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Diodes Incorporated AP1702AWG-7
- Part No.:
- AP1702AWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1702AWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1702AWG-7 from Diodes Incorporated is a 3-pin active-high microprocessor reset supervisor IC in SC59 package, featuring 4.38V precision 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 undervoltage events in embedded controllers and portable equipment.
For engineers reviewing the AP1702AWG-7 datasheet, AP1702AWG-7 pinout, AP1702AWG-7 application, or AP1702AWG-7 equivalent, key selection criteria include reset threshold accuracy (±1.5% over temperature), transient immunity (100µs/100mV glitch rejection), VCC operating range (1.0–5.5V), and lead-free SC59-3L packaging compatibility with automated SMT assembly.
Technical Context
The AP1702AWG-7 implements a precision bandgap-based voltage comparator with internal 240ms delay timer and push-pull output stage. Its reset assertion logic is active-high, triggered when VCC falls below 4.38V (B-grade), with hysteresis minimized to avoid chatter during slow-rising VCC.
Designed for immunity to fast VCC transients, it ignores negative-going glitches ≤100µs at 100mV overdrive and guarantees valid RESET output state for VCC ≥1V. The device requires no external components and operates across –40°C to +105°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V ±1.5% - precisely matches +3.3V system supply with 32% headroom before reset activation |
| Reset Timeout | 240ms min - ensures µP completes power stabilization and internal initialization before release |
| Supply Current | 20µA typ. - enables multi-year battery life in always-on monitoring applications |
| VCC Operating Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout or partial power loss |
| Output Type | Push-pull active-high - eliminates need for external pull-up resistor and reduces BOM count |
| Tempco | 30 ppm/°C - maintains threshold stability across industrial temperature range without calibration |
| Glitch Immunity | 100µs @ 100mV overdrive - prevents false resets from switching noise or ESD-induced supply dips |
Pinout & Package
AP1702AWG-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 high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be low-impedance connection to system ground plane |
| 2 | VCC | Primary power input; supplies internal circuitry and defines reset threshold reference; bypass with 0.1µF capacitor |
| 3 | RESET | Active-high push-pull output; drives µP reset input directly without external pull-up; sinks 1.2mA / sources 800µA |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.38V threshold | Enables reliable supervision of +3.3V systems with ±1.5% tolerance over full temperature range |
| 240ms reset timeout | Guarantees sufficient hold time for microcontroller power sequencing and oscillator startup |
| 20µA supply current | Minimizes quiescent load on battery-backed or energy-harvested power rails |
| VCC = 1V reset validity | Ensures deterministic reset state during deep undervoltage conditions before system collapse |
| No external components | Reduces bill-of-materials cost and PCB footprint while improving reliability vs. discrete solutions |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Power cycling and brownout recovery in DIN-rail mounted programmable logic controllers with isolated 3.3V I/O rails. IC Role / Device Role / Timing Role: Microprocessor reset supervisor asserting active-high RESET signal during undervoltage events on main 3.3V domain. Use Value: Prevents firmware corruption by holding µP in reset until 3.3V stabilizes above 4.38V and remains valid for ≥240ms. |
Use Scenario: Battery-powered handheld ECG devices requiring ultra-low quiescent current and robust power-fail detection. IC Role / Device Role / Timing Role: Low-power supervisor monitoring 3.3V LDO output to trigger controlled shutdown and data save before brownout. Use Value: 20µA supply current extends single-CR2032 battery life beyond 5 years in standby; 1V operation ensures reset remains valid during final battery depletion. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: Reset management in 12V-to-3.3V converted subsystems exposed to automotive load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Voltage supervisor rejecting fast VCC glitches (≤100µs/100mV) while asserting reset during sustained undervoltage. Use Value: Eliminates false resets from alternator noise or ignition switching, improving system uptime and diagnostic accuracy. |
Use Scenario: Tamper-resistant metering platforms where power interruption must trigger secure memory write and cryptographic state lock. IC Role / Device Role / Timing Role: Precision reset generator ensuring deterministic MCU reset timing during AC mains dropout or backup capacitor discharge. Use Value: 4.38V threshold aligns with 3.3V rail tolerance; 240ms timeout guarantees EEPROM write completion before reset release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX810-33SA-7 | 3.08V reset threshold, 200ms timeout, same SC59 package, RoHS-compliant | Designed for +3.0V systems; lower threshold reduces margin for 3.3V rails | Select only if supervising 3.0V logic domains; not drop-in for 3.3V systems due to 1.3V threshold gap |
| TPS3808G12DBVR | 1.232V adjustable threshold via external resistor divider, 200ms timeout, SOT-23-6 | Requires two external resistors; supports custom thresholds but increases BOM and layout complexity | Choose when precise non-standard thresholds (e.g., 2.85V) are required; not suitable for cost-sensitive fixed-threshold designs |
Compared with APX810-33SA-7 and TPS3808G12DBVR, AP1702AWG-7 provides optimal balance of fixed 4.38V accuracy, zero-component integration, and industrial temperature support-making it ideal for production 3.3V controller designs where simplicity and proven reliability outweigh programmability needs.
Availability
AP1702AWG-7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for AP1702AWG-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 was designed specifically for cost-sensitive, space-constrained microprocessor reset supervision in battery-powered and embedded systems-emphasizing zero external components, low quiescent current, and robust transient immunity.
FAQ
What is the exact reset threshold voltage for AP1702AWG-7 and how is it coded?
The AP1702AWG-7 has a nominal reset threshold of 4.38V, designated by the 'B' suffix in its part numbering scheme (AP1702AWG-7). This value is factory-trimmed and specified with ±1.5% tolerance over –40°C to +105°C, confirmed in the Electrical Characteristics table on page 3 of the January 2007 datasheet Rev. 2.
Does AP1702AWG-7 require an external pull-up resistor on the RESET pin?
No. AP1702AWG-7 features a push-pull output stage capable of sourcing up to 800µA and sinking up to 1.2mA, eliminating the need for an external pull-up resistor. This is explicitly stated in the General Description and verified in the VOH/VOL specifications under Electrical Characteristics on page 3 of the datasheet.
Can AP1702AWG-7 operate reliably during fast VCC transients?
Yes. The device rejects negative-going VCC transients ≤100µs duration when the overdrive is ≤100mV below the reset threshold, as documented in the Glitch Immunity graph on page 6 and confirmed in Applications Information on page 4. A 0.1µF ceramic capacitor placed near the VCC pin further enhances immunity.
Is AP1702AWG-7 still recommended for new designs?
No. Diodes Incorporated explicitly states "NOT RECOMMENDED FOR NEW DESIGN, USE (APX809/810)" in the datasheet title and header. APX809/810 offer improved accuracy, tighter tempco, and extended qualification-but AP1702AWG-7 remains fully supported for legacy production and repair programs with validated designs.
AP1702AWG-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:
- 4.63V
- 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
AP1702AWG-7 FAQ
1.How can I place an order for AP1702AWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1702AWG-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 AP1702AWG-7 reliable?
The price and inventory of AP1702AWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1702AWG-7 is usually 5 days.
3.What payment methods are accepted for AP1702AWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1702AWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1702AWG-7?
AP1702AWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1702AWG-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 AP1702AWG-7?
For technical support, including AP1702AWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1702AWG-7 requirements.
6.How does Aetrix verify that AP1702AWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1702AWG-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 AP1702AWG-7 meets industry standards.
7.What is the process for return or replacement of AP1702AWG-7?
All AP1702AWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1702AWG-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 AP1702AWG-7 part is unused and in its original packaging.
Return procedure for AP1702AWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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