NCR321Z

250 mA LED driver in SOT223

Automotive qualified

LED driver consisting of a resistor-equipped NPN transistor with two diodes on one chip in a medium power SOT223 (SC-73) plastic package.

Table 1. Product overview
Type number	Package
Type number	Nexperia	JEITA
NCR320Z	SOT223	SC-73
NCR321Z	SOT223	SC-73

250 mA LED driver in SOT223

Buy from Nexperia

SKU	Stock*	MOQ	Price per unit**	Quantity

Buy from distributors

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

* Stock values are subject to change
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia

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

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 number	Package version	Package name	Size (mm)	V_SUP [max] (V)	Limiting I_O with external resistor [max] (mA)	I_O [max] (mA)	P_tot [max] (mW)	Polarity
NCR321Z	SOT223	SC-73	6.5 x 3.5 x 1.65	16	250	11	1250	NPN

Package

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Package information	Reflow-/Wave soldering	Packing
NCR321Z	NCR321ZX ( 9340 703 31115 )	Active	CR321Z	SC-73 (SOT223)	SOT223	REFLOW_BG-BD-1 WAVE_BG-BD-1	Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	MSL	MSL leadfree
NCR321Z	NCR321ZX	NCR321Z		1	1

Quality and reliability disclaimer

Documentation (8)

File name	Title	Type	Date
NCR320Z_NCR321Z	250 mA LED driver in SOT223	Data sheet	2019-02-04
Nexperia_document_factsheet_LED_Driver_2020	Constant current LED Drivers	Leaflet	2020-08-18
Nexperia_document_factsheet_LED_Driver_2020_CHN	LED Driver Factsheet CHN	Leaflet	2020-08-20
NCR321Z_Nexperia_Product_Quality	NCR321Z Nexperia Product Quality	Quality document	2019-05-20
NCR321Z_Nexperia_Product_Reliability	NCR321Z Nexperia Product Reliability	Quality document	2022-03-21
NCR321Z	NCR321Z SPICE model	SPICE model	2022-11-07
REFLOW_BG-BD-1	Reflow soldering profile	Reflow soldering	2021-04-06
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

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 name	Title	Type	Date
NCR321Z	NCR321Z SPICE model	SPICE model	2022-11-07

Ordering, pricing & availability

Type number	Orderable part number	Ordering code (12NC)	Packing	Packing quantity	Buy online
NCR321Z	NCR321ZX	934070331115	Reel 7” Q1/T1 or Q2/T3	-	Order 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.