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Diodes Incorporated AP1702DWG-7
- Part No.:
- AP1702DWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1702DWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1702DWG-7 from Diodes Incorporated is a 3-pin active-high microprocessor reset supervisor IC in SC59 package, featuring 3.08V reset threshold, 240ms minimum reset timeout, 20µA typical supply current, push-pull RESET output, and guaranteed operation down to VCC = 1V. It monitors +3.3V digital systems in portable equipment and embedded controllers to prevent erroneous code execution during power-up, brownout, or transient events.
For engineers reviewing the AP1702DWG-7 datasheet, AP1702DWG-7 pinout, AP1702DWG-7 application, or AP1702DWG-7 equivalent, key selection criteria include reset threshold accuracy (±0.06V), immunity to sub-100µs VCC transients, push-pull drive capability (800µA source), valid reset assertion at VCC ≥ 1V, and RoHS-compliant green SC59 packaging.
Technical Context
The AP1702DWG-7 implements a precision bandgap-based voltage comparator with internal 30 ppm/°C tempco, triggering reset when VCC falls below 3.08V (typical) and holding RESET high for ≥240ms after VCC recovers above threshold. Its push-pull output eliminates external pull-up resistors and ensures defined logic states across full VCC range (1.0–5.5V).
Designed for brownout immunity, the device ignores negative-going VCC transients ≤100µs at 100mV overdrive and guarantees RESET validity down to VCC = 1V - critical for battery-powered systems where supply collapse must be cleanly detected before MCU lockup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (typical), ±0.06V tolerance - matches +3.3V supply rails with 7% margin before reset assertion |
| Reset Timeout | 240ms (min), 600ms (max) - ensures full MCU initialization and clock stabilization before release |
| Supply Current | 20µA (typ), 30µA (max) at VTH+1.0V - enables multi-year battery life in always-on monitoring circuits |
| Output Type | Push-pull active-high RESET - drives CMOS inputs directly without pull-up resistor or level-shifting |
| VCC Range | 1.0V to 5.5V - asserts valid logic high on RESET down to 1V supply, preventing floating states during deep brownout |
| Transient Immunity | Rejects 100µs, 100mV VCC glitches - avoids false resets in noisy automotive or industrial power environments |
Pinout & Package
AP1702DWG-7 is housed in a lead-free, green SC59-3L (SOT-23 compatible) surface-mount package measuring 2.90–3.10mm × 1.50–1.70mm × 1.00–1.30mm, optimized for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 | VCC | Power input pin; supplies internal circuitry and defines reset threshold reference; requires 0.1µF local bypass capacitor |
| 3 | RESET | Active-high push-pull output; sinks 1.2mA / sources 800µA; drives MCU reset input directly without external components |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 3.08V ±0.06V at 25°C with 30 ppm/°C tempco - enables reliable detection of +3.3V supply droop without calibration |
| No external components required | Integrated comparator, timer, and push-pull driver eliminate discrete R/C networks and pull-up resistors |
| Guaranteed reset validity to VCC = 1V | RESET remains logic-high until VCC drops below 1V - prevents undefined MCU state during deep undervoltage |
| Low quiescent current | 20µA typical supply draw - supports >5-year operation on coin-cell batteries in portable instrumentation |
Applications
| Portable Medical Monitors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered ECG and pulse oximeter units requiring fail-safe startup and brownout recovery. IC Role / Device Role / Timing Role: Microprocessor reset supervisor asserting active-high RESET signal during VCC ramp-up and collapse. Use Value: Ensures deterministic MCU boot sequence and prevents corrupted sensor data acquisition during 3.3V Li-ion discharge (2.8–3.6V range). |
Use Scenario: DIN-rail mounted programmable logic controller modules operating in factory environments with noisy 24VDC-to-3.3V conversion. IC Role / Device Role / Timing Role: Power supply monitor generating clean reset pulse after DC/DC converter stabilization. Use Value: Eliminates need for RC-based reset circuits vulnerable to temperature drift and component aging in 0–70°C operating range. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Low-voltage subsystems (e.g., door module, lighting control) powered from vehicle battery via LDO. IC Role / Device Role / Timing Role: Brownout detector asserting RESET during cranking-induced 6–9V battery dips affecting 3.3V rail. Use Value: Maintains reset assertion for ≥240ms after VCC recovery, ensuring full CAN controller and EEPROM initialization before bus arbitration. |
