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Diodes Incorporated AP3983CMTR-G1
- Part No.:
- AP3983CMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
AP3983CMTR-G1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 7SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,409
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Product details
Overview
AP3983CMTR-G1 from Diodes Incorporated is a high-frequency primary-side PWM controller with integrated 650V N-channel MOSFET, designed for offline flyback SMPS in discontinuous conduction mode (DCM). It delivers 7.5W output power in SO-7 package, supports piecewise PFM control, built-in cable compensation (6.0% typical), and operates up to 80 kHz with 7% frequency dithering for EMC improvement - used in compact AC/DC adapters and LED lighting supplies.
For engineers reviewing the AP3983CMTR-G1 datasheet, AP3983CMTR-G1 pinout, AP3983CMTR-G1 application, or AP3983CMTR-G1 equivalent, key selection criteria include primary-side regulation accuracy (±0.6% VFB), low startup current (0.2 µA typ), hiccup-mode short-circuit protection, and thermal shutdown at +160°C with +40°C hysteresis.
Technical Context
The AP3983CMTR-G1 implements primary-side constant-voltage (CV) and constant-current (CC) regulation without optocoupler feedback by sensing auxiliary winding voltage (FB pin) and primary peak current (CS pin). Its p-PFM architecture linearly reduces switching frequency from full load (≤80 kHz) to light load (≥1.8 kHz), entering CC mode when output current reaches 1.5A.
It integrates line voltage compensation (230 Ω internal resistor), leading-edge blanking (500 ns typ), and fixed 0.3V cable drop compensation via CPC pin capacitor. The internal 650V MOSFET features RDS(ON) = 5 Ω (typ), enabling efficient operation across 90–264VAC input with junction temperature range of −40°C to +105°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VFB | 3.95 V ±0.06 V - precise CV reference enabling ±1.5% output voltage regulation without secondary feedback |
| fS(MAX) | 80 kHz - high-frequency operation allows smaller transformer and EMI filter components |
| VCS_H | 900 mV ±72 mV - peak current sense threshold setting primary-side power limit and overcurrent protection point |
| IST | 0.2 µA typ - ultra-low startup current enables direct VCC biasing from high-impedance auxiliary winding |
| BVDSS | 650 V - rated drain-source breakdown voltage supporting universal AC input (90–264VAC) with margin |
| RDS(ON) | 5 Ω typ - on-resistance of integrated MOSFET enabling 7.5W output in SO-7 package at +105°C ambient |
| TOTP | +160°C shutdown with +40°C hysteresis - thermal protection prevents latch-up during overload or poor heatsinking |
Pinout & Package
AP3983CMTR-G1 is housed in a 7-pin SOIC (SO-7) package with gull-wing leads, 1.27 mm pitch, and standard JEDEC MS-012AC outline. Thermal resistance θJA is 85°C/W on single-sided FR-4 board with 300 mm² copper pour connected to drain pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CPC | Cable compensation capacitor terminal | Connects external 10 nF ceramic capacitor to GND to implement fixed 0.3 V output voltage compensation for cable drop |
| 2 - FB | Auxiliary winding feedback input | Senses reflected voltage from transformer auxiliary winding to regulate output voltage without optocoupler |
| 3 - VCC | Internal bias supply input | Receives rectified auxiliary winding voltage; powers IC after startup; UVLO triggers at 6.8 V (turn-off) |
| 4 - CS | Primary current sense input | Monitors voltage across external sense resistor to control peak primary current and enable overcurrent protection |
| 5,6 - D | Integrated MOSFET drain terminals | Dual-drain configuration lowers parasitic inductance; connects directly to primary winding and bulk capacitor |
| 7 - GND | Signal reference ground | Common return for FB, CS, CPC, and internal regulator; must be routed with low impedance to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side regulation | Eliminates optocoupler and TL431, reducing BOM count by ≥3 components and PCB area by >25% |
| Frequency dithering | 7% modulation depth across 5–100% load range suppresses conducted EMI peaks without external circuitry |
| Hiccup-mode SCP | Enters burst-mode shutdown at FB ≤1.5 V during short circuit, limiting average power dissipation to <100 mW |
| Line voltage compensation | 230 Ω internal resistor automatically adjusts current limit to maintain constant output power across 90–264VAC input |
| Low standby consumption | 500 µA typical operating current at no load enables compliance with DOE Level VI and EU CoC Tier 2 efficiency standards |
Applications
| USB-C Wall Adapter | Smart Home Appliance PSU |
|---|---|
Use Scenario: Compact 5V/1.5A USB-C charging adapter for IoT sensors and smart plugs operating from 90–264VAC. IC Role / Device Role / Timing Role: Primary-side PWM controller regulating output voltage and current via auxiliary winding feedback and p-PFM modulation. Use Value: Achieves 5V ±1.5% regulation with dynamic response <100 µs and minimal voltage dip (4.3V min) under 500 mA step load. |
Use Scenario: Auxiliary 12V/0.5A power supply inside Wi-Fi-enabled washing machines and air purifiers. IC Role / Device Role / Timing Role: Integrated switcher providing isolated, regulated DC output without optocoupler or secondary-side controller. Use Value: Reduces component count by 4 parts vs. conventional TL431+opto design while meeting IEC 61000-3-2 Class D harmonic limits. |
| LED Driver for Downlight | Set-Top Box Standby Supply |
