AP3987CT Series

NRND = Not Recommended for New Design

Catalog

NRND = Not Recommended for New Design

Part	Topology	Mounting Type	Voltage - Supply (Vcc/Vdd)	Output Isolation	Voltage - Breakdown	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Fault Protection	Internal Switch(s)	Package / Case [custom]	Package / Case	Package / Case [custom]	Package / Case
Diodes Inc AP3987CTS7-13	Flyback Secondary Side SR	Surface Mount	25 V	Isolated	650 V	85 °C	-40 °C	7-SO	Current Limiting Over Temperature Over Voltage Short Circuit		7	8-SOIC	3.9 mm	0.154 in

Catalog

NRND = Not Recommended for New Design

Key Features

• Primary-Side Control for Eliminating Opto-Coupler

• 10mW No-Load Input Power

• Built-In 650V High Performance MOSFET

• Flyback Topology in DCM Operation

• Built-In 0.35V Cable Compensation for CV

• Multiple PWM/PFM Control Mode to Improve Audio Noise and Efficiency

• VCS Jitter to Reduce System EMI

• Valley-On for the Higher Efficiency and Better EMI

• Multiple Protections:

• Over Voltage Protection (OVP)

• Output Short Circuit Protection (SCP)

• Transformer Saturation Protection (TSP) via Primary Peak Current Limitation

• Internal and External Over Temperature Protection (OTP)

• Matching AP4341 with Schottky or APR3415CT Series Synchronous Rectifier Solution

• SO-7 Package

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. "Green" Device (Note 3)

Description

The AP3987CT is a high performance AC/DC power switcher for battery charger and adapter applications with a built-in high performance controller and a built-in 650V high performance MOSFET. It can meet less than 10mW standby power for "Super Star" charger criteria. The device uses Pulse Frequency Modulation (PFM) method to build Discontinuous Conduction Mode (DCM) Flyback power supplies.