NJU6080 CONSTANT CURRENT LED DRIVER with PWM CONTROL PACKAGE OUTLINE GENERAL DESCRIPTION The NJU6080 is a constant current LED driver with PWM control. NJU6080 can reduce board density compared with the case composed discrete because the constant current value can be set with one resistance. It can contribute to the reliability improvement of the system because it has an over current protection circuit and thermal shutdown circuit. NJU6080F1 The NJU6080 is suited for a LCD back light and toys, etc. FEATURES Supply Voltage Range : 2.5V ~ 5.5V LED Output Current : 100mA ( max. ) Output Current Accuracy : 1.8% Operating Current : 150A ( typ. ) One white LED can be lit. External Parts : Current limitation resistance Internal Thermal Overload Protection Internal Over Current Protection CMOS Technology Package Outline : SOT-23-6 BLOCK DIAGRAM V DD NJU6080 LED VREF ( 0.2V ) R S Current Limit / Control Thermal Shut Down Logic GND EN PWM PIN CONFIGRATION 65 4 1. PWM 2. GND 3. R S NJU6080 4. LED 5. EN 6. V DD 12 3 Ver.2010-06-25 - 1 - NJU6080 ABSOLUTE MAXIMUM RATINGS ( T = 25C ) a PARAMETER SYMBOL RATINGS UNIT Supply Voltage V - 0.3 ~ + 7.0 V DD Output Voltage V - 0.3 ~ + 7.0 V LED Output Current I 200 mA LED EN Pin Voltage V + 7.0 ( *1 ) V EN PWM Pin Voltage V + 7.0 ( *1 ) V PWM Power Dissipation P 400 ( *2 ) MW D Operating Temperature T - 40 ~ + 85 C opr Storage Temperature T - 40 ~ + 125 C stg (*1) : When input voltage is less than +7V, the absolute maximum control voltage is equal to the input voltage. (*2) : Mounted on glass epoxy board ( 76.2 114.3 1.6mm: 2Layers FR-4 ) RECOMMENDED OPERATING CONDITION ( T = 25C ) a PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNIT Supply Voltage V 2.5 - 5.5 V DD Output Voltage V - - 5.5 V LED ELECTRICAL CHARACTERISTICS ( V = 3.0V, V = 0.5V, R = 10, V = V = V , Ta = 25C ) DD LED S EN PWM DD PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNIT Quiescent Current I - 150 260 A DD Quiescent Current at OFF I V = GND - - 0.1 A DD OFF EN Output Current Accuracy I - 1.8 - + 1.8 % LED Output Pin Voltage 1 V I = 20mA - 0.3 0.4 V LED1 LED Output Pin Voltage 2 V I = 100mA - 0.4 0.5 V LED2 LED Output Pin Leak Current 1 I V = GND, V = V = 5.5V - - 0.1 A LEAK1 EN DD LED Output Pin Leak Current 2 I V = GND, V = V = 5.5V - - 0.1 A LEAK2 PWM DD LED EN Pin ON Voltage V I = OFF ON 1.6 - V V EN ON LED DD EN Pin OFF Voltage V I = ON OFF 0 - 0.3 V EN OFF LED PWM Pin ON Voltage V I = OFF ON 0.7V - V V PWM ON LED DD DD PWM Pin OFF Voltage V I = ON OFF 0 - 0.3V V PWM OFF LED DD EN Pin Input Current I - - 0.1 A EN PWM Pin Input Current I - - 0.1 A PWM R Pin Leak Current I V = GND, V = V = 3V - - 0.1 A S LEAK RS EN RS LED PWM Pin ON Delay Time t V = L H - 2.5 - s PWM ON PWM PWM Pin OFF Delay Time t V = H L - 0.1 - s PWM OFF PWM Maximum Output Current I R = 0 100 200 - mA LED MAX S Ver.2010-06-25 - 2 -