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Diodes Incorporated AP1702FWG-7
- Part No.:
- AP1702FWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1702FWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1702FWG-7 from Diodes Incorporated is a 3-pin active-high microprocessor reset supervisor IC in SC59 package, monitoring +2.25V supply with ±1.5% threshold accuracy, 240ms minimum reset timeout, 20µA typical supply current, and guaranteed reset validity down to VCC = +1V. It provides push-pull RESET output for reliable power-on/brownout detection in embedded microcontroller systems.
For engineers reviewing the AP1702FWG-7 datasheet, AP1702FWG-7 pinout, AP1702FWG-7 application, or AP1702FWG-7 equivalent, key selection criteria include reset threshold voltage (2.25V), active-high output polarity, SC59-3L package compatibility, transient immunity up to 100µs at 100mV overdrive, and RoHS-compliant green packaging.
Technical Context
The AP1702FWG-7 implements a precision bandgap-based voltage comparator with internal 240ms delay timer and push-pull output stage. Its reset threshold is trimmed to 2.25V (±1.5%) with 30ppm/°C tempco, ensuring stability across –40°C to +105°C operating junction temperature.
It asserts RESET high when VCC falls below 2.25V and holds it for ≥240ms after VCC rises above threshold. The output remains valid down to VCC = +1V, and the device ignores transients ≤100µs at 100mV overdrive due to built-in glitch immunity circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±1.5% - precisely matches +2.25V rail for brownout detection without external calibration |
| Reset Timeout | 240ms min - ensures full microprocessor initialization before release from reset |
| Supply Current | 20µA typ. - enables use in battery-powered systems with multi-year standby life |
| VCC Validity Range | 1.0V to 5.5V - guarantees correct RESET logic state even during deep brownout |
| Output Type | Push-pull active-high - drives CMOS inputs directly without pull-up resistor |
| Transient Immunity | 100µs max at 100mV overdrive - suppresses noise-induced false resets on noisy power rails |
| Tempco | 30ppm/°C - maintains threshold drift <10mV over full industrial temperature range |
Pinout & Package
AP1702FWG-7 is housed in SC59-3L (SOT-23 compatible) 3-pin surface-mount package with gull-wing leads, RoHS-compliant lead-free finish, and green marking per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be low-impedance connection |
| 2 | VCC | Power supply input; monitors voltage level and powers internal circuitry; bypass capacitor required |
| 3 | RESET | Active-high push-pull output; drives high during normal operation, low during reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | ±1.5% tolerance ensures accurate detection of +2.25V supply collapse without margin uncertainty |
| 240ms reset timeout | Guaranteed minimum duration prevents premature microprocessor release before clock stabilization |
| 20µA supply current | Enables integration into ultra-low-power portable devices without impacting battery runtime |
| VCC = 1V reset validity | Maintains defined logic state through deep undervoltage, avoiding floating reset inputs |
| SC59-3L green package | RoHS-compliant, JEDEC-standard footprint compatible with automated SMT assembly and reflow |
Applications
| Industrial PLC Controllers | Portable Medical Sensors |
|---|---|
|
Use Scenario: Power sequencing in programmable logic controllers during AC mains fluctuation or backup battery switchover. IC Role / Device Role / Timing Role: Monitors +2.25V auxiliary rail powering FPGA configuration memory and I/O buffers. Use Value: Prevents corrupted configuration loading by asserting RESET until stable +2.25V is confirmed for ≥240ms. |
Use Scenario: Battery-powered wearable ECG sensor operating from regulated +2.25V LDO output. IC Role / Device Role / Timing Role: Active-high RESET supervisor ensuring MCU remains held during Li-ion cell voltage sag below 2.25V. Use Value: 20µA quiescent current extends single-charge operation beyond 3 years; 1V validity avoids undefined reset state during deep discharge. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: Monitoring +2.25V domain powering CAN transceiver bias and EEPROM interface in BCM sub-system. IC Role / Device Role / Timing Role: Detects brownout on isolated 2.25V rail caused by load dump or alternator ripple. Use Value: 100µs transient immunity rejects ignition noise spikes; push-pull output drives CAN controller reset pin without external components. |
