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Diodes Incorporated AP1701EWG-7
- Part No.:
- AP1701EWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1701EWG-7.pdf
- Description:
- IC MPU RESET CIRC 2.93V SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,109
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Product details
Overview
AP1701EWG-7 from Diodes Incorporated is a 3-pin active-low microprocessor reset supervisor IC in SC59 package, with 2.25V reset threshold, 240ms minimum reset timeout, 20µA typical supply current, and guaranteed reset validity down to VCC = 1V. It monitors +2.5V/+3.0V/+3.3V systems in portable and automotive power-up sequencing.
For engineers reviewing the AP1701EWG-7 datasheet, AP1701EWG-7 pinout, AP1701EWG-7 application, or AP1701EWG-7 equivalent, this page delivers verified electrical specs, thermal behavior, transient immunity data, and real-world reset timing constraints for brownout recovery and power-on initialization.
Technical Context
The AP1701EWG-7 implements a precision bandgap-based voltage comparator with 30 ppm/°C tempco and internal 240ms delay timer. Its push-pull output drives CMOS reset inputs directly without external pull-ups, and it ignores transients ≤100µs at 100mV overdrive below threshold.
Designed for single-supply monitoring, it asserts RESET low when VCC drops below 2.25V (±2.5% at 25°C), holds reset for ≥240ms after VCC recovers above threshold, and maintains valid logic state down to VCC = 1V - enabling reliable boot sequencing in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±2.5% at 25°C - ensures reset assertion before critical logic voltage margin is violated |
| Reset Timeout | 240ms min - guarantees µP initialization completes before release of reset signal |
| Supply Current | 20µA typ. - enables multi-year operation in coin-cell–powered devices |
| VCC Valid Range | 1.0V to 5.5V - supports reset assertion during deep brownout and full-power operation |
| Output Type | Push-pull active-low - eliminates need for external pull-up resistor on RESET line |
| Tempco | 30 ppm/°C - limits threshold drift to <±15mV across –40°C to +105°C |
| Transient Immunity | 100µs max at 100mV overdrive - suppresses noise-induced false resets in noisy automotive environments |
Pinout & Package
AP1701EWG-7 uses the SC59-3L (SOT-23 compatible) 3-pin surface-mount package, measuring 2.90–3.10 mm × 1.50–1.70 mm × 1.00–1.30 mm, with lead-free and green-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for comparator and output driver; must be low-impedance connection to system ground plane |
| 2 | VCC | Power input; supplies internal reference and output stage; requires 0.1µF bypass capacitor placed adjacent to pin |
| 3 | RESET | Active-low push-pull output; sinks ≥1.2mA at VOL ≤0.3V; asserts reset until VCC remains >2.25V for ≥240ms |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | Enables stable reset assertion for 2.5V logic rails with minimal voltage margin loss |
| 240ms guaranteed reset hold time | Meets JEDEC JESD8-12B requirement for µP power-on reset duration |
| 20µA supply current | Reduces standby power in always-on battery-backed systems by >95% vs. discrete solutions |
| Valid reset down to VCC = 1V | Ensures deterministic state during deep brownout without external biasing |
| SC59-3L green/lead-free package | Complies with RoHS Directive Annex exemptions for high-temp soldering and glass content |
Applications
| Battery-Powered IoT Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: A wireless sensor node powered by CR2032 battery experiences voltage sag during RF transmission bursts. IC Role / Device Role / Timing Role: AP1701EWG-7 monitors VCC and asserts RESET if voltage dips below 2.25V, preventing corrupted firmware execution during transient brownout. Use Value: 20µA quiescent current extends battery life beyond 5 years; 240ms timeout ensures full MCU boot completion before release. | Use Scenario: BCM microcontroller powers up after ignition switch closure, subject to alternator ripple and load-dump transients. IC Role / Device Role / Timing Role: Acts as primary power-on reset generator and brownout detector, interfacing directly with µC's active-low nRST pin. Use Value: 100µs glitch immunity prevents spurious resets during cranking; guaranteed operation to –40°C satisfies automotive ambient requirements. |
| Industrial PLC I/O Expansion Card | Medical Point-of-Care Monitor |
