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NCR321U ECAD models PCB Symbol, Footprint & ECAD Model

250 mA LED driver in SOT457

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

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NCR321U NCR321UX 934070295115 SOT457 Order product

Features

  • 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

Target applications

  • Constant LED driver
  • Generic constant current source
  • Automotive applications (for example: interior lighting, dash board, instrumentation, number plate light)
  • Increase stabilized output current by paralleling drivers

Parametrics

Type numberPackage versionPackage nameSize (mm)
NCR321USOT457SC-74; TSOP62.9 x 1.5 x 1

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
NCR321UNCR321UX
( 9340 702 95115 )
ActiveStandard Marking
SC-74; TSOP6
(SOT457)
SOT457Reel 7" Q1/T1

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
NCR321UNCR321UXNCR321U95.00.442.27E911
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
NCR320U_NCR321U250 mA LED driver in SOT457Data sheet2018-12-11
Nexperia_document_factsheet_LED_Driver_2019Constant current LED DriversLeaflet2019-09-02
Nexperia_Document_Leaflet_LEDDriver_CHN_2019Nexperia_Document_Leaflet_LEDDriver_CHN_2019Leaflet2019-10-17
NCR321U_Nexperia_Product_QualityNCR321U Nexperia Product QualityQuality document2019-05-20
NCR321UNCR321U SPICE modelSPICE model2019-11-21
SOT457_115TSOP6; Tape reel SMD; standard product orientation 12NC ending 115Packing2012-11-30
SOT457plastic, surface-mounted package (SC-74; TSOP6); 6 leadsOutline drawing2018-11-28

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File nameTitleTypeDate
NCR321UNCR321U SPICE modelSPICE model2019-11-21

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
NCR321UNCR321UX934070295115Reel 7" Q1/T1Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.