Use Scenario: Supervising +2.25V RTC and metrology ASIC supply in utility-grade electricity meters. IC Role / Device Role / Timing Role: Ensures meter firmware restarts cleanly after power interruption or voltage dip below 2.25V. Use Value: 30ppm/°C tempco maintains threshold accuracy across –40°C to +85°C field environment; SC59 package supports high-density PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX810S22-7 | 2.2V threshold (±1.0%), 140ms timeout, 1.8–5.5V VCC range, same SC59-3L package | Lower threshold and shorter timeout suit tighter-margin 2.2V systems; newer design with improved tempco | Select when upgrading legacy designs requiring tighter threshold tolerance and extended VCC range |
| TPS3808G22DBVR | 2.2V threshold (±0.5%), 200ms timeout, 0.8–6.0V VCC, SOT-23-3 package, higher 45µA ICC | Superior accuracy and wider supply range but higher quiescent current; not drop-in due to different pinout (VCC/RESET/GND vs GND/VCC/RESET) | Choose for new designs needing highest threshold precision and broader voltage support, accepting layout change |
Compared with AP1702FWG-7, APX810S22-7 offers tighter threshold tolerance and newer qualification, while TPS3808G22DBVR delivers superior accuracy and voltage range at the cost of higher current and non-compatible pinout-making APX810S22-7 the preferred upgrade path for SC59-based designs.
Availability
AP1702FWG-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical sensors, automotive body control modules, and smart energy meters requiring stable component supply with long-term lifecycle support.
Supply support for AP1702FWG-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with emphasis on high-reliability power management and signal integrity products.
The AP170x series belongs to Diodes' microprocessor supervisory IC product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring precise, low-power reset functionality across industrial and automotive environments.
FAQ
What is the exact reset threshold voltage and tolerance for AP1702FWG-7?
The AP1702FWG-7 has a nominal reset threshold of 2.25V with a guaranteed tolerance of ±1.5% at 25°C, corresponding to 2.20V to 2.30V. This is confirmed in the Electrical Characteristics table on page 3 of the official datasheet Rev. 2 (January 2007), under "Reset Threshold" for part code 'G'.
Is AP1702FWG-7 pin-compatible with AP1701FWG-7 or AP1703FWG-7?
Yes - all AP170xW variants share identical SC59-3L pinout: Pin 1 = GND, Pin 2 = VCC, Pin 3 = RESET. However, AP1701/3FWG-7 have active-low outputs, whereas AP1702/4FWG-7 are active-high; swapping them requires logic inversion or firmware adjustment.
Does AP1702FWG-7 require an external bypass capacitor, and if so, what value?
Yes - a 0.1µF ceramic bypass capacitor is required between VCC and GND, mounted as close as possible to the device pins. This is explicitly specified in the Typical Application Circuit (page 4) and Applications Information section to ensure transient immunity and stable internal reference operation.
Why is AP1702FWG-7 marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes Incorporated issued this notice because the APX809/810 series offers improved specifications - including tighter threshold tolerance (±1.0%), lower ICC (15µA), and enhanced ESD performance - while maintaining SC59-3L compatibility. AP1702FWG-7 remains fully functional and supported for existing designs and legacy replacements.
AP1702FWG-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AP1702FWG-7 FAQ
1.How can I place an order for AP1702FWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1702FWG-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 AP1702FWG-7 reliable?
The price and inventory of AP1702FWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1702FWG-7 is usually 5 days.
3.What payment methods are accepted for AP1702FWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1702FWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1702FWG-7?
AP1702FWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1702FWG-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 AP1702FWG-7?
For technical support, including AP1702FWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1702FWG-7 requirements.
6.How does Aetrix verify that AP1702FWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1702FWG-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 AP1702FWG-7 meets industry standards.
7.What is the process for return or replacement of AP1702FWG-7?
All AP1702FWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1702FWG-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 AP1702FWG-7 part is unused and in its original packaging.
Return procedure for AP1702FWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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