BP3125
High Precision PSR Constant Current LED Driver
Ordering Information
Part Number
Package
BP3125
DIP8
Operating
Temperature
-40℃ to 105℃
Package Method
Tube
50 Piece/Tube
Marking
BP3125
XXXXXY
WWXYY
Pin Configuration and Marking Information
GND
FB
VCC
CS
NC
NC
DRAIN
DRAIN
XXXXXY: lot code
WW: Sign
X: Year
YY:Week
Pin Definition
Pin No.
1
Name
GND
2
FB
3
VCC
4
CS
5,6
DRAIN
7,8
NC
Figure 2. Pin configuration
Description
Ground
Feedback. This pin detects the output information from auxiliary
winding.
Power supply
Current sense. This pin connects a current sense resistor to GND to detect
the primary current of transformer.
Internal high voltage MOSFET drain.
No connection, must be floated
BP3125_EN_DS_Rev.1.0
www.bpsemi.com
2
Bright Power Semiconductor Co. Confidential – Customer Use Only