NCR421ZX Nexperia

NCR420Z / NCR421Z 150 mA LED driver in SOT223 Rev. 1 4 February 2019 Product data sheet 1. Product profile 1.1. General description LED driver consisting of resistor-equipped NPN transistor with two diodes on one chip in a medium power SOT223 (SC73) plastic package. Table 1. Product overview Type number Package Nexperia JEITA NCR420Z SOT223 SC-73 NCR421Z SOT223 SC-73 1.2. Features and benefits Stabilized output current of 10 mA without external resistor Stabilized output current adjustable up to 150 mA when an external resistor is used High current accuracy at supply voltage variation Low voltage overhead of 1.4 V Reduces component count and board space High power dissipation of 1250 mW Supply voltage up to 40 V Digital PWM input up to 10 kHz frequency for NCR421Z AEC-Q101 qualified 1.3. Applications Constant current LED driver Generic constant current source Automotive applications (for example: interior lighting, dash board, instrumentation, number plate light) Increase stabilized output current by paralleling driversNexperia NCR420Z / NCR421Z 150 mA LED driver in SOT223 1.4. Quick reference data Table 2. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V enable voltage EN NCR420Z - - 40 V NCR421Z - - 4.5 V V output voltage - - 40 V out I stabilized output current out NCR420Z V = 1.4 V 1 9 10 11 mA out V = 24 V EN NCR421Z V = 1.4 V 1 9 10 11 mA out V = 3.3 V EN 1 Pulse test: t 300 s 0.02 p 2. Pinning information Table 3. Pinning Pin Symbol Description Simplified outline Symbol IOUT 1 VEN enable voltage 4 2 REXT external resistor 3 GND ground 1 2 3 4 IOUT output current VEN REXT GND aaa-029430 3. Ordering information Table 4. Ordering information Type Package number Name Description Version NCR420Z SC-73 plastic surface-mounted package with increased SOT223 heatsink 4 leads NCR421Z SC-73 plastic surface-mounted package with increased SOT223 heatsink 4 leads 4. Marking Table 5. Marking codes Type number Marking code NCR420Z CR420Z NCR421Z CR421Z NCR420Z NCR421Z All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2019. All rights reserved Product data sheet Rev. 1 4 February 2019 2 / 18