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Diodes Incorporated AP1703AWG-7
- Part No.:
- AP1703AWG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP1703AWG-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AP1703AWG-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 battery-powered controllers and embedded microcontrollers.
For engineers reviewing the AP1703AWG-7 datasheet, AP1703AWG-7 pinout, AP1703AWG-7 application, or AP1703AWG-7 equivalent, key selection criteria include reset threshold accuracy (±1.5% at 25°C), push-pull output drive capability (1.2mA sink), transient immunity (100µs/100mV glitch rejection), and operation over –40°C to +105°C junction temperature.
Technical Context
The AP1703AWG-7 implements a precision bandgap-based voltage comparator with internal 2.25V reference (±1.5% tolerance), 30 ppm/°C tempco, and a monostable delay circuit that enforces ≥240ms reset assertion after VCC rises above threshold. Its push-pull output eliminates external pull-up resistors.
Designed for brownout detection in low-voltage digital systems, it asserts RESET low when VCC drops below 2.25V and holds it low for ≥240ms after VCC recovers - independent of VCC slew rate. The comparator ignores transients ≤100µs wide at 100mV overdrive, ensuring noise immunity without false triggers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.25V ±1.5% at 25°C - ensures reliable reset assertion before 3.3V or 2.5V supplies fall outside functional range |
| Reset Timeout | 240ms min - guarantees sufficient hold time for µP initialization across power-up ramp rates |
| Supply Current | 20µA typ. - enables use in always-on battery-backed monitoring without significant drain |
| Output Type | Push-pull active-low - drives RESET directly without external pull-up; sinks 1.2mA at VCC ≥ VTH |
| VCC Operating Range | 1.0V to 5.5V - supports valid reset assertion down to 1V, enabling brownout detection before logic failure |
| Tempco | 30 ppm/°C - limits threshold drift to <±15mV over –40°C to +105°C, preserving margin in industrial environments |
| Transient Immunity | 100µs max pulse width at 100mV overdrive - rejects common power rail glitches without spurious reset |
Pinout & Package
AP1703AWG-7 is housed in a lead-free, green SC59-3L (SOT-23 compatible) surface-mount package measuring 2.90–3.10 mm × 1.50–1.70 mm × 1.00–1.30 mm, with gull-wing leads and 0.95 mm pitch.
| 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 supply input; monitors system rail; device operates from 1.0V to 5.5V with full functionality |
| 3 | RESET | Active-low push-pull output; drives µP reset pin low during undervoltage; no external pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.25V threshold | ±1.5% tolerance at 25°C ensures deterministic reset point for 2.5V/3.3V systems without margin loss |
| Guaranteed reset validity to VCC = 1V | Enables early brownout detection before digital logic becomes unreliable, critical for fail-safe shutdown |
| No external components required | Integrates reference, comparator, timer, and push-pull driver - reduces BOM count and PCB area vs discrete solutions |
| 200ms minimum power-on reset pulse | Meets JEDEC JESD8-12B timing requirements for most 8-/16-bit microcontrollers and ASICs |
| Lead-free / RoHS-compliant (SC59-3L) | Meets EU Directive Annex exemptions for high-temp solder; compatible with standard reflow profiles |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
|
Use Scenario: PLC I/O modules powered from 3.3V DC-DC converters subject to load transients and thermal cycling. IC Role / Device Role / Timing Role: Monitors 3.3V rail and asserts active-low RESET to ARM Cortex-M4 MCU during brownout events. Use Value: Prevents corrupted register writes by holding MCU in reset until supply stabilizes for ≥240ms post-recovery. |
Use Scenario: Battery-powered glucose meter with ultra-low-power sleep mode and fast wake-on-button press. IC Role / Device Role / Timing Role: Supervises 2.5V LDO output feeding sensor ADC and BLE SoC; asserts RESET on battery sag. Use Value: 20µA quiescent current extends shelf life; 2.25V threshold aligns with end-of-battery voltage for graceful shutdown. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: 12V-to-3.3V converted supply in door module exposed to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Detects 3.3V rail collapse during cranking and holds microcontroller in reset until stable. Use Value: 30 ppm/°C tempco maintains threshold accuracy across –40°C to +105°C under hood; immune to 100µs transients. |
