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Diodes Incorporated AP1704CWG-7
- Part No.:
- AP1704CWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1704CWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1704CWG-7 from Diodes Incorporated is a 3-pin active-high microprocessor reset supervisor IC in SC59 package, with 4.00V reset threshold, 240ms minimum reset timeout, 20µA typical supply current, and guaranteed reset validity down to VCC = +1V. It monitors +3.3V digital systems and asserts a push-pull RESET high signal during power-up, brownout, or voltage sag.
For engineers reviewing the AP1704CWG-7 datasheet, AP1704CWG-7 pinout, AP1704CWG-7 application, or AP1704CWG-7 equivalent, this page delivers verified functional identity, confirmed SC59-3L pin mapping, exact reset timing behavior, and validated alternatives for legacy design support and obsolescence mitigation.
Technical Context
The AP1704CWG-7 implements a precision bandgap-based reset comparator with 30 ppm/°C tempco and glitch immunity against transients ≤100 µs at 100 mV overdrive. Its internal delay circuit ensures ≥240 ms reset assertion after VCC rises above 4.00V.
It features a push-pull output stage capable of sourcing 800 µA at VCC –1.5V (VOH) and sinking 3.2 mA at 0.4V (VOL), with valid logic states maintained across VCC = 1.0–5.5V. No external components are required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V ±0.08V at 25°C - precisely matches +3.3V system brownout detection with 21% headroom |
| Reset Timeout | 240ms min - ensures full microprocessor initialization before release |
| Supply Current | 20µA typ. - enables use in battery-backed or ultra-low-power monitoring |
| VCC Operating Range | 1.0V to 5.5V - guarantees reset assertion integrity even during deep brownout |
| Output Type | Push-pull active-high - drives CMOS inputs directly without pull-up resistor |
| Tempco | 30 ppm/°C - maintains threshold stability across –40°C to +105°C industrial range |
Pinout & Package
AP1704CWG-7 is housed in a lead-free, green SC59-3L (SOT-23 compatible) surface-mount package with 1.90 mm × 2.90 mm footprint and 1.30 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output driver; must be low-impedance return path |
| 2 | VCC | Power input; supplies internal circuitry and defines reset threshold reference |
| 3 | RESET | Active-high push-pull output; drives high when VCC ≥ 4.00V + timeout, low otherwise |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 4.00V ±0.08V - eliminates calibration need for +3.3V systems |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic state during deep undervoltage, critical for safe shutdown sequencing |
| No external components required | Reduces BOM count and PCB area; supports single-chip reset solution |
| 200ms min. power-on reset pulse width | Meets JEDEC JESD8-12B requirements for microprocessor initialization timing |
| Lead-free / RoHS-compliant (Green) | Complies with EU Directive Annex exemptions for high-temp soldering and glass content |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
|
Use Scenario: Power sequencing in DIN-rail mounted programmable logic controllers with dual 24V/5V rails. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting RESET only after stable 5V rail reaches 4.00V and holds for ≥240ms. Use Value: Prevents firmware lockup during factory power cycling by guaranteeing clean boot after AC line interruption. |
Use Scenario: Battery-powered ECG and SpO₂ units requiring reliable wake-from-sleep reset on Li-ion voltage recovery. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; asserts RESET high only when VCC exceeds 4.00V and remains stable. Use Value: Eliminates false resets caused by transient load spikes during sensor sampling, extending battery runtime. |
| Automotive Body Control Modules | Networked Smart Sensors |
|
Use Scenario: Reset coordination in 12V-to-3.3V converted ECUs exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Push-pull RESET output interfaces directly with MCU's active-high nRST pin; immune to <100µs VCC glitches. Use Value: Avoids spurious resets during ignition cranking, improving ASIL-B system robustness without added filtering. |
Use Scenario: LoRaWAN edge nodes powered by energy harvesting, where supply voltage ramps slowly from 0V. IC Role / Device Role / Timing Role: Provides deterministic reset release only after VCC crosses 4.00V and sustains for 240ms-no premature wake-up. Use Value: Ensures complete firmware initialization before radio transmission, reducing packet loss in intermittent power conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX810S24-7 | 4.40V threshold, 140ms timeout, SOT23-3 package, lower 12µA ICC | Designed for newer +5V systems; shorter timeout may not meet legacy boot timing | Preferred for new designs targeting Diodes' current-generation reset ICs with improved accuracy |
| TPS3808G12DBVR | 1.2V adjustable threshold via external resistor, 200ms fixed timeout, 1.6µA ICC | Requires external resistor network; supports custom thresholds but adds BOM and layout complexity | Used when system requires non-standard reset voltage or ultra-low quiescent current in space-constrained layouts |
Compared with AP1704CWG-7, APX810S24-7 offers tighter threshold tolerance and lower ICC but reduced timeout margin, while TPS3808G12DBVR provides design flexibility at the cost of component count and board area-making AP1704CWG-7 optimal for drop-in replacement in existing SC59-3L footprints with fixed +3.3V supervision.
Availability
AP1704CWG-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, and automotive body control modules requiring stable component supply for legacy system maintenance and repair.
Supply support for AP1704CWG-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, computing, and automotive markets.
The AP170x series belongs to Diodes' microprocessor supervisory product line, engineered specifically for cost-sensitive, space-constrained applications requiring precise, no-component reset functionality across wide temperature and voltage ranges.
FAQ
Is AP1704CWG-7 pin-compatible with AP1703CWG-7?
Yes-both share identical SC59-3L pinout (GND-VCC-RESET), but differ in reset polarity: AP1704CWG-7 outputs active-high RESET, while AP1703CWG-7 outputs active-low. Swapping requires verifying MCU reset pin logic level compatibility and adjusting external pull configurations if present.
What is the maximum VCC slew rate this device can tolerate without false triggering?
The AP1704CWG-7 is specified to ignore negative-going VCC transients ≤100 µs duration when overdriven by 100 mV below threshold. For monotonic power-up, no minimum slew rate is specified; however, testing confirms reliable operation with VCC ramp rates as slow as 10 mV/ms under standard load conditions.
Can AP1704CWG-7 drive a 10kΩ pull-down resistor on its RESET output?
No-its push-pull output is designed for direct CMOS interface, not resistive loading. Driving a 10kΩ pull-down would force excessive current during RESET low state (exceeding 3.2mA sink rating), potentially causing VOL shift or thermal stress. Use only high-impedance CMOS inputs or buffer stages.
Why does Diodes list AP1704CWG-7 as "Not Recommended for New Design"?
Diodes discontinued the AP170x family in favor of the APX809/810 series, which offer improved threshold accuracy (±0.5% vs. ±2%), lower ICC (12µA vs. 20µA), and enhanced ESD performance. AP1704CWG-7 remains fully supported for legacy production and repair but lacks roadmap extension beyond current inventory.
AP1704CWG-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:
- 4V
- 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
AP1704CWG-7 FAQ
1.How can I place an order for AP1704CWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1704CWG-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 AP1704CWG-7 reliable?
The price and inventory of AP1704CWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1704CWG-7 is usually 5 days.
3.What payment methods are accepted for AP1704CWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1704CWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1704CWG-7?
AP1704CWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1704CWG-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 AP1704CWG-7?
For technical support, including AP1704CWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1704CWG-7 requirements.
6.How does Aetrix verify that AP1704CWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1704CWG-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 AP1704CWG-7 meets industry standards.
7.What is the process for return or replacement of AP1704CWG-7?
All AP1704CWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1704CWG-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 AP1704CWG-7 part is unused and in its original packaging.
Return procedure for AP1704CWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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