The IS32FL3237-TQLA3-TR from Lumissil Microsystems is a LED Driver IC with Input Voltage 2.7 to 5.5 V, Output Current 21.39 to 24.61 mA, Operating Temperature Range -40 to 150 Degree C. Tags: Surface Mount, PWM LED Driver. More details for IS32FL3237-TQLA3-TR can be seen below.