NCR321ZX Nexperia

NCR320Z / NCR321Z 250 mA LED driver in SOT223 Rev. 1 4 February 2019 Product data sheet 1. Product profile 1.1. General description LED driver consisting of a resistor-equipped NPN transistor with two diodes on one chip in a medium power SOT223 (SC-73) Surface-Mounted Device (SMD) plastic package. Table 1. Product overview Type number Package Nexperia JEITA NCR320Z SOT223 SC-73 NCR321Z SOT223 SC-73 1.2. Features and benefits Stabilized output current of 10 mA without external resistor Stabilized output current adjustable up to 250 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 16 V Digital PWM input up to 10 kHz frequency for NCR321Z 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 NCR320Z / NCR321Z 250 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 NCR320Z - - 25 V NCR321Z - - 4.5 V V output voltage - - 16 V out I stabilized output current out NCR320Z V = 1.4 V 1 9 10 11 mA out V = 12 V EN NCR321Z 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 number Package Name Description Version NCR320Z SC-73 plastic surface-mounted package with SOT223 increased heatsink 4 leads NCR321Z SC-73 plastic surface-mounted package with SOT223 increased heatsink 4 leads 4. Marking Table 5. Marking codes Type number Marking code NCR320Z CR320Z NCR321Z CR321Z NCR320Z NCR321Z 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