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Diodes Incorporated AP1702CWG-7
- Part No.:
- AP1702CWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1702CWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
AP1702CWG-7 from Diodes Incorporated is an active-high push-pull microprocessor reset supervisor IC designed for +3.0V supply monitoring in embedded digital systems. It asserts RESET when VCC falls below 4.00V (±0.08V), maintains reset for ≥240ms after recovery, draws only 20µA typical supply current, and guarantees valid output down to VCC = 1V. It is used in portable controllers and battery-powered instrumentation requiring reliable power-on reset.
For engineers reviewing the AP1702CWG-7 datasheet, AP1702CWG-7 pinout, AP1702CWG-7 application, or AP1702CWG-7 equivalent, key selection criteria include reset threshold accuracy (4.00V ±2%), push-pull active-high output drive capability, SC59 package compatibility, and guaranteed operation across –40°C to +105°C.
Technical Context
The AP1702CWG-7 implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to monitor VCC against a fixed 4.00V threshold. Its internal delay circuit ensures minimum 240ms reset timeout after VCC exceeds threshold, independent of supply ramp rate.
It features push-pull output stage capable of sourcing 800µA at VCC–1.5V and sinking 3.2mA at 0.4V, with immunity to transients ≤100µs wide when VCC dips 100mV below threshold. Reset assertion is guaranteed for VCC ≥1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V ±0.08V - Ensures reset activation before +3.0V system brownout |
| Reset Timeout | 240ms min - Guarantees sufficient processor initialization time |
| Supply Current | 20µA typ. - Enables use in always-on battery-backed circuits |
| Operating Temp | –40°C to +105°C - Valid for industrial and automotive under-hood environments |
| VCC Range | 1.0V to 5.5V - Supports reset assertion even during deep brownout |
| Output Type | Push-pull active-high - Eliminates need for external pull-up resistor |
| Transient Immunity | 100µs @ 100mV dip - Rejects common power rail noise without false triggers |
Pinout & Package
AP1702CWG-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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for comparator and output driver; must be low-impedance |
| 2 | VCC | Power input; supplies internal reference and output stage; bypass with 0.1µF capacitor |
| 3 | RESET | Active-high push-pull output; drives µP reset input directly without external components |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.00V threshold | ±2% tolerance ensures deterministic reset point for +3.0V systems |
| Guaranteed reset validity to VCC = 1V | Enables robust reset signaling during slow power-down sequences |
| No external components required | Reduces BOM count and PCB area vs. discrete RC reset solutions |
| 200ms min. power-on reset pulse | Meets typical microcontroller minimum reset hold-time requirements |
| Lead-free / RoHS-compliant packaging | Complies with EU Directive Annex Notes 5 and 7 exemptions |
Applications
| Portable Medical Monitors | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered ECG and SpO₂ monitors requiring reliable startup reset during intermittent charging cycles. IC Role / Device Role / Timing Role: Microprocessor supervisory circuit asserting active-high RESET on VCC brownout or cold start. Use Value: 20µA quiescent current extends battery life; 4.00V threshold aligns with Li-ion 3.0V nominal rail; 240ms timeout satisfies ARM Cortex-M boot timing. | Use Scenario: DIN-rail mounted programmable logic controllers operating in factory environments with noisy 24VDC-derived 3.3V rails. IC Role / Device Role / Timing Role: Power supply monitor that initiates controlled firmware reload upon undervoltage detection. Use Value: 30ppm/°C tempco ensures stable threshold over –25°C to +70°C ambient; push-pull output drives opto-isolated reset inputs without level-shifting. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: Low-voltage subsystems (e.g., door module ECUs) powered from switched 3.3V rails subject to load-dump transients. IC Role / Device Role / Timing Role: Brownout detector preventing corrupted EEPROM writes during ignition cycling. Use Value: Immunity to 100µs/100mV VCC glitches avoids spurious resets; operation to –40°C supports cold-cranking conditions. | Use Scenario: Revenue-grade electricity meters with tamper-resistant MCU requiring fail-safe reset during AC line sags. IC Role / Device Role / Timing Role: Primary reset supervisor ensuring deterministic boot after auxiliary power interruption. Use Value: Guaranteed RESET validity down to VCC = 1V prevents undefined MCU state during capacitor hold-up decay; SC59 package enables compact meter 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 |
|---|---|---|---|
| APX810S-33SA-7 | 3.3V reset threshold, SOT23 package, 140ms timeout, 1.6µA IQ | Optimized for +3.3V systems with ultra-low-power sleep modes | Select when lower quiescent current and tighter 3.3V threshold are required; not drop-in due to different VTH and timing |
| TPS3808G33DBVR | 3.3V threshold, adjustable delay, 2.5µA IQ, enable input | Supports configurable reset duration and external enable control | Choose when programmable timeout or system-level enable coordination is needed; higher cost and larger footprint |
Compared with APX810S-33SA-7 and TPS3808G33DBVR, AP1702CWG-7 provides fixed 4.00V threshold and 240ms timeout in a cost-optimized SC59 package, making it suitable for legacy +3.0V designs where pin count and BOM simplicity are prioritized over ultra-low IQ or configurability.
