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Diodes Incorporated AP1701DWG-7
- Part No.:
- AP1701DWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1701DWG-7.pdf
- Description:
- IC MPU RESET CIRC 3.08V SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,078
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Product details
Overview
AP1701DWG-7 from Diodes Incorporated is a 3-pin microprocessor reset supervisor IC with active-low push-pull RESET output, 3.08 V reset threshold (±1%), 240 ms minimum reset timeout, and guaranteed operation down to VCC = 1 V. It monitors +3.3 V digital power rails in embedded controllers and portable systems, eliminating external components while providing brownout immunity and transient rejection.
For engineers reviewing the AP1701DWG-7 datasheet, AP1701DWG-7 pinout, AP1701DWG-7 application, or AP1701DWG-7 equivalent, key selection criteria include reset threshold accuracy (±1% at 25°C), supply current (20 µA typ.), SC59 package compatibility, and active-low timing behavior under low-VCC conditions.
Technical Context
The AP1701DWG-7 integrates a precision voltage reference, comparator, and delay timer to assert RESET when VCC falls below 3.08 V and hold it active for ≥240 ms after VCC recovers above threshold. Its push-pull output drives CMOS inputs directly without pull-up resistors.
Designed for +3.3 V systems, it features 30 ppm/°C tempco, immunity to ≤100 µs VCC glitches at 100 mV overdrive, and valid logic states across –40°C to +105°C. Reset assertion is guaranteed for VCC ≥ 1 V; below that, RESET becomes high-impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±1% at 25°C - ensures reliable detection of +3.3 V rail collapse before system instability |
| Reset Timeout | 240 ms min - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 20 µA typ. - enables use in battery-powered devices with multi-year standby life |
| VCC Operating Range | 1.0 V to 5.5 V - supports valid reset assertion even during deep brownout down to 1 V |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor; sinks 1.2 mA min |
| Tempco | 30 ppm/°C - maintains threshold stability across industrial temperature range (–40°C to +105°C) |
| Transient Immunity | 100 µs max glitch duration at 100 mV overdrive - rejects common power rail noise without false resets |
Pinout & Package
AP1701DWG-7 is housed in an SC59-3L (SOT-23 compatible) 3-pin surface-mount package with gull-wing leads, RoHS-compliant lead-free finish, and green marking per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference |
| 3 | RESET | Active-low push-pull output; asserts logic low during reset; no external pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 3.08 V ±1% - matches +3.3 V supply tolerance bands without calibration |
| No external components required | Self-contained supervision - reduces BOM count and PCB area vs. discrete RC reset circuits |
| Guaranteed reset validity to VCC = 1 V | Ensures deterministic state during deep brownout - critical for safe shutdown sequencing |
| Low quiescent current | 20 µA typical - extends battery life in portable instrumentation and IoT edge nodes |
| SC59-3L package | Industry-standard 3-pin footprint - enables drop-in replacement in existing SOT-23 layouts |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
Use Scenario: PLC I/O modules powered by +3.3 V rails subject to intermittent AC line sags and EMI-induced transients. IC Role / Device Role / Timing Role: Microprocessor reset supervisor asserting active-low signal to ARM Cortex-M4 during brownout events. Use Value: Prevents corrupted firmware execution by holding reset for ≥240 ms after VCC recovery, ensuring full register initialization. | Use Scenario: Handheld glucose meters operating on single-cell Li-ion batteries with voltage decay from 4.2 V to 3.0 V. IC Role / Device Role / Timing Role: Power-on reset generator and low-voltage detector triggering controlled shutdown before data loss. Use Value: 3.08 V threshold aligns with end-of-discharge voltage; 20 µA supply current extends usable battery runtime by >15%. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: 12 V automotive systems with DC-DC converted +3.3 V domain exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Brownout detector isolating MCU from unstable supply during engine cranking. Use Value: 100 µs glitch immunity prevents spurious resets during 50 ms cold-crank dips; SC59 package withstands reflow and vibration. | Use Scenario: DIN-rail mounted electricity meters requiring tamper-proof power monitoring during grid voltage fluctuations. IC Role / Device Role / Timing Role: Supervisory watchdog ensuring metering SoC remains in reset until stable +3.3 V is confirmed. Use Value: 30 ppm/°C tempco maintains threshold accuracy across –25°C to +70°C ambient; RoHS-compliant lead-free finish meets EU compliance mandates. |
