NUD4001 Datasheet | onsemi

Features - Supplies Constant LED Current for Varying Input Voltages - External Resistor Allows Designer to Set Current - up to 500 m A - Offered in Surface Mount Package Technology (SO- 8) - NSV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC- Q101 Qualified and PPAP Capable - Pb- Free Package is Available Benefits - Maintains a Constant Light Output During Battery Drain - One Device can be used for Many Different LED Products - Reduces Board Space and ponent Count - Simplifies Circuit and System Designs Typical Applications - Portables: For Battery Back- up Applications, also Simple Ni- CAD Battery Charging - Industrial: Low Voltage Lighting Applications and Small Appliances - Automotive: Tail Lights, Directional Lights, Back- up Light, Dome Light PIN FUNCTION DESCRIPTION Pin Symbol Description Vin Positive input voltage to the device Boost This pin may be used to drive an external transistor as described in the App Note AND8198/D. Rext An external resistor between Rext and Vin pins sets different current levels for different application needs 4 5, 6, 7, 8 GND Iout Ground The LEDs are connected from these pins to ground 8 1 SO- 8 CASE 751 STYLE 25 MARKING DIAGRAM 8 4001 AYWW G 4001 = Specific Device Code A = Assembly Location Y = Year WW = Work Week G = Pb- Free Device PIN CONFIGURATION AND SCHEMATIC Vin 1 Boost 2 Rext 3 GND...