Availability
AP1702CWG-7 is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC controllers, and automotive body control modules requiring stable component supply and long-term industrial lifecycle support.
Supply support for AP1702CWG-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, serving industrial, computing, consumer, and automotive markets with high-reliability components.
The AP170x series belongs to Diodes' microprocessor supervisory product line, engineered specifically for cost-sensitive, space-constrained embedded systems requiring deterministic power-on reset and brownout protection without external components.
FAQ
What is the exact reset threshold voltage for AP1702CWG-7?
The AP1702CWG-7 has a nominal reset threshold of 4.00V, with a guaranteed range of 3.92V to 4.08V at 25°C per the datasheet's Electrical Characteristics table. This value is laser-trimmed during production and exhibits a temperature coefficient of 30ppm/°C, ensuring stability across –40°C to +105°C operating conditions.
Can AP1702CWG-7 drive a microcontroller reset pin directly?
Yes. The AP1702CWG-7 features a push-pull active-high output capable of sourcing up to 800µA at VCC–1.5V and sinking 3.2mA at 0.4V. It interfaces directly with standard CMOS reset inputs (e.g., STM32, PIC, MSP430) without external pull-up resistors or level shifters, provided the MCU's reset pin accepts 3.3V–5V logic levels.
Is AP1702CWG-7 suitable for new designs?
No. Diodes Incorporated explicitly states "NOT RECOMMENDED FOR NEW DESIGN" in the datasheet header and recommends APX809/810 series instead. AP1702CWG-7 remains available for legacy design support and existing production, but new projects should evaluate APX810S-33SA-7 or similar qualified replacements for improved specs and long-term supply assurance.
What package variant does AP1702CWG-7 use?
AP1702CWG-7 uses the SC59-3L package - a lead-free, green, 3-pin surface-mount package identical in footprint to industry-standard SOT-23. Dimensions are 2.90–3.10mm length × 1.50–1.70mm width × 1.00–1.30mm height, with gull-wing leads and JEDEC-compliant pad layout per Diodes document AP02001.
AP1702CWG-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
AP1702CWG-7 FAQ
1.How can I place an order for AP1702CWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1702CWG-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 AP1702CWG-7 reliable?
The price and inventory of AP1702CWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1702CWG-7 is usually 5 days.
3.What payment methods are accepted for AP1702CWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1702CWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1702CWG-7?
AP1702CWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1702CWG-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 AP1702CWG-7?
For technical support, including AP1702CWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1702CWG-7 requirements.
6.How does Aetrix verify that AP1702CWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1702CWG-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 AP1702CWG-7 meets industry standards.
7.What is the process for return or replacement of AP1702CWG-7?
All AP1702CWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1702CWG-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 AP1702CWG-7 part is unused and in its original packaging.
Return procedure for AP1702CWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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