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Diodes Incorporated AP3983CP7-G1
- Part No.:
- AP3983CP7-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-DIP (0.300", 7.62mm), 7 Leads
- Datasheet:
-
AP3983CP7-G1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 7DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,570
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Product details
Overview
AP3983CP7-G1 from Diodes Incorporated is a high-frequency primary-side controlled power switcher IC with integrated 650V N-channel MOSFET, designed for offline flyback SMPS in AC/DC adapters and auxiliary supplies. It delivers up to 10W output power (PDIP-7 package), employs piece-wise PFM control in DCM, features built-in cable voltage drop compensation (6.00% typical), and supports 1.8–80 kHz variable switching frequency with 7% dithering for EMC improvement.
For engineers reviewing the AP3983CP7-G1 datasheet, AP3983CP7-G1 pinout, AP3983CP7-G1 application, or AP3983CP7-G1 equivalent, this device serves as a cost-optimized, optocoupler-free solution requiring precise primary-side CV/CC regulation, thermal shutdown at +160°C, and low 0.2 µA startup current in compact PDIP-7 packaging.
Technical Context
The AP3983CP7-G1 implements primary-side regulation using auxiliary winding feedback (FB pin) and peak current sensing (CS pin), eliminating secondary-side optocouplers and TL431. Its constant-voltage loop maintains 3.95 V ±6 mV reference at FB, while constant-current mode enforces fixed tONS/tSW = 4/8 ratio under load variation.
It integrates a 650 V BVDSS MOSFET with 5 Ω typical RDS(ON), operates from -40°C to +105°C, and includes hiccup-mode short-circuit protection triggered at FB = 1.5 V, overvoltage shutdown at 7.5 V, and thermal shutdown at +160°C with +40°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 10 W continuous in non-ventilated enclosed adapter at +50°C ambient |
| Switching Frequency | 1.8–80 kHz variable range; 7% dithering improves conducted/radiated EMI |
| FB Reference Voltage | 3.95 V ±6 mV; enables tight ±1% output voltage regulation without optocoupler |
| Cable Compensation | 6.00% typical VOUT compensation ratio; corrects voltage drop across USB/cable loads |
| MOSFET BVDSS / RDS(ON) | 650 V breakdown; 5 Ω typical on-resistance reduces conduction loss in 10W designs |
| Startup Current | 0.2 µA typical; enables direct startup from high-impedance auxiliary winding |
| Thermal Shutdown | +160°C junction temperature with +40°C hysteresis; prevents thermal runaway in sealed enclosures |
Pinout & Package
AP3983CP7-G1 is housed in a 7-pin PDIP package (8.40 × 6.20 × 3.20 mm), optimized for through-hole mounting and thermal dissipation in cost-sensitive AC/DC adapters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CPC | Cable compensation capacitor connection | Connects external 10 nF capacitor to GND to smooth compensation signal and reduce noise sensitivity |
| 2 - FB | Auxiliary winding feedback input | Samples reflected voltage from transformer auxiliary winding to regulate output voltage without optocoupler |
| 3 - VCC | Internal bias supply input | Receives rectified auxiliary winding voltage; powers internal circuitry after startup |
| 4 - CS | Primary current sense input | Detects MOSFET source current via external sense resistor to control peak current and enable CC mode |
| 5,6 - D | Integrated MOSFET drain terminal | Internally connects to drain of 650 V/2 A MOSFET; requires PCB copper pour for thermal management |
| 7 - GND | Signal reference ground | Common return for FB, CS, CPC, and internal regulator; must be low-impedance path 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% |
| Programmable cable compensation | Fixed 0.3 V typical compensation offset enables stable 5 V USB output across 0–2 A load range |
| Hiccup-mode short-circuit protection | Auto-recovery after fault clears; limits average power to <100 mW during sustained short, preventing transformer saturation |
| Line voltage compensation | 230 Ω internal resistor compensates for input line variation, maintaining ±1% output accuracy from 90–264 VAC |
| Leading edge blanking | 500 ns internal LEB suppresses turn-on spikes on CS pin, enabling reliable current sensing with minimal external filtering |
Applications
| USB Wall Adapters | Set-Top Box Auxiliary Supplies |
|---|---|
|
Use Scenario: 5 V/2 A wall charger for smartphones and tablets operating from universal 90–264 VAC input. IC Role / Device Role / Timing Role: Primary-side controller regulating output voltage and current via p-PFM in DCM; replaces optocoupler + shunt regulator. Use Value: Achieves <100 mW no-load consumption and ±1% load regulation across full 0–2 A range without secondary feedback components. |
Use Scenario: 12 V/0.5 A standby and main rail supply in digital cable receivers with strict EMI requirements. IC Role / Device Role / Timing Role: High-frequency flyback controller with 7% frequency dithering to spread spectral energy and pass CISPR-22 Class B emissions. Use Value: Reduces EMI filter component count by 2× while maintaining 10W output capability in compact PDIP-7 footprint. |
| LED Lighting Drivers | Home Appliance Power Supplies |
|
Use Scenario: Constant-current driver for 12 V LED strips in smart lighting systems with dimming interface. IC Role / Device Role / Timing Role: Dual-loop CV/CC controller enforcing tONS/tSW = 4/8 ratio to deliver stable 350 mA output independent of input line or temperature drift. Use Value: Enables flicker-free dimming compatibility and eliminates need for secondary current-sense amplifier or shunt. |
