dips below 4.75V during PD contract renegotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB22DBZR | 2.2V threshold, 350ms reset timeout, open-drain output | Requires external pull-up; longer timeout may delay system boot | Choose if open-drain flexibility needed for wired-OR reset buses |
| MAX809SEUR+T | 2.5V threshold, 240ms timeout, push-pull output | Higher threshold unsuitable for 2.25V rails; may assert prematurely | Use only if system uses 2.5V supply and tolerance allows 250mV margin |
Compared with TLV803EB22DBZR and MAX809SEUR+T, APX809S00-23SA-7 uniquely matches the 2.25V rail with push-pull drive and minimal 7µA quiescent current - critical for long-life battery operation where pull-up leakage or threshold mismatch would compromise reliability.
Availability
APX809S00-23SA-7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial microcontroller supervision, and embedded sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for APX809S00-23SA-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 and consumer markets.
This part belongs to the APX809S/810S micro-power voltage detector product line, engineered specifically for cost-sensitive, space-constrained µP supervisory applications demanding ultra-low IQ and precise threshold accuracy across wide temperature ranges.
FAQ
What is the exact reset threshold voltage for APX809S00-23SA-7?
The APX809S00-23SA-7 has a nominal reset threshold of 2.25V, with a guaranteed range of 2.22V to 2.29V at +25°C and ±30 ppm/°C temperature coefficient over -40°C to +125°C. This value is laser-trimmed during production and specified in the Electrical Characteristics table of DS39140 Rev. 2–2.
Does APX809S00-23SA-7 require an external pull-up resistor on the RESET pin?
No. APX809S00-23SA-7 features a push-pull output stage that actively drives LOW during reset and HIGH when released, eliminating the need for an external pull-up resistor. This reduces BOM count, PCB area, and standby current compared to open-drain alternatives.
Can APX809S00-23SA-7 operate reliably at VCC = 1.2V?
Yes. The device guarantees correct reset logic state and functional operation down to VCC = 1.0V, as confirmed in the Recommended Operating Conditions table. At 1.2V, it will assert RESET if VCC falls below 2.25V (which it inherently does), and maintain valid output levels per VOL/VOH specs with ISINK ≤ 3.2mA.
What is the meaning of "-23" and "-7" in APX809S00-23SA-7?
"-23" denotes the reset threshold variant: 2.25V nominal (23 → 2.25V). "-7" indicates tape-and-reel packaging: 3,000 units per 7-inch reel. "SA" specifies the SOT23-3 package variant with standard leadframe geometry per Diodes' ordering matrix in DS39140.
APX809S00-23SA-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 Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX809S00-23SA-7 FAQ
1.How can I place an order for APX809S00-23SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX809S00-23SA-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 APX809S00-23SA-7 reliable?
The price and inventory of APX809S00-23SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX809S00-23SA-7 is usually 5 days.
3.What payment methods are accepted for APX809S00-23SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX809S00-23SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX809S00-23SA-7?
APX809S00-23SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX809S00-23SA-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 APX809S00-23SA-7?
For technical support, including APX809S00-23SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX809S00-23SA-7 requirements.
6.How does Aetrix verify that APX809S00-23SA-7 is sourced from the original manufacturer or authorized distributors?
All APX809S00-23SA-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 APX809S00-23SA-7 meets industry standards.
7.What is the process for return or replacement of APX809S00-23SA-7?
All APX809S00-23SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX809S00-23SA-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 APX809S00-23SA-7 part is unused and in its original packaging.
Return procedure for APX809S00-23SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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