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
SOT223
SOT223
JEITA
SC-73
SC-73
NCR320Z
NCR321Z
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 drivers