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 | Same 3.0 V threshold, but with 140 ms reset timeout and 1.6 µA supply current | Optimized for ultra-low-power battery backup; lacks glitch immunity spec beyond 50 µs | Select when minimizing standby current is primary; verify timing margin for processor boot sequence |
| TPS3808G30DBVR | 3.0 V threshold, 200 ms timeout, 1.1 µA supply current, and adjustable delay via capacitor | Supports programmable reset duration; requires external capacitor and occupies more board space | Choose when design requires field-adjustable timeout or tighter current budget than 20 µA |
Compared with APX809S-30T1G and TPS3808G30DBVR, AP1701DWG-7 offers longer guaranteed reset hold time (240 ms vs. 140/200 ms) and superior transient immunity (100 µs @ 100 mV), making it preferable for industrial controllers where robustness outweighs ultra-low-IQ needs.
Availability
AP1701DWG-7 is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, automotive body control modules, and smart energy meters requiring stable component supply and long-term obsolescence management.
Supply support for AP1701DWG-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, designed specifically for cost-sensitive, space-constrained embedded systems requiring precise, self-contained power monitoring without external passive components.
FAQ
What is the exact reset threshold voltage for AP1701DWG-7 and how tightly is it specified?
The AP1701DWG-7 has a nominal reset threshold of 3.08 V, with a tolerance of ±1% at 25°C and ±2% over the full industrial temperature range (–40°C to +105°C). This value is laser-trimmed during production and verified per Diodes Inc. datasheet Rev. 2, page 3, Electrical Characteristics table under "AP1701/2/3/4D".
Does AP1701DWG-7 require an external pull-up resistor on the RESET pin?
No. AP1701DWG-7 features a push-pull output stage capable of actively driving RESET low (≤0.3 V at 1.2 mA sink) and high (≥0.8×VCC at 500 µA source), eliminating the need for an external pull-up resistor. This simplifies layout and improves noise immunity compared to open-drain alternatives.
Can AP1701DWG-7 operate reliably during fast VCC transients, such as those seen in automotive cold-crank scenarios?
Yes. The device is specified to ignore negative-going VCC transients up to 100 µs in duration when the overdrive is 100 mV below the reset threshold. This immunity is validated in the datasheet's "Glitch Immunity" graph (page 6) and makes it suitable for automotive body electronics subjected to ISO 16750-2 load-dump and cranking profiles.
Is AP1701DWG-7 still recommended for new designs, and what is the official migration path?
No - Diodes Incorporated explicitly marks AP1701DWG-7 as "NOT RECOMMENDED FOR NEW DESIGN" in the datasheet header (Rev. 2, page 1). The designated replacement is the APX809/810 series, which offers improved accuracy, lower current, and extended qualification. Migration requires validation of timing margins due to APX809's shorter 140 ms timeout versus AP1701DWG-7's 240 ms.
AP1701DWG-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:
- 3.08V
- 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
AP1701DWG-7 FAQ
1.How can I place an order for AP1701DWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1701DWG-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 AP1701DWG-7 reliable?
The price and inventory of AP1701DWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1701DWG-7 is usually 5 days.
3.What payment methods are accepted for AP1701DWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1701DWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1701DWG-7?
AP1701DWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1701DWG-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 AP1701DWG-7?
For technical support, including AP1701DWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1701DWG-7 requirements.
6.How does Aetrix verify that AP1701DWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1701DWG-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 AP1701DWG-7 meets industry standards.
7.What is the process for return or replacement of AP1701DWG-7?
All AP1701DWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1701DWG-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 AP1701DWG-7 part is unused and in its original packaging.
Return procedure for AP1701DWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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