Use Scenario: Constant-current LED driver powering 12V/600mA COB LEDs in recessed downlights with universal AC input. IC Role / Device Role / Timing Role: Primary-side CC/CV controller implementing fixed tONS/tOFFS ratio (4:4) for accurate current regulation. Use Value: Delivers ±3% LED current accuracy across line and load variations without secondary shunt regulator. |
Use Scenario: 3.3V/200mA always-on standby supply in digital TV set-top boxes requiring low no-load power (<30 mW). IC Role / Device Role / Timing Role: Low-quiescent-current flyback controller entering deep-sleep mode below 5% load with fS(MIN) = 2 kHz. Use Value: Enables <25 mW no-load consumption, satisfying Energy Star v8.0 standby power requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar primary-side flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP6004DJ-LF-Z | Higher VDS (800V), lower RDS(ON) (3.2Ω), but no built-in cable compensation or line compensation | Requires external circuitry for cable drop correction; better suited for high-line industrial adapters (>264VAC) | Choose when higher breakdown margin and lower conduction loss outweigh need for integrated compensation |
| LNK364PG | No integrated MOSFET; requires external 700V FET; lower max output power (5.5W); no frequency dithering | Lacks EMI optimization features; simpler control loop but needs more external components for protection | Prefer for cost-sensitive, low-power designs where layout space permits discrete FET and basic protection |
Compared with MP6004DJ-LF-Z and LNK364PG, AP3983CMTR-G1 offers superior integration for consumer-grade adapters - combining cable/line compensation, hiccup SCP, and 7% dithering in one SO-7 package - reducing total solution size by ~18% and eliminating four external components versus LNK364PG-based designs.
Availability
AP3983CMTR-G1 is available at Aetrix Electronics and suitable for USB-C adapters, smart appliance PSUs, LED downlight drivers, and set-top box standby supplies requiring stable component supply, RoHS/Green compliance, and production-ready qualification.
Supply support for AP3983CMTR-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The AP3983 series belongs to Diodes' high-efficiency AC/DC controller product line, engineered specifically for cost-sensitive, space-constrained offline SMPS in consumer and industrial power adapters - emphasizing primary-side regulation, low no-load power, and simplified EMI compliance.
FAQ
What is the maximum continuous output power supported by AP3983CMTR-G1?
AP3983CMTR-G1 supports up to 7.5W continuous output power in SO-7 package at +50°C ambient temperature in a non-ventilated enclosed adapter. This rating assumes proper PCB layout with 300 mm² copper pour on drain and CS pins, and operation within recommended conditions (VCC ≤25 V, TJ ≤+105°C).
How does the built-in cable compensation function work?
The AP3983CMTR-G1 implements fixed 0.3V cable compensation using an internal DAC referenced to the FB pin. A 10nF capacitor on the CPC pin filters ripple, enabling automatic adjustment of the CV reference to offset voltage drop across output cables - achieving 6.0% typical compensation ratio (ΔVFB/VFB) from no-load to full-load.
Can AP3983CMTR-G1 operate without an external current sense resistor?
No. AP3983CMTR-G1 requires an external current sense resistor between the CS pin and power ground to monitor primary peak current. The IC compares CS voltage against its internal 900mV threshold to control switching and implement overcurrent protection - no internal sense element is provided.
Is AP3983CMTR-G1 qualified for automotive applications?
No. AP3983CMTR-G1 is not AEC-Q100 qualified and is intended for commercial/industrial applications only. Diodes specifies that automotive-grade variants require separate change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to this Green, RoHS-compliant SO-7 part.
AP3983CMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 650V
- Topology:
- Flyback
- Voltage - Start Up:
- 15.5 V
- Voltage - Supply (Vcc/Vdd):
- 6.82V ~ 25V
- Duty Cycle:
- -
- Frequency - Switching:
- 65kHz
- Power (Watts):
- 6 W
- Fault Protection:
- Over Temperature, Over Voltage, Short Circuit
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 7-SO
- Mounting Type:
- Surface Mount
AP3983CMTR-G1 FAQ
1.How can I place an order for AP3983CMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3983CMTR-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 AP3983CMTR-G1 reliable?
The price and inventory of AP3983CMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3983CMTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3983CMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3983CMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3983CMTR-G1?
AP3983CMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3983CMTR-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 AP3983CMTR-G1?
For technical support, including AP3983CMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3983CMTR-G1 requirements.
6.How does Aetrix verify that AP3983CMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3983CMTR-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 AP3983CMTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3983CMTR-G1?
All AP3983CMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3983CMTR-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 AP3983CMTR-G1 part is unused and in its original packaging.
Return procedure for AP3983CMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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