NCR321UX Nexperia

NCR320U / NCR321U 250 mA LED driver in SOT457 Rev. 1 11 December 2018 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 an SOT457 (SC-74 TSOP6) plastic package. Table 1. Product overview Type number Package Nexperia JEITA NCR320U SOT457 SC-74 TSOP6 NCR321U SOT457 SC-74 TSOP6 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 750 mW Supply voltage up to 16 V Digital PWM input up to 10 kHz frequency for NCR321U 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 NCR320U / NCR321U 250 mA LED driver in SOT457 1.4. Quick reference data Table 2. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V enable voltage EN NCR320U - - 25 V NCR321U - - 4.5 V V output voltage - - 16 V out I stabilized output current out NCR320U V = 1.4 V 1 9 10 11 mA out V = 12 V EN NCR321U 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 6 5 4 REXT IOUT GND 1 VEN enable voltage 2 IOUT output current 3 IOUT output current 1 2 3 4 GND ground SC-74 TSOP6 5 IOUT output current (SOT457) VEN IOUT IOUT 6 REXT external resistor aaa-029361 3. Ordering information Table 4. Ordering information Type number Package Name Description Version NCR320U SC-74 TSOP6 plastic surface-mounted package 6 leads SOT457 NCR321U SC-74 TSOP6 plastic surface-mounted package 6 leads SOT457 4. Marking Table 5. Marking codes Type number Marking code NCR320U L4 NCR321U L5 NCR320U NCR321U All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2018. All rights reserved Product data sheet Rev. 1 11 December 2018 2 / 17