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Diodes Incorporated AP43331NMTR-G1
- Part No.:
- AP43331NMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Power Management - Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP43331NMTR-G1.pdf
- Description:
- ACDC DECODER,SO-8,T&R,4K
- Quantity:
- Payment:
- Shipping:
Inventory:3,473
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Product details
Overview
AP43331NMTR-G1 from Diodes Incorporated is a secondary-side Quick Charge 3.0 Class A controller IC for AC-DC USB chargers, providing programmable constant voltage (5V/9V/12V) and constant current regulation with ±0.5% CV reference accuracy, 0.2V QC3.0 step resolution, and integrated cable compensation up to 110 mV/A. It replaces TL431-based feedback in QC3.0-compliant adapters.
For engineers reviewing the AP43331NMTR-G1 datasheet, AP43331NMTR-G1 pinout, AP43331NMTR-G1 application, or AP43331NMTR-G1 equivalent, key selection criteria include QC3.0 Class A protocol decoding, dual-loop CV/CC regulation with independent references, safe-discharge timing (120 ms), OVP/UVP thresholds per output voltage level, and SO-8 thermal resistance (129 °C/W).
Technical Context
The AP43331NMTR-G1 implements a dual-loop analog control architecture: the CV loop uses a transconductance amplifier (1.5–12 mA/mV) comparing VCTRL against precision references (0.50 V @5V, 0.90 V @9V, 1.20 V @12V), while the CC loop employs a separate transconductance amplifier (2–20 mA/mV) comparing VSENSE against mode-specific references (75 mV @5V, 50 mV @9V, 37.5 mV @12V). Both loops drive the VOUT sink output to modulate optocoupler current.
Its QC3.0 decoder interprets D+/D- voltage combinations (e.g., 3.3V/0.6V → 9V) to reconfigure internal CV/CC references and enable cable compensation (RCABLE = 100 mV/A typical). The device includes dedicated OVP (6.0 V / 10.8 V / 14.4 V thresholds) and UVP (3.15 V / 7.02 V / 9.36 V) comparators with debounce timers (100 ms / 30 ms), plus an active discharge circuit triggered when output voltage steps down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CV Reference Accuracy | ±1% over -40°C to +85°C; ensures stable 5V/9V/12V output despite temperature drift. |
| QC3.0 Voltage Step | 0.2 V discrete steps; enables fine-grained power optimization without communication overhead. |
| Cable Compensation | 100 mV/A typical; offsets IR drop across USB cables to maintain target voltage at device connector. |
| OVP Thresholds | 6.0 V (5V mode), 10.8 V (9V), 14.4 V (12V); prevents damage during transient overvoltage events. |
| VOUT Sink Current | 20 mA typical at 4V; drives standard PC817-type optocouplers without external amplification. |
| Start-up Voltage | 3.0 V typical; allows reliable operation from low-voltage auxiliary windings during light-load conditions. |
| Operating Supply Range | 3.2 V to 12 V on VCC; supports wide-input auxiliary supplies including post-regulated 5V or 9V rails. |
Pinout & Package
AP43331NMTR-G1 is housed in a standard SO-8 package (5.8 mm × 4.9 mm, 1.27 mm pitch) with exposed pad for thermal enhancement and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ICTRL | Non-inverting input of CC amplifier | Connects to top of current-sense resistor RCSS; sets CC trip point via VREF_CC and RCSS value. |
| 2 GND | Analog ground reference | Common return for all internal amplifiers and protection comparators; must be low-impedance. |
| 3 VOUT | Current-sink output | Sinks up to 50 mA to drive optocoupler LED; regulates primary-side duty cycle via feedback loop. |
| 4 VSENSE | Inverting input of CC amplifier | Connects to bottom of RCSS; completes current-sense differential pair for accurate CC regulation. |
| 5 VCTRL | Inverting input of CV amplifier | Accepts resistor-divider voltage from output; compares against internal CV reference for voltage setpoint. |
| 6 VCC | Supply input | Power source for internal bias and logic; requires ≥1 µF ceramic capacitor to GND for stability. |
| 7 D- | USB data line (negative) | Inputs QC3.0 handshake signals; internal 19.5 kΩ pull-down enables DCP detection and protocol decode. |
| 8 D+ | USB data line (positive) | Inputs QC3.0 handshake signals; internal glitch filters (1.25 s high, 50 µs low) reject noise during negotiation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated QC3.0 Class A decoder | Directly interprets D+/D- voltage pairs (e.g., 3.3V/0.6V) to configure CV/CC references without MCU intervention. |
| Output cable compensation | 100 mV/A gain applied to sensed current; maintains ±0.5% output voltage accuracy at load end of 1m/24AWG cable. |
| Safe-discharge circuitry | 70 mA average discharge current; reduces 12V→5V transition time to 120 ms, preventing overvoltage stress on connected devices. |
| Independent OVP/UVP per mode | Differentiated thresholds (e.g., 10.8V OVP @9V mode) prevent false triggering during dynamic voltage transitions. |
| No external shunt regulator required | Replaces TL431 + optocoupler bias network; reduces BOM count by 3 components and improves startup reliability. |
Applications
| Smartphone Fast Charging Adapter | Tablet Wall Charger |
|---|---|
|
Use Scenario: 18W QC3.0 wall adapter powering smartphones with variable voltage negotiation. IC Role / Device Role / Timing Role: Secondary-side feedback controller managing real-time CV/CC switching and cable compensation during D+/D- handshake. Use Value: Enables 12V/1.5A charging with <1% output deviation at device port, reducing heat generation by 15% vs fixed 5V/3A design. |
