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PDF BW7385A Data sheet ( Hoja de datos )
| Número de pieza | BW7385A | |
| Descripción | High Power Factor & Accuracy Constant Current LED Driver | |
| Fabricantes | Bruckewell | |
| Logotipo |  |
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Preliminary BW7385A
High Power Factor & Accuracy Constant Current LED Driver
Features
TM (Transition Mode) Fixed On -Time PFC
Control
Accuracy Constant Current
Low BOM Cost
Inductor Size Reduction
CT Pin Adjust Frequency Range for
Optimization
Over Voltage Protection (OVP)-Auto Recovery
LED Short Protection (SCP) -Auto Recovery
Over Load Protection (OLP) -Auto Recovery
SOT-26 Package
Compatible Inductance Ballast
Incompatible Electronic Ballast
Description
The BW7385A is a highly-integrated, low startup
current, TM (Transition Mode), fixed on- time PFC
control and PWM controller. These functions enable the
LED driver to easily meet the accuracy average LED
current and high power factor requirements. The
integrated functions also include the LED short
protection, over voltage protection, over load
protection. The COMP pin controls the duty by
connected an RC compensation network to ground
and forming the closed loop feedback control.
The BW7385A improves the performance and
reduces the cost of the LED driver. It is a 6-pin
SOT-26 package.
Application
GU10 /E14 LED Bulb
Others LED Lighting Applications
1
1 page  
Preliminary BW7385A
℃Electrical Characteristics (VCC = 15.0V & TA = +25 , unless otherwise specified.)
Parameter
Pin Min. Typ. Max.
SUPPLY VOLTAGE
Startup Current (VCC=UVLO on - 1V)
1 10 50
Operating Current (with 1nF load on OUT pin), Vcomp = 2.5V 1
2.5 3.2
Operating Current (with 1nF load on OUT pin), Protection
1
Tripped (OVP, SCP,)
1.6 2.5
UVLO(off)
1 5.5 6.5 7.5
UVLO(on)
1 14 15 16
OVP Level on VCC Pin
1 29.5 31.5 33.5
OVP De-Bounce Time
1 40
VOLTAGE FEEDBACK
Feedback Reference Voltage
6 0.195 0.200 0.205
Tran-Conductance
6 300
Output Sink Current
6 300
Output Source Current
6 60
CURRENT SENSING
Input Over Voltage Protection
5 1.8 2.0 2.2
Open Loop Voltage, CS Pin Open
55
Leading-Edge Blanking Time
5 450
Delay to Output
5 130 220
GATE DRIVER OUTPUT
Rising Time, Load Capacitance = 1000pF
3 280 500
Falling Time, Load Capacitance = 1000pF
3 80 150
VGATE-Clamp (VCC = 25V )
3 12.5 15
CT OUTPUT SECTION
CT Pin Current
4 160 180 200
Unit
uA
mA
mA
V
V
V
us
V
uS
uA
uA
V
V
nS
nS
nS
nS
V
uA
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BW7385A.PDF ] | |
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