LED Driver. BP3122 Datasheet

BP3122 Driver. Datasheet pdf. Equivalent


BPS BP3122
BP3122
High Precision PSR Constant Current LED Driver
Description
The BP3122 is a high precision primary-side feedback
and regulation controller for LED lighting, it operates
in constant current control mode and is designed to
work in inductor current discontinuous conduction
mode and especially suitable for flyback convertor
under universal input. The output power of system is
recommended to less than 5W.
The BP3122 integrates 650V power MOSFET. Since
adopting primary sense and feedback control
technology, the secondary sense and feedback circuit
is eliminated. The loop compensation components are
also removed while maintaining stability overall
operating conditions. It uses patent pending source
driver architecture and demagnetization sensing
technology, the operating current is very low, and it
doesn’t need the auxiliary winding for sensing the
output current and supplying the chip. The low
component counts and small system size are realized.
Since using the proprietary high accurate current sense
method, the BP3122 realizes ±5% accuracy of LED
current along with excellent line and load regulation.
The BP3122 offers rich protection functions including
LED open/short circuit protection, CS resistor short
circuit protection, over-temperature protection, VCC
under voltage protection.
Typical Application
Features
Built-in 650V Power MOSFET
Constant current control without secondary sense
and feedback circuit.
No Auxiliary winding for sensing and supplying
Ultra low operating current to improve efficiency
Universal input voltage
±5% LED current accuracy
LED short and open circuit protection
CS resistor short circuit protection
VCC under-voltage protection
Over temperature protection
Available in SOP-8 package
Applications
GU10/E27 LED bulb, spot light
Other LED lighting
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NP NS
AC
BP3122
4 OUT
3 VCC
1 CS
2 GND
NC 8
NC 7
DRAIN 6
DRAIN 5
BP3122_DS_Rev.1.1
Figure 1. Typical application circuit for BP3122
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BP3122 Datasheet
Recommendation BP3122 Datasheet
Part BP3122
Description High Precision PSR Constant Current LED Driver
Feature BP3122; BP3122 High Precision PSR Constant Current LED Driver Description The BP3122 is a high precision pri.
Manufacture BPS
Datasheet
Download BP3122 Datasheet




BPS BP3122
BP3122
High Precision PSR Constant Current LED Driver
Ordering Information
Part Number
Package
BP3122
SOP8
Operating
Temperature
-40to 105
Package Method
Tape
2,500 Piece/Roll
Marking
BP3122
XXXXXY
WXYY
Pin Configuration and Marking Information
CS
GND
VCC
OUT
NC
NC
DRAIN
DRAIN
XXXXXY: Lot Code
W: Sign
X: Year
YY: Week
Pin Definition
Pin No.
Name
1 CS
2 GND
3 VCC
4 OUT
5,6 DRAIN
7,8 NC
Figure 2. Pin configuration
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Description
Current sense. This pin connects a current sense resistor to GND to detect
the primary current of transformer.
Ground
Power supply
Internal high voltage MOSFET Source
Internal high voltage MOSFET Drain
No connection, must be floated
BP3122_DS_Rev.1.1
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BPS BP3122
BP3122
High Precision PSR Constant Current LED Driver
Absolute Maximum Ratings (note1)
Symbol
Parameters
Range
Units
ICC_max VCC pin maximum sink current
5 mA
DRAIN Internal HV MOSFET drain voltage
-0.3~650
V
CS Current sense pin input voltage
-0.3~6
V
OUT Internal HV MOSFET Source voltage
-0.3~18
V
PDMAX
θJA
TJ
TSTG
Power dissipation (note2)
Thermal resistance (Junction to Ambient)
Operating junction temperature
Storage temperature range
0.45
145
-40 to 150
-55 to 150
W
/W
ESD (note3)
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
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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
POUT1
POUT2
FOP
Parameter
Output power (input voltage 230V±15%)
Output power (input voltage 85V265V)
System operating frequency
Range
<6
<5
65~70
Unit
W
W
KHz
BP3122_DS_Rev.1.1
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