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Diodes Incorporated AP4373AW5-7-01
- Part No.:
- AP4373AW5-7-01
- Manufacturer:
- Diodes Incorporated
- Category:
- Power Management - Specialized
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP4373AW5-7-01.pdf
- Description:
- IC AC-DC CONTROLLER SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,422
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Product details
Overview
AP4373AW5-7-01 from Diodes Incorporated is a secondary-side Qualcomm QC2.0 protocol decoder and opto-coupler driver IC for AC/DC fast-charging adapters. It decodes D+/D− handshake signals (5V/9V), drives OCDRV to control primary-side AP3792, provides safe-discharge of output capacitors, and delivers ≤250 μA operating current in SOT25 package. Used in USB wall chargers requiring QC2.0 compliance.
For engineers reviewing the AP4373AW5-7-01 datasheet, AP4373AW5-7-01 pinout, AP4373AW5-7-01 application, or AP4373AW5-7-01 equivalent, key selection criteria include QC2.0 protocol decoding accuracy, OCDRV drive capability (6–10 mA), VCC operating range (4.5–9 V), D+/D− leakage resistance (300–800 kΩ), and integrated OVP thresholds (5.65–6.05 V at 5V mode).
Technical Context
The AP4373AW5-7-01 implements a dual-path QC2.0 decoder with dedicated D+/D− input comparators referenced to VDAT_REF (0.25–0.40 V) and VSEL_REF (1.8–2.2 V), plus glitch filtering (tGLITCH_DM_LOW: 1–4 ms). Its internal oscillator and timer coordinate handshake timing, including D+/D− short detection (≤20 ms) and dynamic voltage switching.
It integrates a regulated VCC bias (startup at 3.5–4.1 V), OCDRV LED driver with 6–10 mA sink capability, and dual-protection logic: output OVP (5.65–6.05 V / 10–10.8 V) and D+/D− line OVP (4.1–4.7 V each), all with 80–120 ms debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 4.5 V to 9 V - powers internal logic and OCDRV driver without external LDO |
| OCDRV Output Current | 6–10 mA - directly drives opto-coupler LED for reliable signal transfer to primary controller |
| QC2.0 Trigger Voltages | VTRI_5V = 5.06 V typ, VTRI_9V = 8.75 V typ - defines precise transition points between 5V/9V output modes |
| D+/D− Leakage Resistance | 300–800 kΩ - ensures stable bus idle state and prevents false handshake triggering |
| OVP Thresholds | VOVP_5V = 5.65–6.05 V, VOVP_D+ = 4.1–4.7 V - protects downstream devices from overvoltage during fault or misconfiguration |
| Safe-Discharge Current | IDIS = 4–8 mA - actively discharges output caps within ≤10 ms after unplug to meet safety standards |
| Operating Current | ICC_OPR = 150–250 μA - enables ultra-low no-load power consumption in adapter standby mode |
Pinout & Package
SOT25 (5-pin, 2.82 × 1.50 × 1.00 mm) surface-mount package with exposed pad thermal path (θJA = 180 °C/W), MSL Level 3, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OCDRV | Opto-coupler LED driver output | Sinks up to 10 mA to modulate primary-side feedback via opto-isolator |
| 2 - GND | Analog/digital ground reference | Common return for internal regulators, comparators, and discharge circuitry |
| 3 - VCC | Power supply input | Accepts 4.5–9 V; powers internal bias, decoder, and driver stages |
| 4 - D− | USB data line (negative) | Connected to D− bus; monitored for QC2.0 handshake and OVP detection |
| 5 - D+ | USB data line (positive) | Connected to D+ bus; used with D− for voltage-level decoding and short detection |
Key Features
| Feature | Design Value |
|---|---|
| QC2.0 Protocol Decoder | Hardware-based D+/D− voltage comparison with tGLITCH_DM_LOW (1–4 ms) filtering for robust handshake under noise |
| Integrated Opto-LED Driver | OCDRV pin delivers 6–10 mA sink current - eliminates external transistor and reduces BOM count |
| Output Capacitor Discharge | Active 4–8 mA discharge path triggered on unplug - meets IEC/UL 62368-1 capacitor energy safety requirements |
| D+/D− Overvoltage Protection | Independent 4.1–4.7 V clamping on both lines - prevents damage from ESD or bus transients |
| No-Load Power Optimization | VTRI_5V/VTRI_9V thresholds enable periodic OCDRV pulsing at ultralight load - maintains regulation below 10 mW |
Applications
| Smartphone Fast Charging Adapter | Tablet Wall Charger |
|---|---|
|
Use Scenario: 5V/9V QC2.0-compliant AC/DC adapter for smartphones with dynamic voltage negotiation. IC Role / Device Role / Timing Role: Secondary-side protocol decoder and opto-coupler driver coordinating with AP3792 primary controller. Use Value: Enables <20 ms D+/D− handshake and <10 ms output voltage transition while maintaining <250 μA no-load current. |
Use Scenario: Compact 18W wall charger for tablets requiring fast startup and low standby loss. IC Role / Device Role / Timing Role: Voltage-mode selector and safety monitor - detects D+/D− shorts and triggers OCDRV-driven primary regulation. Use Value: Integrates OVP (5.65–6.05 V), D+/D− OVP (4.1–4.7 V), and safe-discharge (≤10 ms) in one SOT25 device. |
| USB-C PD Legacy Negotiation Bridge | Multi-Port Travel Adapter |
|
