BP2833A Datasheet PDF - BPS

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BP2833A
BPS

Part Number BP2833A
Description Non-isolated Buck Offline LED Driver
Page 8 Pages


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晶丰明源半导体
BP2833A
Non-isolated Buck Offline LED Driver
Description
The BP2833A is a high precision buck constant
current LED driver. The device operates in critical
conduction mode and is suitable for 85Vac~265Vac
universal input offline LED lighting.
The BP2833A integrates a 500V power MOSFET.
With patent pending MOSFET driving technique, the
operating current of the IC is very low. So it doesn’t
need the auxiliary winding for supplying the chip. It
can achieve excellent constant current performance
with very few external components, so the system
cost and size are minimized.
The BP2833A utilizes patent pending current control
method. It can achieve precise output current and
excellent line regulation. The driver operates in
critical conduction mode, the output current does not
change with the inductance and LED output voltage.
The BP2833A offers rich protection functions to
improve the system reliability, including LED open
circuit protection, LED short circuit protection, VCC
under voltage protection, CS resistor short circuit
protection and thermal regulation function.
Features
Critical Conduction Mode Operation
Internal 500V Power MOSFET
No Auxiliary Winding
Ultra Low Operating Current
±5% LED Output Current Accuracy
LED Open Protection
LED Short Protection
Current Sensing Resistor Short Protection
VCC Under Voltage Protection
Thermal Regulation Function
Available in SOP-8 Package
Applications
LED Candle Light
LED Bulb
Other LED Lighting
Typical Application
AC BP2833A
4 VCC DRAIN 5
2 ROVP DRAIN 6
3 NC
CS 7
1 GND
CS 8
BP2833A_EN _DS_Rev.1.0
Figure 1. Typical application circuit for BP2833A
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晶丰明源半导体
Ordering Information
Part Number
Package
BP2833A
SOP8
BP2833A
Non-isolated Buck Offline LED Driver
Operating
Temperature
-40 to 105
Package Method
Tape
2,500 Piece/Roll
Marking
BP2833A
XXXXXY
WWXYY
Pin Configuration and Marking Information
GND
ROVP
NC
VCC
CS
CS
DRAIN
DRAIN
XXXXXY: Lot Code
WW: Sign
X: Year
YY: Week
Pin Definition
Pin No.
1
2
3
4
5,6
Name
GND
ROVP
NC
VCC
DRAIN
7,8 CS
Figure 2. Pin configuration
Description
Ground
Over Voltage Protection Setting Pin. Connect a resistor to GND
No Connection. Should be connected to GND(Pin1)
Power Supply Pin
Internal HV Power MOSFET Drain
Current Sense Pin. Connect a sense resistor between this pin and GND
pin.
BP2833A_EN _DS_Rev.1.0
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晶丰明源半导体
BP2833A
Non-isolated Buck Offline LED Driver
Absolute Maximum Ratings (note1)
Symbol
Parameters
Range
Units
ICC_MAX
DRAIN
VCC pin maximum sink current
Internal HV MOSFET drain voltage
5
-0.3~500
mA
V
CS Current sense pin input voltage
-0.3~6
V
OUT Internal HV MOSFET source voltage
-0.3~25
V
ROVP Over-voltage setting pin voltage
-0.3~6
V
PDMAX
θJA
TJ
TSTG
Power dissipation (note 2)
Thermal resistance (Junction to Ambient)
Operating junction temperature
Storage temperature range
0.45
145
-40 to 150
-55 to 150
W
/W
ESD (note 3)
2 KV
Note 1: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. Under “recommended operating
conditions” the device operation is assured, but some particular parameter may not be achieved. The electrical characteristics table defines the operation
range of the device, the electrical characteristics is assured on DC and AC voltage by test program. For the parameters without minimum and maximum
value in the EC table, the typical value defines the operation range, the accuracy is not guaranteed by spec.
Note 2: The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature (TA). The maximum power
dissipation is the lower one between PDMAX = (TJMAX - TA)/ θJA and the number listed in the maximum table.
Note 3: Human Body mode, 100pF capacitor discharge on 1.5KΩ resistor
Recommended Operation Conditions
Symbol
ILED1
ILED2
VLED min
Parameter
Output LED current @ Vout=72V
(Input voltage 176V265V)
Output LED current @ Vout=36V
(Input voltage 176V265V)
Minimum LED Loading Voltage
Range
280
350
>15
Unit
mA
mA
V
BP2833A_EN _DS_Rev.1.0
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晶丰明源半导体
BP2833A
Non-isolated Buck Offline LED Driver
Electrical Characteristics (Notes 4, 5) (Unless otherwise specified, VCC=15V and TA =25 )
Symbol
Parameter
Conditions
Min Typ Max Units
Supply Voltage Section
VCC_CLAMP
VCC Clamp Voltage
VCC_ON
VCC Turn On Threshold
VCC_UVLO
VCC Turn off Threshold
IST VCC Startup Current
IOP VCC Operating Current
Current Sense Section
1mA
VCC Rising
VCC Falling
VCC= VCC-ON - 1V
FOP=70KHz
16.8 V
13.8 V
9V
120 180 uA
100 150 uA
VCS_TH
Threshold Voltage for
Peak Current Limit
388 400 412 mV
VCS_SHORT
Threshold Voltage for
Peak Current Limit When
Output Short
Output Short
200 mV
Leading Edge Blanking
TLEB
Time for Current Sense
350 ns
TDELAY
Switch Off Delay Time
Internal Time Control Section
200 ns
TOFF_MIN
TOFF_MAX
TON_MAX
VROVP
Minimum OFF Time
Maximum OFF Time
Maximum On Time
ROVP Pin Voltage
4.5 us
240 us
40 us
0.5 V
MOSFET Section
RDS_ON
Static Drain-source
On-resistance
VGS=15V/IDS=0.4A
5
Ω
BVDSS
Drain-Source Breakdown
Voltage
VGS=0V/IDS=250uA 500
V
Power MOSFET Drain
IDSS
Leakage Current
VGS=0V/VDS=500V
1 uA
Thermal Regulation Section
TREG
Thermal Regulation
Temperature
150
Note 4: production testing of the chip is performed at 25°C.
Note 5: the maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed by design, characterization and statistical
analysis
BP2833A_EN _DS_Rev.1.0
www.bpsemi.com
BPS Confidential Customer Use Only
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