NCL30161MNTXG ON Semiconductor

NCL30161 Constant-Current Buck Regulator for Driving High Power LEDs The NCL30161 is a hysteretic stepdown, constantcurrent driver for high power LEDs. Ideal for industrial and general lighting www.onsemi.com applications utilizing minimal external components. The NCL30161 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 load transients and PWM dimming to LED arrays of varying number DFN10 and type. A dedicated PWM input (DIM/EN) enables a wide range of CASE 485C pulsed dimming, and a high switching frequency allows the use of smaller external components minimizing space and cost. Protection MARKING DIAGRAM features include resistorprogrammed constant LED current, shorted LED protection, under voltage and thermal shutdown. The NCL30161 is available in a DFN10 3 mm x 3 mm package. 30161 ALYW Features VIN Range 6.3 V to 40 V 30161 = Specific Device Code Short LED Shutdown Protection: (NCL30161 Latching) A = Assembly Location No Control Loop Compensation Required L = Wafer Lot Y = Year Adjustable LED Current W = Work Week Single Pin Brightness and Enable/Disable Control Using PWM = PbFree Package Supports AllCeramic Output Capacitors and Capacitorless Outputs (Note: Microdot may be in either location) Thermal Shutdown Protection Capable of 100% Duty Cycle Operation PIN CONNECTIONS This is a PbFree Device GATE TYPICAL Application CS 1 10 LED Driver NC 2 9 VIN Constant Current Source DIM/EN GND 3 8 General Illumination Industrial Lighting NC 4 7 NC ROT D1 VCC 6 5 VIN C IN L1 (Top View) LED LED ORDERING INFORMATION Device Package Shipping VIN GATE DIM/Enable NCL30161MNTXG DFN10 3000 / Tape & CS (PbFree) Reel ROT R R OT SENSE For information on tape and reel specifications, NCL30161 VCC including part orientation and tape sizes, please GND refer to our Tape and Reel Packaging Specifications C VCC Brochure, BRD8011/D. Figure 1. Typical Application Circuit Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: March, 2019 Rev. 1 NCL30161/DNCL30161 PIN FUNCTION DESCRIPTION Pin Pin Name Description Application Information 1 CS Current Sense feedback pin Set the current through the LED array by connecting a resistor from this pin to ground. 2, 4, 7 NC No Connect 3 GND Ground Pin Ground. Reference point for all voltages 5 VCC Output of Internal 5 V linear The VCC pin supplies the power to the internal circuitry. The VCC is the out- regulator put of a linear regulator which is powered from VIN. A 2 F ceramic capacitor is recommended for bypassing and should be placed as close as possible to the VCC and GND pins. Do not connect to an external load. 6 ROT Initial OffTime Setting Resistor ROT from this pin to VCC sets the initial offtime range for the hys- Resistor teretic controller. 8 DIM/EN PWM Dimming Control and Connect a logiclevel PWM signal to this pin to enable/disable the power ENABLE MOSFET and LED array 9 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 to high frequency noise, a 10 F ceramic capacitor is recommended to be placed as close as possible to VIN and power ground. 10 GATE Driver Output Connect to the gate of the external MOSFET. 11 FLAG Thermal flag. There is no electrical connection to the IC. Connect to ground plane. www.onsemi.com 2