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BW7383のメーカーはBruckewell Technologyです、この部品の機能は「6 Pin Non-isolation Buck current control IC」です。 |
部品番号 | BW7383 |
| |
部品説明 | 6 Pin Non-isolation Buck current control IC | ||
メーカ | Bruckewell Technology | ||
ロゴ | |||
このページの下部にプレビューとBW7383ダウンロード(pdfファイル)リンクがあります。 Total 8 pages
BW7383
6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting
FEATURES
Universal Input Voltage Range from 90VAC to
264VAC
Transition-mode PFC operating
Built-in Active Power Factor Correction
Technique
Constant Output Current Control LED driver
Good Line and Load Regulation
Open-LED Protection on DMG and VCC pin
Over-Voltage Protection on VCC pin
Short-LED Protection
Cycle by Cycle Over current Protection on CS
pin
Over-Temperature Protection
Gate Driving Voltage Clamping
SOT26 Package Available
DESCRIPTION
BW7383 is a non-isolation Buck type control IC
with active power factor correction function for LED
lighting application.
The IC achieves high power factor and high
efficiency by BCM mode. The line and load
regulation of LED current is about ±2.5% because
of particular control method.
BW7383 also provides gate driving voltage
clamping, VCC over voltage protection and system
output open/short circuit protection to increase IC
performance.
APPLICATIONS
LED lighting
Down light
Tube lamp
PAR lamp
Bulb
ORDER INFORMATION
BW 7383- KF R
BW
Circuit Type
Shipping:
R: Tape & Reel
KF: SOT-26
PIN CONFIGURATIONS (TOP VIEW)
SOT-26
1 COM DMG 6
2 GND VCC 5
3 CS
OUT 4
Rev 1.1 Jan. 2014
1
http://www.Datasheet4U.com
1 Page BW7383
6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting
ABSOLUTE MAXIMUM RATINGS (Note 1)
Parameter
Power supply pin
DMG voltage to GND
OUT voltage to GND
CS voltage to GND
COM voltage to GND
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 sec)
Power Dissipation @TA=25 °C
Thermal Resistance Junction to Ambient (Note 2)
Thermal Resistance Junction to Case
ESD Rating (Human body mode) (Note 3)
Symbol
VCC
VDMG
VOUT
VCS
VCOM
Tj
TSTG
TLEAD
PD
θJA
θJC
VESD
Range
40
-0.3 to 40
-0.3 to 40
-0.3 to 5.5
-0.3 to 5.5
-40 to +150
-65 to +150
260
0.3
220
106.6
2
Unit
V
V
V
V
V
°C
°C
°C
W
°C/W
°C/W
kV
RECOMMENDED OPERATING CONDITIONS (Note4)
Parameter
Symbol
Operation Conditions
Unit
Power supply pin
VCC 34.5 V
DMG voltage to GND
VDMG
-0.3 to 11.2
V
OUT voltage to GND
VOUT
-0.3 to 19
V
CS voltage to GND
VCS
-0.3 to 5
V
COM voltage to GND
VCOM
-0.3 to 5
V
Operating Junction Temperature Range
TJ
-40 to +125
°C
Operating Ambient Temperature Range
TOPA
-40 to +85
°C
Note 1: Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress
ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect
device reliability.
Note 2: Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test board in free air at
TA=25°C.
Note 3: Devices are ESD sensitive. Handing precaution recommended.
Note 4: The device is not guaranteed to function outside its operating conditions.
Rev 1.1 Jan. 2014
3
3Pages BW7383
6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting
APPLICATION INFORMATION
1. Function Description
The BW7383 is a constant current Buck
controller with PFC function for LED lighting
applications.
The controller is BCM operation with constant
on time based regulator design to achieve high
power factor performance.
The BW7383 is built-in functions of VCC over
voltage protection, open LED protection, short LED
protection, over temperature protection, primary
side current limit, and gate clamp within.
The BW7383 sense output current from CS pin
to get the output current information. By the system
close loop feedback. The avarge output current can
express as below.
IOUT = 0.2 / Rs
2. Pin Detail
2-1. COM
This is the output of the Gm amplifier. Connect
with a suitable RC network to ground.
2-2. GND
GND is the reference node of internal circuit.
2-3. CS
MOSFET current signal sensing for LED
constant current control and current limit setting
function
ICS(Limit) = 1.25
RS
2-4. OUT
Gate drive for external MOSFET switch and is
built-in Gate clamp function.
2-5. VCC
Power supply for the controller during normal
operation. The controller will start up when VCC
reaches 18.4V (typical) and will shut-down when
VCC voltage is below 9.8V (typical). A decoupling
capacitor should be connected between the VCC
and GND pin as close as possible.
The BW7383 perform VCC over voltage
protection though VCC pin. Once VCC pin exceed
in 32.8V, BW7383 turns off and latch out the
MOSFET switcher until VCC under VCC_OFF.
2-6. DMG
The DMG pin can sense output information to
depart from start up voltage(VO_STR) and protection
voltage(VOVPS). Besides, the Internal resistance of
DMG pin is 1.6Mohm.
When DMG sense voltage under VO_STR, the
circuit will work on short circuit protection,and the
system switching frequency FSTR=1/Tstr.
When DMG sense voltage over VOVPS, the
circuit will work on over voltage protection, it will
latch out off until VCC under VCC_OFF.
Rev 1.1 Jan. 2014
6
6 Page | |||
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