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REGULATION CONTROLLER. AP3766 Datasheet

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REGULATION CONTROLLER. AP3766 Datasheet






AP3766 CONTROLLER. Datasheet pdf. Equivalent




AP3766 CONTROLLER. Datasheet pdf. Equivalent





Part

AP3766

Description

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER



Feature


Preliminary Datasheet LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3 766 General Description The AP3766 is a high performance AC/DC power supply c ontroller for LED drivers, battery char ger and adapter applications. The devic e uses Pulse Frequency Modulation (PFM) method to build discontinuous conducti on mode (DCM) flyback power supplies. T he AP3766 provides.
Manufacture

BCD Semiconductor

Datasheet
Download AP3766 Datasheet


BCD Semiconductor AP3766

AP3766; accurate constant voltage, constant cur rent (CV/CC) regulation while removing the opto-coupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while ma intaining stability. The AP3766 achieve s excellent regulation and high average efficiency, yet meets the requirement for no-load consumption less than 30mW. The AP3766 is ava.


BCD Semiconductor AP3766

ilable in SOT-23-6 package. Features · · · · · · · · · · · · Prima ry Side Control for Rectangular Constan t Current and Constant Voltage Output S ub-microampere Start-up Current 30mW No -load Input Power Feasible Tight CC Reg ulation Performance Eliminates Opto-cou pler and Secondary CV/CC Control Circui try Eliminates Control Loop Compensatio n Circuitry Flyback Topology i.


BCD Semiconductor AP3766

n DCM Operation Random Frequency Modulat ion to Reduce System EMI Built-in Soft Start Open Feedback Protection Short Ci rcuit Protection SOT-23-6 Package Appl ications · · · LED Drivers Adapters/ Chargers for Cell/Cordless Phones, PDAs , MP3 and Other Portable Apparatus Stan dby and Auxiliary Power Supplies SOT-2 3-6 Figure 1. Package Type of AP3766 Aug. 2010 Rev. 1. 2 1.

Part

AP3766

Description

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER



Feature


Preliminary Datasheet LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3 766 General Description The AP3766 is a high performance AC/DC power supply c ontroller for LED drivers, battery char ger and adapter applications. The devic e uses Pulse Frequency Modulation (PFM) method to build discontinuous conducti on mode (DCM) flyback power supplies. T he AP3766 provides.
Manufacture

BCD Semiconductor

Datasheet
Download AP3766 Datasheet




 AP3766
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
General Description
Features
AP3766
The AP3766 is a high performance AC/DC power sup- · Primary Side Control for Rectangular Constant
ply controller for LED drivers, battery charger and
Current and Constant Voltage Output
adapter applications. The device uses Pulse Frequency · Sub-microampere Start-up Current
Modulation (PFM) method to build discontinuous con-
duction mode (DCM) flyback power supplies.
·
·
30mW No-load Input Power Feasible
Tight CC Regulation Performance
The AP3766 provides accurate constant voltage, con-
stant current (CV/CC) regulation while removing the
·
Eliminates Opto-coupler and Secondary CV/CC
Control Circuitry
opto-coupler and secondary control circuitry. It also · Eliminates Control Loop Compensation Circuitry
eliminates the need of loop compensation circuitry · Flyback Topology in DCM Operation
while maintaining stability. The AP3766 achieves · Random Frequency Modulation to Reduce
excellent regulation and high average efficiency, yet
System EMI
meets the requirement for no-load consumption less · Built-in Soft Start
than 30mW.
· Open Feedback Protection
The AP3766 is available in SOT-23-6 package.
· Short Circuit Protection
· SOT-23-6 Package
Applications
· LED Drivers
· Adapters/Chargers for Cell/Cordless Phones,
PDAs, MP3 and Other Portable Apparatus
· Standby and Auxiliary Power Supplies
Aug. 2010 Rev. 1. 2
SOT-23-6
Figure 1. Package Type of AP3766
BCD Semiconductor Manufacturing Limited
1




 AP3766
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
Pin Configuration
AP3766
K6 Package
(SOT-23-6)
Pin 1 Dot by Marking
OUT 1
GND 2
VCC 3
6 FB
5 GND
4 CS
Figure 2. Pin Configuration of AP3766 (Top View)
Pin Description
Pin Number
1
2, 5
3
4
6
Pin Name
OUT
GND
VCC
CS
FB
Function
This pin drives the base of external power NPN switch
Ground
Supply voltage
The primary current sense
The voltage feedback from the auxiliary winding
Aug. 2010 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2




 AP3766
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
Functional Block Diagram
AP3766
FB
6
0 .1 V
COMP
pfm
4.0V
EA
Tonsec
Detector
Tons
OCkP
VCC
3
Regulator
&
Bias
UVLO
Constant Voltage Control
CV_ ctr l
RQ
S
pfm Driver 1 OUT
CS 4
Peak Current Control & LEB
Tons
Constant Current Control
RQ
CC_ctrl
S
2, 5 GND
Figure 3. Functional Block Diagram of AP3766
Aug. 2010 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
3



Recommended third-party AP3766 Datasheet






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