Use Scenario: Main 5 V/1 A and 3.3 V/0.5 A logic supply in washing machine control boards exposed to high ambient temperatures. IC Role / Device Role / Timing Role: Robust primary-side switcher with +160°C thermal shutdown and +40°C hysteresis for reliable operation in enclosed cabinets. Use Value: Sustains full 10W output at +105°C ambient without derating, reducing need for heatsinking or airflow design. |
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 |
|---|---|---|---|
| AP3983DP7-G1 | Higher 18W rating; 2.4 Ω RDS(ON); 1.8 W power dissipation | Supports larger adapters (e.g., laptop chargers); requires larger transformer and heatsink | Select when >10W output or lower conduction loss is required; not drop-in due to higher thermal mass |
| MP6004GJ-Z | 650V MOSFET; 1.2 Ω RDS(ON); 100 kHz max frequency; no built-in cable compensation | Lacks integrated cable compensation; requires external circuitry for USB voltage hold-up | Choose for higher-frequency designs needing tighter EMI control; add external compensation network for cable drop correction |
Compared with AP3983DP7-G1 and MP6004GJ-Z, the AP3983CP7-G1 offers optimal balance of 10W capability, integrated cable compensation, and PDIP-7 manufacturability-making it ideal for cost-sensitive, volume-production adapters where secondary-side simplification and USB compliance are critical.
Availability
AP3983CP7-G1 is available at Aetrix Electronics and suitable for USB wall adapters, set-top box auxiliary supplies, and home appliance power supplies requiring stable component supply, RoHS/Green compliance, and long-term production continuity.
Supply support for AP3983CP7-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 high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.
The AP3983 series belongs to Diodes' primary-side flyback controller product line, engineered specifically to eliminate optocouplers in low-to-mid power AC/DC adapters while maintaining tight CV/CC regulation and robust protection.
FAQ
What is the maximum continuous output power supported by AP3983CP7-G1?
The AP3983CP7-G1 delivers up to 10 W continuous output power in a non-ventilated enclosed adapter at +50°C ambient temperature, as validated per Diodes' DS36784 Rev. 5–3 test conditions. This rating assumes PDIP-7 packaging, standard FR-4 PCB layout with 300 mm² copper pour, and operation within -40°C to +105°C junction temperature range.
How does the built-in cable compensation function work?
The AP3983CP7-G1 applies a fixed 0.3 V offset to the FB reference voltage, corresponding to a 6.00% typical compensation ratio (ΔVFB/VFB). A 10 nF capacitor on the CPC pin filters ripple, enabling stable 5 V output across full load range despite voltage drop in USB cables-no external op-amp or compensation network required.
Can AP3983CP7-G1 operate without an auxiliary winding?
No. The AP3983CP7-G1 requires an auxiliary winding on the flyback transformer to supply VCC after startup and provide voltage feedback via the FB pin. The IC cannot bootstrap or regulate without this winding, as it lacks high-voltage start-up circuitry or alternative feedback paths-auxiliary winding is mandatory for both bias and regulation.
What protection features are integrated into AP3983CP7-G1?
The AP3983CP7-G1 integrates hiccup-mode short-circuit protection (triggered at FB = 1.5 V), overvoltage protection (shuts down at FB = 7.5 V), overtemperature protection (+160°C shutdown with +40°C hysteresis), and leading-edge blanking (500 ns) on the CS pin. All protections are fully internal-no external components needed for basic fault coverage.
AP3983CP7-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm), 7 Leads
- Packaging:
- Tube
- 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):
- 10 W
- Fault Protection:
- Over Temperature, Over Voltage, Short Circuit
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 7-PDIP
- Mounting Type:
- Through Hole
AP3983CP7-G1 FAQ
1.How can I place an order for AP3983CP7-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3983CP7-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 AP3983CP7-G1 reliable?
The price and inventory of AP3983CP7-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3983CP7-G1 is usually 5 days.
3.What payment methods are accepted for AP3983CP7-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3983CP7-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3983CP7-G1?
AP3983CP7-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3983CP7-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 AP3983CP7-G1?
For technical support, including AP3983CP7-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3983CP7-G1 requirements.
6.How does Aetrix verify that AP3983CP7-G1 is sourced from the original manufacturer or authorized distributors?
All AP3983CP7-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 AP3983CP7-G1 meets industry standards.
7.What is the process for return or replacement of AP3983CP7-G1?
All AP3983CP7-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3983CP7-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 AP3983CP7-G1 part is unused and in its original packaging.
Return procedure for AP3983CP7-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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