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3706M-E1 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited

Part # 3706M-E1
Description  PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS
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Manufacturer  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Direct Link  http://www.bcdsemi.com
Logo BCDSEMI - BCD Semiconductor Manufacturing Limited

3706M-E1 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited

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PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS AP3706
Data Sheet
1
BCD Semiconductor Manufacturing Limited
Jul. 2008 Rev. 1.3
General Description
The AP3706 is a high performance AC/DC power sup-
ply controller for battery charger and adapter applica-
tions. The device uses Pulse Frequency Modulation
(PFM) method to build discontinuous conduction
mode (DCM) flyback power supplies.
The AP3706 provides constant voltage, constant cur-
rent (CV/CC) regulation without requiring an opto-
coupler and secondary control circuitry. It also elimi-
nates the need of loop compensation circuitry while
maintaining stability.
The AP3706 achieves excellent regulation and high
power efficiency, the no-load power consumption is
less than 200mW at 265VAC input.
The AP3706 is available in SOIC-8 and DIP-8 pack-
ages.
Features
·
Primary Side Control for Rectangular Constant
Current and Constant Voltage Output
·
Eliminates Opto-Coupler and Secondary CV/CC
Control Circuitry
·
Eliminates Control Loop Compensation Circuitry
·
Flyback Topology in DCM Operation
·
Random
Frequency
Modulation
to
Reduce
System EMI
·
Valley Turn on of External Power NPN Transistor
·
Built-in Soft Start
·
Open Circuit Protection
·
Over Voltage Protection
·
Short Circuit Protection
Applications
·
Adapters/Chargers
for
Cell/Cordless
Phones,
PDAs, MP3 and Other Portable Apparatus
·
Standby and Auxiliary Power Supplies
Figure 1. Package Types of AP3706
SOIC-8
DIP-8


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