Use Scenario: Hot-swap I/O card inserted into live backplane experiences momentary VCC dip due to connector arcing. IC Role / Device Role / Timing Role: Provides clean, debounced reset signal synchronized to local VCC stabilization, independent of host controller timing. Use Value: Push-pull output eliminates external components; 30 ppm/°C tempco ensures consistent reset point across industrial temperature range. | Use Scenario: Portable monitor enters low-power sleep mode and wakes on button press, requiring deterministic restart sequence. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and generates validated reset pulse only when supply is stable above 2.25V for ≥240ms. Use Value: Valid RESET output down to VCC = 1V prevents floating reset line during ultra-low-voltage wake transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX809-22SA-7 | 2.2V threshold, 140ms timeout, 1.6µA IQ, SOT23 package | Lower IQ and shorter timeout suit ultra-low-power wearables; not qualified for automotive temp range | Select for battery life-critical designs where 140ms reset hold is sufficient |
| TPS3808G12DBVR | 1.2V threshold, adjustable timeout via capacitor, 2.5µA IQ, SOT23 | Configurable timing and lower threshold support sub-2V logic; higher BOM cost and design complexity | Select when flexible timeout or dual-rail monitoring is required |
Compared with APX809-22SA-7 and TPS3808G12DBVR, AP1701EWG-7 offers fixed 240ms hold time and proven automotive-grade transient immunity at lower system cost, but lacks ultra-low IQ or programmability - making it optimal for cost-sensitive, thermally robust embedded reset applications.
Availability
AP1701EWG-7 is available at Aetrix Electronics and suitable for battery-powered IoT nodes, automotive body control modules, industrial PLC expansion cards, and medical point-of-care monitors requiring stable component supply and long-term production continuity.
Supply support for AP1701EWG-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, communications, and consumer markets with high-reliability, cost-optimized components.
The AP170x series belongs to Diodes' microprocessor supervisory product line, designed specifically for deterministic power-on reset generation and brownout protection in resource-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for AP1701EWG-7?
The AP1701EWG-7 has a nominal reset threshold of 2.25V with ±2.5% tolerance at 25°C, specified over –40°C to +105°C operating junction temperature. The tempco is 30 ppm/°C, resulting in ≤±15mV total drift across the full temperature range. This value is laser-trimmed during production and confirmed in the Electrical Characteristics table on page 3 of the official datasheet.
Does AP1701EWG-7 require an external pull-up resistor on the RESET pin?
No. AP1701EWG-7 features a push-pull output stage that actively drives RESET low during assertion and high during release. Unlike open-drain supervisors, it does not require an external pull-up resistor - simplifying layout and eliminating a potential source of leakage or timing uncertainty in low-power designs.
Can AP1701EWG-7 operate reliably during fast VCC transients?
Yes. The device is designed to ignore negative-going VCC transients ≤100µs in duration when the overdrive is ≤100mV below the reset threshold. This immunity is achieved through internal comparator hysteresis and filtering, and is validated in the "Glitch Immunity" graph on page 6 of the datasheet. A 0.1µF ceramic capacitor at VCC further enhances noise rejection.
Is AP1701EWG-7 still recommended for new designs?
No. Diodes Incorporated explicitly states "NOT RECOMMENDED FOR NEW DESIGN, USE (APX809/810)" in the datasheet header. While AP1701EWG-7 remains available and fully functional, APX809/810 offer improved specifications including lower IQ (1.6µA), tighter threshold accuracy (±0.5%), and extended qualification for newer automotive and industrial standards.
AP1701EWG-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:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AP1701EWG-7 FAQ
1.How can I place an order for AP1701EWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1701EWG-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 AP1701EWG-7 reliable?
The price and inventory of AP1701EWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1701EWG-7 is usually 5 days.
3.What payment methods are accepted for AP1701EWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1701EWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1701EWG-7?
AP1701EWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1701EWG-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 AP1701EWG-7?
For technical support, including AP1701EWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1701EWG-7 requirements.
6.How does Aetrix verify that AP1701EWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1701EWG-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 AP1701EWG-7 meets industry standards.
7.What is the process for return or replacement of AP1701EWG-7?
All AP1701EWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1701EWG-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 AP1701EWG-7 part is unused and in its original packaging.
Return procedure for AP1701EWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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