Datasheet Texas Instruments LM3466TA/NOPB — 数据表

LM3466
www.ti.com SNOSB96F – JUNE 2011 – REVISED NOVEMBER 2013 Multi-String LED Current Balancer for Use with Constant-Current Power Supplies
Check for Samples: LM3466 FEATURES DESCRIPTION The LM3466 integrates a linear LED driver for lighting
systems which consist of multiple LED strings
powered by a constant current power supply. It
balances the current provided by the supply in a preset ratio for each active LED string, where an active
string is a fully turned on LED string, regardless of
the number of strings connected to the supply or the
forward voltage of each LED string. If any LED string
opens during operation, the LM3466 automatically
balances the supply current through all of the
remaining active LED strings. As a result, the overall
brightness of the lighting system is maintained even if
some LED strings open during operation. 1 2 Easy to Design for Lighting Systems
Consisting of Multiple LED Strings (Supports
Modular Design)
Automatically Balances the Current of Every
Active LED String, even the Forward Voltage
of Each String is Different
Easy to Pre-Set and Fine-Tune Current Ratio
Among LED Strings (e.g., color temperature
adjustment or CRI Enhancement)
В±1% Current Accuracy at Room Temperature …