Product Summary

The DD311 is a single-channel constant current LED driver, which incorporates current mirror and current switch, designed to drive power LEDs. It can provide a maximum sink current of 1A, ; adjustable by reference current input. The output current is 100 times the input current value set by an external resistor or bias voltage. The Maximum output voltage of 33V can provide more series power LEDs in a string. The output enable allows dimming control or switching power applications.

Parametrics

DD311 absolute maximum ratings: (1)Input Reference Current,IREF :10mA ; (2)Output Current , Iout :1.0 A ; (3)Output Voltage , Vout : -0.3 to 33 V; (4)Enable Voltage , VEN : -0.3 to 18 V ; (5)Output Enable Frequency , FEN :1MHz ; (6)GND Terminal Current , IGND : 1.01A ; (7)Power Dissipation , Pd : 4.2 (Ta=25°C) W ; (8)Thermal Resistance (Junction to Air) , Rth(j-a) 23.38°C/W ; (9)Thermal Resistance (Junction to Case) , Rth(j-c) 1.77°C/W ; (10)Operating Temperature, Top : -40 to 85°C; (11)Storage Temperature , Tstg : -55 to 150°C.

Features

DD311 features: (1)Maximum output current: 1A (determined by input reference current) ; (2)Minimum output voltage: 1V (Iout = 1A) ; (3)Maximum output voltage: 33V (output leakage current < 0.1uA) ; (4)Maximum output enable frequency: 1MHz ; (5)Excellent output current accuracy.

Diagrams

DD311 block diagram

DD312
DD312
Other

Data Sheet
Negotiable