Use Scenario: Dual-port adapter supporting QC2.0 on one port and legacy 5V charging on another. IC Role / Device Role / Timing Role: Dedicated QC2.0 decoder per port - uses independent D+/D− inputs and OCDRV outputs. Use Value: Supports simultaneous 5V/9V negotiation with tD+_D-_SHORT ≤20 ms and VOTG_SESS_VLD (0.8–4.0 V) startup window. |
Use Scenario: 3-in-1 travel adapter with QC2.0, BC1.2, and fixed 5V outputs. IC Role / Device Role / Timing Role: Secondary-side supervisor - manages mode selection, OVP response, and unplug discharge across shared output rails. Use Value: Reduces component count with built-in RDAT_LKG (300–800 kΩ) and RDM_DWM (14.25–24.8 kΩ) pull-down networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar QC2.0 secondary-side controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP4373B | Revised version with updated QC2.0 timing margins and tighter VTRI tolerance (±1.2% vs ±2.4%) | Same SOT25 footprint and pinout; supports identical AP3792 interface and D+/D− protocols | Select for new designs requiring improved handshake reliability under wide temperature and voltage variation |
| MP6312DS | Single-chip QC2.0 + BC1.2 + Apple 2.4A support; higher integration but requires external opto-driver transistor | Broader protocol coverage but larger solution size and higher BOM cost due to external components | Choose when multi-standard compatibility (not QC2.0-only) is required and PCB area allows for added passives |
Compared with AP4373B, the AP4373AW5-7-01 offers proven timing behavior for legacy QC2.0 implementations but lacks tightened trigger tolerances; versus MP6312DS, it delivers lower system cost and smaller footprint for QC2.0-only applications, though without BC1.2 or Apple charging support.
Availability
AP4373AW5-7-01 is available at Aetrix Electronics and suitable for smartphone fast-charging adapters, tablet wall chargers, and multi-port travel adapters requiring stable component supply and legacy QC2.0 protocol support.
Supply support for AP4373AW5-7-01 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 power management, signal integrity, and connectivity solutions for consumer, industrial, and automotive markets.
The AP4373A belongs to Diodes' USB power delivery controller product line, designed specifically for secondary-side QC2.0 protocol decoding and opto-coupled primary-side control in compact AC/DC adapters.
FAQ
Is AP4373AW5-7-01 still in active production?
No - Diodes Incorporated has officially discontinued the AP4373A series. AP4373AW5-7-01 is obsolete and not recommended for new designs. Aetrix Electronics holds limited legacy stock for replacement and repair use only, with no future replenishment planned.
Can AP4373AW5-7-01 be used with non-Diodes primary controllers?
Yes - the OCDRV pin provides standard opto-coupler LED drive (6–10 mA), compatible with any primary-side controller accepting opto-feedback (e.g., ON Semiconductor NCP1252, TI UCC28730). However, full QC2.0 handshake timing and protection coordination are validated only with AP3792.
What is the function of the OCDRV pin during no-load conditions?
During no-load, AP4373AW5-7-01 pulses OCDRV with periodic current (6–10 mA) based on VTRI_5V/VTRI_9V thresholds. This generates corresponding pulses on the primary-side DET pin via opto-coupler, enabling burst-mode operation and maintaining regulation below 10 mW no-load power.
Does AP4373AW5-7-01 support QC3.0 or USB PD?
No - AP4373AW5-7-01 implements only Qualcomm QC2.0 protocol decoding (5V/9V fixed voltages). It does not support variable-step voltage negotiation (QC3.0), USB Power Delivery communication (SOP packets), or programmable power supply (PPS) profiles.
AP4373AW5-7-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Applications:
- Battery Chargers
- Current - Supply:
- 200µA
- Voltage - Supply:
- 4.5V ~ 9V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP4373AW5-7-01 FAQ
1.How can I place an order for AP4373AW5-7-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP4373AW5-7-01 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 AP4373AW5-7-01 reliable?
The price and inventory of AP4373AW5-7-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP4373AW5-7-01 is usually 5 days.
3.What payment methods are accepted for AP4373AW5-7-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP4373AW5-7-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP4373AW5-7-01?
AP4373AW5-7-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP4373AW5-7-01 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 AP4373AW5-7-01?
For technical support, including AP4373AW5-7-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP4373AW5-7-01 requirements.
6.How does Aetrix verify that AP4373AW5-7-01 is sourced from the original manufacturer or authorized distributors?
All AP4373AW5-7-01 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 AP4373AW5-7-01 meets industry standards.
7.What is the process for return or replacement of AP4373AW5-7-01?
All AP4373AW5-7-01 units undergo pre-shipment inspection (PSI). If there is an issue with AP4373AW5-7-01, 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 AP4373AW5-7-01 part is unused and in its original packaging.
Return procedure for AP4373AW5-7-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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