NCV30161 Constant-Current Buck Regulator for Driving High Power LEDs The NCV30161 is a hysteretic stepdown, constantcurrent driver for high power LEDs. Ideal for industrial and automotive applications www.onsemi.com utilizing minimal external components. The NCV30161 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 and type. A dedicated PWM input (DIM/EN) enables a wide range of pulsed dimming, and a high switching frequency allows the use of smaller DFNW10 CASE 507AE external components minimizing space and cost. Protection features include resistorprogrammed constant LED current, shorted LED protection, undervoltage and thermal shutdown. The NCV30161 is MARKING DIAGRAM available in a DFN10 3 mm x 3 mm package with wettable flanks. NCV 30161 Features ALYW VIN Range 6.3 V to 40 V Short LED Shutdown Protection: (NCV30161 Latching) NCV30161 = Specific Device Code No Control Loop Compensation Required A = Assembly Location Adjustable LED Current L = Wafer Lot Single Pin Brightness and Enable/Disable Control Using PWM Y = Year W = Work Week Supports AllCeramic Output Capacitors and Capacitorless Outputs = PbFree Package Thermal Shutdown Protection Capable of 100% Duty Cycle Operation Thermally Enhanced DFN10 with Wettable Flanks PIN CONNECTIONS AECQ100 Qualified and PPAP Capable Specified from 40C to +125C GATE CS 1 10 This is a PbFree Device NC 2 9 VIN Typical Applications GND 8 DIM/EN 3 LED Driver Constant Current Source NC 4 7 NC Automotive Lighting ROT VCC 5 6 Industrial Lighting D1 VIN (Top View) C IN L1 ORDERING INFORMATION LED LED Device Package Shipping NCV30161MNWTXG DFNW10 3000 / Tape & VIN GATE (PbFree) Reel DIM/Enable For information on tape and reel specifications, CS ROT including part orientation and tape sizes, please R OT R SENSE refer to our Tape and Reel Packaging Specifications NCV30161 VCC Brochure, BRD8011/D. GND C VCC Figure 1. Typical Application Circuit Semiconductor Components Industries, LLC, 2018 1 Publication Order Number: June, 2019 Rev. 1 NCV30161/DNCV30161 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