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AP3983C

更新时间： 2024-11-26 00:50:47
品牌 Logo 应用领域
美台 - DIODES /
页数 文件大小 规格书
13页 598K
描述
HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS

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AP3983C 数据手册

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AP3983B/C/D  
HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS  
Description  
Pin Assignments  
The AP3983B/C/D are series of high frequency power switcher for  
power supplies with better conversion efficiency, better voltage &  
current accuracy, and improved protection functions. Typical  
applications include charger, adapter for ADSL, home appliance  
power supply, LED lighting power supply and PC auxiliary power  
supplies. The AP3983B/C/D 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.  
(Top View)  
GND  
CPC  
FB  
1
2
3
4
7
6
D
D
VCC  
CS  
5
SO-7 For AP3983B/C  
(Top View)  
The AP3983B/C/D has good transient characteristics. Typically,  
minimal voltage of 4.3V at PCB side can be achieved for dynamic test  
of 5V application system.  
The AP3983B/C/D provides operating frequency dithering function to  
improve EMC performance of power supply. The AP3983B/C/D also  
has built-in fixed cable voltage drop compensation and adjustable line  
voltage compensation.  
1
2
7
CPC  
FB  
GND  
The AP3983B/C/D solution has fewer component number, smaller  
size, and lower total cost.  
6
5
D
D
3
4
VCC  
CS  
The AP3983B/C is packaged in SO-7. The AP3983C/D is packaged in  
PDIP-7.  
PDIP-7 For AP3983C/D  
Features  
Primary Side Control for Eliminating Opto-coupler  
Better Transient Characteristics  
Applications  
Built-in N Channel MOSFET with 650 BVDSS  
Low Start-up Current: 0.2A (Typ.)  
Adapters  
Set Top Boxes  
Auxiliary Supplies  
Appliances  
Internal Output Cable Voltage Drop Compensation  
Hiccup Function to Improve Short Circuit Protection  
Better Over Voltage Protection  
LED Driver  
Better Over Temperature Protection  
Low Total Cost Solution  
Output Power Range (Note 1):  
AP3983B for 6W Adapter  
AP3983C (SO-7) for 7.5W  
AP3983C (PDIP-7) for 10W Adapter  
AP3983D for 18W Adapter  
Totally Lead-Free & Fully RoHS Compliant (Notes 2 & 3)  
Halogen and Antimony Free. “Green” Device (Note 4)  
Notes:  
1. Typical continuous power in a non-ventilated enclosed adapter measured at +50°C ambient.  
2. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.  
3. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"  
and Lead-free.  
4. 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 13  
www.diodes.com  
July 2016  
© Diodes Incorporated  
AP3983B/C/D  
Document number: DS36784 Rev. 4 - 2  
1234567...13

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