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PDF AP1680 Data sheet ( Hoja de datos )
| Número de pieza | AP1680 | |
| 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 AP1680 (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
AP1680
The AP1680 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 AP1680 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 AP1680 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 AP1680 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
Apr. 2011 Rev. 1. 0
SOT-23-6
Figure 1. Package Type of AP1680
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP1680
Electrical Characteristics
(VCC=15V, TA=25oC, unless otherwise specified.)
Parameter
UVLO SECTION
Start-up Threshold
Symbol
VTH (ST)
Conditions
Min Typ Max Unit
16 18.5 21
V
Minimal Operating Voltage
STANDBY CURRENT SECTION
Start-up Current
VOPR(min)
7.2
IST
VCC=VTH (ST)-0.5V,
Before start-up
9 10.2 V
0.6 µA
Operating Current
DRIVE OUTPUT SECTION
ICC(OPR) Static
200 320 µA
OUT Maximum Current
Sink
Source
CURRENT SENSE SECTION
Current Sense Threshold
IOUT
VCS
50
mA
24 30 36
455 510 545 mV
Equivalent Current Sense Voltage Accuracy
Pre-Current Sense
Leading Edge Blanking
∆Vcs, eq
Vcs, eq
VCS(PRE)
Note 2
3%
365 410 455 mV
750 ns
FEEDBACK INPUT SECTION
Feedback Pin Input Leakage Current
Feedback Threshold
IFB VFB=4V
VFB
2.0 2.5 3.1
3.59 3.83 4.07
µA
V
Note
2:
The
output
current
is
given
by
IOUT=
Vcs, eq
Rcs
x
xNp
Ns
.
Apr. 2011 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AP1680.PDF ] | |
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