Use Scenario: 27W QC3.0 tablet charger supporting 9V/3A and 12V/2.25A profiles. IC Role / Device Role / Timing Role: Dual-loop regulator maintaining precise 9V output under 3A load while compensating for 300 mV cable drop. Use Value: Achieves 92% system efficiency at full load by minimizing conduction losses through higher voltage, lower current delivery. |
| Multi-Port USB PD/QC Hybrid Charger | USB-C Accessory Power Module |
|
Use Scenario: Dual-port charger where one port implements QC3.0 and another uses USB PD. IC Role / Device Role / Timing Role: Dedicated QC3.0 channel controller handling D+/D- signaling independently of PD controller's CC logic. Use Value: Allows backward compatibility with legacy QC-enabled phones without requiring firmware updates or protocol arbitration. |
Use Scenario: Compact USB-C accessory (e.g., HDMI dongle) with integrated 5V/9V boost converter for active circuitry. IC Role / Device Role / Timing Role: Secondary-side voltage supervisor ensuring safe 9V delivery only after QC3.0 handshake completion. Use Value: Prevents accidental 9V application to 5V-only circuits via hardware-enforced protocol validation before voltage ramp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar QC3.0 secondary-side controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4281-AEC1 from Monolithic Power Systems | Automotive-grade AEC-Q100 qualified; wider -40°C to +125°C operating range; no integrated QC3.0 decoder (requires external MCU). | Targeted at automotive infotainment USB ports; lacks native QC3.0 support, needing software protocol stack. | Select when AEC-Q100 compliance and extended temperature are mandatory, and MCU resources exist for QC3.0 implementation. |
| INN3370C from Power Integrations | Integrated primary-side QR flyback controller with embedded QC3.0 decoder; eliminates optocoupler and secondary-side controller entirely. | Reduces component count by 40%; targets cost-sensitive single-port adapters where primary-side regulation suffices. | Select when BOM reduction and simplified layout outweigh need for secondary-side precision and cable compensation. |
Compared with MPQ4281-AEC1 and INN3370C, the AP43331NMTR-G1 delivers optimal balance of native QC3.0 Class A compliance, analog CV/CC precision, and cable compensation-making it ideal for high-efficiency, discrete secondary-side designs where optocoupler feedback remains preferred.
Availability
AP43331NMTR-G1 is available at Aetrix Electronics and suitable for smartphone fast chargers, tablet wall adapters, multi-port hybrid chargers, and USB-C accessory power modules requiring stable component supply and full QC3.0 Class A compliance.
Supply support for AP43331NMTR-G1 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 computing markets.
The AP43331NMTR-G1 belongs to Diodes' USB power delivery controller product line, designed specifically to replace TL431-based feedback in Qualcomm Quick Charge 3.0-compliant AC-DC adapters while adding cable compensation and safe-discharge functionality.
FAQ
What is the minimum VCC start-up voltage for AP43331NMTR-G1?
The AP43331NMTR-G1 starts operation at 3.0 V typical on the VCC pin, with guaranteed function down to 2.8 V. This allows reliable initialization from auxiliary windings delivering ≥3.2 V under all load conditions, avoiding brown-out during light-load startup sequences.
How does the AP43331NMTR-G1 implement cable compensation?
The device measures output current via RCSS and applies a 100 mV/A gain to generate a correction voltage added to the VCTRL divider node. This offsets voltage drop across the USB cable, ensuring the regulated voltage at the device connector matches the programmed CV setpoint within ±0.5%.
Can AP43331NMTR-G1 operate without QC3.0-compatible devices connected?
Yes. When no QC3.0 handshake occurs, the AP43331NMTR-G1 defaults to 5V constant voltage mode with automatic fallback to 5V OVP/UVP thresholds and standard CC regulation, ensuring safe operation with legacy USB devices.
What is the purpose of the ICTRL and VSENSE pins?
ICTRL is the non-inverting input of the CC amplifier and connects to the high-side of the current-sense resistor; VSENSE is its inverting input connected to the low-side. Together they form a differential current-sense interface enabling accurate CC regulation independent of ground path noise.
AP43331NMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Current - Supply:
- 880µA
- Voltage - Supply:
- 3.2V ~ 12V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
AP43331NMTR-G1 FAQ
1.How can I place an order for AP43331NMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP43331NMTR-G1 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 AP43331NMTR-G1 reliable?
The price and inventory of AP43331NMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP43331NMTR-G1 is usually 5 days.
3.What payment methods are accepted for AP43331NMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP43331NMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP43331NMTR-G1?
AP43331NMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP43331NMTR-G1 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 AP43331NMTR-G1?
For technical support, including AP43331NMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP43331NMTR-G1 requirements.
6.How does Aetrix verify that AP43331NMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP43331NMTR-G1 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 AP43331NMTR-G1 meets industry standards.
7.What is the process for return or replacement of AP43331NMTR-G1?
All AP43331NMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP43331NMTR-G1, 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 AP43331NMTR-G1 part is unused and in its original packaging.
Return procedure for AP43331NMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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