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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 150MA SOT223
- Series：-
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Linear
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：40V
- Voltage - Output：40V
- Current - Output / Channel：150mA
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-55°C ~ 150°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-261-4, TO-261AA
- Supplier Device Package：SOT-223
- Grade：Automotive
- Qualification：AEC-Q101
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Overview
The NCR421ZX is an LED driver IC from Nexperia, housed in a SOT-223 (SC-73) package. It features a stabilized output current of 10 mA without external components, adjustable up to 150 mA with an external resistor. The device supports a supply voltage up to 40 V and includes a digital PWM input for frequency modulation up to 10 kHz. It offers high current accuracy across supply variations and maintains a low voltage overhead of 1.4 V. The component is qualified to AEC-Q101 standards for automotive reliability.
Feature Summary
- Stabilized output current capability adjustable via external resistor
- Digital PWM input support for frequency control
- High current accuracy under varying supply voltages
- AEC-Q101 qualification for automotive applications
Applications
- Constant LED driver circuits
- Generic constant current sources
- Automotive interior lighting systems
- Dashboard instrumentation displays
- Number plate illumination
Procurement Notes
Verify the specific suffix 'ZX' against official Nexperia documentation to confirm packaging details such as reel specifications or tape-and-reel dimensions. Ensure the selected variant matches the required AEC-Q101 qualification status if used in automotive designs. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.
Selection Notes
Select this component when a compact solution for constant current LED driving is required in automotive or industrial environments. The integrated design reduces board space by eliminating external resistors for basic operation. Consider the 10 kHz PWM limit for dimming applications. Verify thermal dissipation requirements given the 1250 mW power handling capability in the SOT-223 package.
Part Context
This device belongs to Nexperia's line of resistor-equipped NPN transistor LED drivers. It integrates two diodes on a single chip within a medium-power plastic package. The series is designed to simplify LED circuit design by providing stable current regulation with minimal external components, targeting cost-sensitive and space-constrained applications.
Replacement Considerations
NCR420Z is a related variant in the same SOT-223 package family. Verify functional equivalence regarding PWM input availability and current adjustment ranges before substitution. Confirm that pinout compatibility and thermal characteristics align with the existing design constraints.
