Datasheet > AP3981D2

AP3981D2

更新时间： 2024-11-26 14:53:39

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
16页	378K
描述
Primary Side Regulated power switcher

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中文翻译

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AP3981D2 数据手册

AP3981D2

PRIMARY SIDE REGULATED POWER SWITCHER

Description

Pin Assignments

(Top View)

The AP3981D2 is a high-performance power switcher integrated with

primary-side regulation controller and an N-channel power

MOSFET. It can be used for battery charger and adaptor applications.

Accurate constant voltage (CV) and constant current (CC) can be

achieved without an optocoupler and secondary control circuitry.

GND

DRAIN

7 DRAIN

The AP3981D2 operates in pulse frequency modulation (PFM) mode

and peak current amplitude modulation (AM) mode to form a fine-tune

frequency curve within the whole power range. Therefore, AP3981D2

can achieve high-average efficiency and improve audible noise.

VCC

DRAIN

SOURCE

The AP3981D2 provides comprehensive protections without

additional circuitry. It contains V_CCovervoltage protection, output

overvoltage protection, output undervoltage protection, output short-

circuit protection, cycle-by-cycle current limit, open-loop protection,

and internal OTP, etc.

SO-8

The AP3981D2 is available in SO-8.

Features

Applications

•

Primary Side Control for Eliminating Optocoupler

Built-In 650V Power MOSFET of AP3981D2

75mW No-Load Input Power

•

Routers

Set-Top Box (STB) Power Supply

Network Adaptors

Flyback Topology in DCM Operation

External Adjustable Line Compensation for CC

Fixed Internal Cable Compensation

Multiple Segment AM/PFM Control Mode to Improve Audio

Noise and Efficiency

•

Frequency Jitter to Improve System EMI

Capacitive Load Start-Up Capability

Valley-On for the Higher Efficiency and Better EMI Behavior

Multiple Protections:

•

Secondary-Side Overvoltage Protection (SOVP)

Secondary-Side Undervoltage Protection (SUVP)

Output Short-Circuit Protection (SCP)

•

Transformer Saturation Protection (TSP) via Primary Peak

Current Limitation

•

Internal Overtemperature Protection (OTP)

•

SO-8 Package

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

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

1 of 16

www.diodes.com

AP3981D2

Document number: DS41421 Rev. 2 - 2

May 2019

12 3 4 5 6 7...16

中文翻译

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与AP3981D2相关器件

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AP3983B	DIODES	获取价格	HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
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AP3983CP7-G1	DIODES	获取价格	HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
AP3983D	DIODES	获取价格	HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
AP3983DP7-G1	DIODES	获取价格	HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS
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