NCL30160 1.0A Constant-Current Buck Regulator for Driving High Power LEDs The NCL30160 is an NFET hysteretic stepdown, constantcurrent driver for high power LEDs. Ideal for industrial and general lighting www.onsemi.com applications utilizing minimal external components. The NCL30160 operates with an input voltage range from 6.3 V to 40 V. The hysteretic control gives good power supply rejection and fast response during 8 load transients and PWM dimming to LED arrays of varying number and type. A dedicated PWM input (DIM/EN) enables wide range of 1 pulsed dimming and a high switching frequency up to 1.4 MHz allows SOIC8 NB the use of smaller external components minimizing space and cost. CASE 751 Protection features include resistor programmed constant LED current, shorted LED protection, under voltage and thermal shutdown. The NCL30160 is available in a SOIC8 package. MARKING DIAGRAM 8 Features 30160 Integrated 1.0A MOSFET ALYWX VIN Range 6.3 V to 40 V 1 Short LED Shutdown Protection Up to 1.4 MHz Switching Frequency A = Assembly Location L = Wafer Lot No Control Loop Compensation Required Y = Year Adjustable LED Current W = Work Week = PbFree Package Single Pin Brightness and Enable/Disable Control Using PWM Supports AllCeramic Output Capacitors and Capacitorless Outputs Thermal Shutdown Protection PIN CONNECTIONS Capable of 100% Duty Cycle Operation CS LX This is a PbFree Device CS VIN GND DIM/ENABLE Typical Application VCC ROT LED Driver Constant Current Source General Illumination ORDERING INFORMATION Industrial Lighting Device Package Shipping NCL30160DR2G SOIC8 2500 / Tape & Reel (PbFree) For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Semiconductor Components Industries, LLC, 2012 1 Publication Order Number: April, 2019 Rev. 2 NCL30160/DNCL30160 D1 VIN C IN L1 LED LED VIN LX DIM/Enable CS ROT NCL30160 R R OT SENSE VCC GND C VCC Figure 1. Typical Application Circuit PIN FUNCTION DESCRIPTION Pin Pin Name Description Application Information 1, 2 CS Current Sense feedback pin Set the current through the LED array by connecting a resistor from this pin to ground. 3 GND Ground Pin Ground. Reference point for all voltages 4 VCC Output of Internal 5 V linear The VCC pin supplies the power to the internal circuitry. The VCC is the regulator output of a linear regulator which is powered from VIN. A 2 uF ceramic capacitor is recommended for bypassing and should be placed as close as possible to the VCC and AGND pins. Do not connect to an external load. 5 ROT OffTime Setting Resistor Resistor ROT from this pin to VCC sets the OffTime range for the hysteretic controller. 6 DIM/EN PWM Dimming Control & Connect a logiclevel PWM signal to this pin to enable/disable the power ENABLE MOSFET and LED array 7 VIN Input Voltage Pin Nominal operating input range is 6.3 V to 40 V. Input supply pin to the internal circuitry and the positive input to the current sense comparators. Due high frequency noise, a 10 F ceramic capacitor is recommended to be placed as close as possible to VIN and power ground. 8 LX Drain of Internal Power The LX pin connects to the inductor and provides the switching current MOSFET necessary to operate in hysteretic mode. www.onsemi.com 2