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PDF AP3765 Data sheet ( Hoja de datos )
| Número de pieza | AP3765 | |
| Descripción | LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP3765 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
General Description
Features
AP3765
The AP3765 is a high performance AC/DC power sup- · Primary Side Control for Rectangular Constant
ply controller for battery charger and adapter applica-
Current and Constant Voltage Output
tions. The device uses Pulse Frequency Modulation · Sub-microampere Start-up Current
(PFM) method to build discontinuous conduction
mode (DCM) flyback power supplies.
·
·
30mW No-load Input Power Feasible
Tight CV Regulation Performance
The AP3765 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 AP3765 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 AP3765 is available in SOT-23-6 package.
· Short Circuit Protection
· SOT-23-6 Package
Applications
· Adapters/Chargers for Cell/Cordless Phones,
PDAs, MP3 and Other Portable Apparatus
· LED Drivers
· Standby and Auxiliary Power Supplies
Sep. 2010 Rev. 1. 2
SOT-23-6
Figure 1. Package Type of AP3765
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3765
Electrical Characteristics
(VCC=15V, TA=25oC, unless otherwise specified.)
Parameter
Symbol
Conditions
UVLO SECTION
Start-up Threshold
VTH (ST)
Minimal Operating Voltage
VOPR(min)
STANDBY CURRENT SECTION
Start-up Current
IST
VCC = VTH (ST)-0.5V,
Before start-up
Operating Current
DRIVE OUTPUT SECTION
ICC(OPR) Static
Sink
OUT Maximum Current
Source
IOUT
CURRENT SENSE SECTION
Current Sense Threshold
VCS
Pre-Current Sense
VCS(PRE)
Leading Edge Blanking
Min Typ Max Unit
16 18.5 21
7.2 9 10.2
V
V
0.6 µA
200 320 µA
50
mA
24 30 36
455 510 545 mV
365 410 455 mV
750 ns
FEEDBACK INPUT SECTION
Feedback Pin Input Leakage
Current
IFB
VFB=4V
2.0 2.5 3.1 µA
Feedback Threshold
Over Voltage Protection
VFB
VFB(OVP)
3.89 3.95 4.01
6.4 8 9.6
V
V
Sep. 2010 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AP3765.PDF ] | |
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