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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 16HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：DC DC Controller
- Topology：SEPIC, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：75V
- Voltage - Output：3V ~ 72V
- Current - Output / Channel：-
- Frequency：2MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-HTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM3421Q0MH/NOPB is an N-Channel controller designed for constant-current LED drivers, manufactured by Texas Instruments. It supports boost, buck, and SEPIC topologies with a single output capable of handling up to 5 A. The device operates within a supply voltage range of 4.5 V to 75 V and delivers output voltages from 3 V to 72 V. It features an adjustable switching frequency between 100 kHz and 2 MHz. The component functions reliably across a temperature range of -40°C to +125°C and is housed in an HTSSOP-16 package.
Feature Summary
- Supports multiple converter topologies including boost, buck, and SEPIC configurations for flexible LED driver design.
- Enables precise current regulation through analog and PWM dimming capabilities integrated into the control loop.
- Includes thermal shutdown protection to safeguard the device and connected components during overheating events.
Applications
- Automotive exterior lighting systems requiring robust constant current regulation
- High-power LED illumination modules utilizing various DC-DC converter architectures
- Industrial lighting fixtures demanding wide input voltage compatibility
Procurement Notes
Verify the specific suffix Q0 against official Texas Instruments documentation to confirm automotive qualification status and exact electrical tolerances. Ensure the HTSSOP-16 package variant matches your PCB footprint requirements. Cross-reference the datasheet revision date to guarantee compatibility with your design specifications before finalizing procurement orders.
Selection Notes
Select this component when designing LED drivers that require support for buck, boost, or SEPIC topologies with high input voltage tolerance. It is suitable for applications needing adjustable switching frequencies to optimize magnetic component size. Consider its thermal management features and wide operating temperature range for harsh environments.
Part Context
This part belongs to the LM3421 series of N-Channel controllers for constant-current LED drivers. It is produced by Texas Instruments and continues the lineage of National Semiconductor power management solutions. The device is engineered for high-efficiency LED lighting applications requiring precise current control and flexible topology support.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Texas Instruments resources for potential cross-references or updated family members.