Use Scenario: Revenue-grade meter with isolated 3.3V domain powering metrology ASIC and real-time clock. IC Role / Device Role / Timing Role: Ensures metrology core resets cleanly after AC line interruption or capacitor discharge. Use Value: Push-pull output drives isolated reset signal without optocoupler or level-shifter; valid down to VCC = 1V covers full discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX809S23-26 | 2.63V threshold, SOT23-3 package, 140ms reset timeout, 0.5µA max ICC | Higher threshold targets 3.0V systems; shorter timeout suits faster-booting MCUs | Select when designing new 3.0V systems requiring lower power and smaller footprint |
| TPS3808G125DBVR | 1.25V threshold, adjustable via external resistor, 200ms timeout, 1.1µA max ICC | Configurable threshold supports custom rails; higher cost and design overhead | Choose only if 2.25V fixed threshold is insufficient and programmability justifies added complexity |
Compared with AP1703AWG-7, APX809S23-26 offers lower power and modern packaging but lacks its 2.25V precision for 2.5V systems; TPS3808G125DBVR provides flexibility at higher cost and design effort, while AP1703AWG-7 delivers optimized, production-proven performance for legacy 2.5V/3.3V brownout protection.
Availability
AP1703AWG-7 is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, automotive body electronics, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for AP1703AWG-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 supervisory applications where precision threshold, low quiescent current, and robust transient immunity are essential - targeting legacy 2.5V/3.3V embedded systems.
FAQ
What is the exact reset threshold voltage of AP1703AWG-7 and how tightly is it specified?
The AP1703AWG-7 has a nominal reset threshold of 2.25V, specified as 2.20V (min) to 2.30V (max) at 25°C, representing ±1.5% tolerance. This tight specification ensures consistent brownout detection across production units without calibration, critical for maintaining functional safety margins in 2.5V and 3.3V systems.
Does AP1703AWG-7 require an external pull-up resistor on the RESET pin?
No. AP1703AWG-7 features a push-pull output stage capable of actively driving RESET low and high. When VCC is above threshold, RESET is driven high to VCC; when VCC falls below threshold, RESET is driven low. No external pull-up resistor is needed, simplifying layout and reducing BOM count.
Can AP1703AWG-7 operate reliably at junction temperatures up to +105°C?
Yes. The AP1703AWG-7 is fully specified over –40°C to +105°C junction temperature. Its reset threshold exhibits only 30 ppm/°C drift, resulting in <±15mV total variation across the full range. Electrical characteristics including supply current, output drive, and timeout are guaranteed within this range per datasheet Rev. 2.
Is AP1703AWG-7 pin-compatible with other members of the AP170x family?
Yes - all AP170x variants (AP1701–AP1704) share identical SC59-3L pinout: Pin 1 = GND, Pin 2 = VCC, Pin 3 = RESET. However, threshold voltage (A–G suffix) and reset polarity (1/3 = active-low, 2/4 = active-high) differ. AP1703AWG-7 is functionally interchangeable with other AP1703-x variants but not with AP1701/2/4 due to polarity mismatch.
AP1703AWG-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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AP1703AWG-7 FAQ
1.How can I place an order for AP1703AWG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1703AWG-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 AP1703AWG-7 reliable?
The price and inventory of AP1703AWG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1703AWG-7 is usually 5 days.
3.What payment methods are accepted for AP1703AWG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1703AWG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1703AWG-7?
AP1703AWG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1703AWG-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 AP1703AWG-7?
For technical support, including AP1703AWG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1703AWG-7 requirements.
6.How does Aetrix verify that AP1703AWG-7 is sourced from the original manufacturer or authorized distributors?
All AP1703AWG-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 AP1703AWG-7 meets industry standards.
7.What is the process for return or replacement of AP1703AWG-7?
All AP1703AWG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP1703AWG-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 AP1703AWG-7 part is unused and in its original packaging.
Return procedure for AP1703AWG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1703AWG-7 Tags
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MIC826SYMT-TR
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