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AP3983E (NRND)

NRND = Not Recommended for New Design

High Frequency Primary Side Power Switcher For Off-Line SMPS

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Description

The AP3983E is high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions. Typical applications include adapter for ADSL, home appliance power supply, LED lighting power supply and PC auxiliary power supplies. The AP3983E with built in MOSFET, regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system output current.

The AP3983E provides operating frequency dithering function to improve EMC performance of power supply. The AP3983E also has built-in fixed cable voltage drop compensation and adjustable line voltage compensation.

The AP3983E solution has fewer component number, smaller size, and lower total cost.

The AP3983E is packaged in PDIP-7.

Feature(s)

  • Primary Side Control for Eliminating Opto-coupler
  • Valley Switching Turn on for Higher Efficiency and Better EMI Performance
  • Better Transient Characteristics
  • Built-in N Channel MOSFET with 700 BVDSS
  • Low Start-up Current: 0.2µA (Typ.)
  • Internal Output Cable Voltage Drop Compensation
  • Hiccup Function to Improve Short Circuit Protection
  • Better Over Voltage Protection
  • Better Over Temperature Protection
  • Low Total Cost Solution
  • Output Power Range
  • AP3983E for 20W Adapter and 25W in Open Frame Design

Application(s)

  • Adapters
  • Set Top Boxes
  • Auxiliary Supplies
  • Appliances
  • LED Driver

Product Specifications

Product Parameters

CableCompensation 8%
Collector DC Current (A) 5
OperatingCurrent (µA) 650
Release Date 201606
StandbyPower (Max) (mW) 75
StartupCurrent (µA) 0.6
Switch MOS
UVLOThresholdon/off (V) 15.5/6.8
BVDSS (Min) (V) 700

Related Content

Packages

Applications

Technical Documents

Evaluation Board User Guides

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2642 2023-09-05 2024-03-05 Device End of Life (EOL)