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PDF AP1681 Data sheet ( Hoja de datos )
| Número de pieza | AP1681 | |
| Descripción | Off-line Primary Side Regulation Controller | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver AP1681
General Description
The AP1681 is a powerful high performance AC/DC
power supply controller for dimmable LED lighting
applications. The device uses Pulse Frequency
Modulation (PFM) technology to regulate output
current according to the wall dimmer conduct angle.
The AP1681 achieves wide dimming range without
visible flicker and is compatible with diverse
dimmers.
The AP1681 features low start-up current, low
operation current and high efficiency. It also has rich
protection functions including over voltage, short
circuit, over current and over temperature protections.
The AP1681 is available in SOIC-8 package.
Features
• Primary Side Control for Output Current
Regulation Without Opto-coupler and Secondary
CV/CC Control Circuitry
• Adjustable Full Brightness and Full Dimming
Setting
• Wide Dimming Range From 100% to 1%, Down
to Full Darkness
• Adjustable Dimming Curve for Human Eye
Sensitivity
• No Visible Flicker
• Connectivity with Analog / Digital / Hybrid
Dimming Mode
• Built-in Acceleration Start
• Adjustable Soft-start Timing
• CV Open-load Regulation and Reload Detection
• Over Voltage and Short Circuit Protection
• Over Temperature Protection
• Over Current Protection
• Maximum Switch On-time Protection
Applications
• Dimmable LED Driver Suit for Leading-edge
Dimmer, Trailing-edge Dimmer, R Type, R-C
Type or R-L Type Dimmer
Jul. 2011 Rev. 1. 2
SOIC-8
Figure 1. Package Type of AP1681
BCD Semiconductor Manufacturing Limited
1
Free Datasheet http://www.datasheet4u.com/
1 page  
Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver AP1681
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage
Driver Output Current
Voltage at RD, RI, DIM, CS
FB Input Voltage
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
Power Dissipation at TA=50°C
Thermal Resistance
(Junction-to-Ambient)
ESD (Machine Model)
ESD (Human Body Model)
Symbol
VCC
IOUT
VRD, VRI,
VDIM, VCS
VFB
TJ
TSTG
TLEAD
PD
θJA
Value
-0.3 to 30
±300
-0.3 to 7
-40 to 10
150
-65 to 150
300
0.65
150
200
4000
Unit
V
mA
V
V
ºC
ºC
ºC
W
°C/W
V
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Power Supply Voltage
Ambient Temperature
Symbol
VCC
TA
Min
10.8
-40
Max
21.5
105
Unit
V
ºC
Jul. 2011 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver AP1681
Typical Application
120Vac
60Hz Dimmer
~+
47nF ~
22nF
EE16
L=4.5mH
1A/600V
VREC
470k
560k
3.3k
EE16
L=1.43mH 115T
47k
11T
GND
ZCD
MULT
GD
47
CS
1nF
VCC COMP INV AP1661
560k
3N60
2R
0.47 F
BAV20
330nF 680k 680k 680k
16k
VBUS
100pF
630V
+ 6.8 F
350V
AP1681 LED Application:
Dimmable LED Driver
Input: 120Vac/60Hz
18W Power
Output: 8 LEDs, 26VLOAD
5.0mA to 550mA
32 VOPEN
220k
330k 330k
BAV20
47k
14T
φ=0.3
SR 220 F
3A/150V 35V
VOUT
2.2nF
630V
68k
95T
0.16×3
19T
φ=0.4
TIW
+
27k
270k
0.47 F
10k
VCC
100k
1 F 16k
DIM
0.47 F
RD
RI
51k 100k
FB
OUT
CS
GND
AP1681
100
3.0k
FR105
EF20
L=2.54mH
4N60
Y2
1.5nF 3kV
1.3R
Figure 17. Typical Application of AP1681
Jul. 2011 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AP1681.PDF ] | |
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