Use Scenario: Revenue-grade electricity meters with tamper-resistant firmware requiring guaranteed reset on AC loss or surge events. IC Role / Device Role / Timing Role: Primary reset generator interfacing with metrology SoC reset input under wide-temperature conditions. Use Value: Push-pull output drives high-capacitance reset net (≥50pF) without rise-time degradation, meeting IEC 62056 timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX809S-30T1G | 3.0V fixed threshold, 140ms min timeout, open-drain output requiring external pull-up | Lower threshold allows earlier reset assertion in 3.3V systems with tighter margins; open-drain limits drive strength | Prefer when board space permits pull-up resistor and faster reset response (<140ms) is acceptable |
| TPS3808G30DBVR | 3.0V threshold, 200ms min timeout, push-pull output, 1.8–6.0V VCC range, higher 12µA IQ | Wider VCC range and lower IQ suit ultra-low-power designs; TI's qualification supports extended temp (-40 to +125°C) | Choose for automotive AEC-Q100 compliance or operation beyond +105°C junction temperature |
Compared with AP1702DWG-7, APX809S-30T1G trades push-pull simplicity for earlier reset activation but adds BOM cost and layout complexity, while TPS3808G30DBVR offers broader environmental specs and lower IQ at higher unit cost and longer lead times.
Availability
AP1702DWG-7 is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, and automotive body control units requiring stable component supply and long-term lifecycle support.
Supply support for AP1702DWG-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 consumer markets.
The AP170x series targets cost-sensitive, space-constrained microprocessor supervisory applications, delivering precision reset functionality in minimal 3-pin packages without external components.
FAQ
What is the exact reset threshold voltage for AP1702DWG-7?
The AP1702DWG-7 has a nominal reset threshold of 3.08V with ±0.06V tolerance at 25°C, corresponding to the 'D' suffix in its part numbering scheme. This value is specified across -40°C to +105°C with 30 ppm/°C tempco, ensuring consistent brownout detection in 3.3V systems.
Does AP1702DWG-7 require an external pull-up resistor on the RESET pin?
No. AP1702DWG-7 features a push-pull output stage that actively drives RESET high or low without external components. Unlike open-drain supervisors, it eliminates the need for a pull-up resistor, reducing BOM count and improving noise immunity on the reset line.
Can AP1702DWG-7 operate reliably below 2.0V VCC?
Yes. The device guarantees valid RESET output down to VCC = 1.0V - meaning RESET remains logic-high until VCC drops below 1V. Below 1V, the output enters high-impedance state, but this aligns with typical MCU shutdown behavior in deep brownout conditions.
Is AP1702DWG-7 pin-compatible with AP1701DWG-7?
No. While both share the same SC59-3L package and pinout (GND-VCC-RESET), AP1701DWG-7 has active-low RESET output, whereas AP1702DWG-7 is active-high. Swapping them requires PCB-level logic inversion or firmware adaptation to avoid inverted reset behavior.
AP1702DWG-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:
- 3.08V
- 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
AP1702DWG-7 FAQ
1.How can I place an order for AP1702DWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1702DWG-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 AP1702DWG-7 reliable?
The price and inventory of AP1702DWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1702DWG-7 is usually 5 days.
3.What payment methods are accepted for AP1702DWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1702DWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1702DWG-7?
AP1702DWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1702DWG-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 AP1702DWG-7?
For technical support, including AP1702DWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1702DWG-7 requirements.
6.How does Aetrix verify that AP1702DWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1702DWG-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 AP1702DWG-7 meets industry standards.
7.What is the process for return or replacement of AP1702DWG-7?
All AP1702DWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1702DWG-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 AP1702DWG-7 part is unused and in its original packaging.
Return procedure for AP1702DWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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