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Product Detailed Parameters
- Description：IC LED DRV RGLTR 20HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：2
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：65V
- Voltage - Output：-
- Current - Output / Channel：50mA ~ 250mA
- Frequency：200kHz ~ 1MHz
- Dimming：-
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-HTSSOP
- Grade：-
- Qualification：-
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Overview
The LM3492HCMH/NOPB is a dual-channel LED lighting driver IC manufactured by Texas Instruments. It utilizes a boost topology to drive two individually dimmable LED channels with an output current range of 50 mA to 250 mA. The device operates from a supply voltage between 4.5 V and 65 V, supporting adjustable output voltages. It features a programmable switching frequency from 200 kHz to 1 MHz and includes PWM dimming control. Packaged in an HTSSOP-20 format, it functions within a temperature range of -40°C to +125°C.
Feature Summary
- Dual independent channel architecture for individual LED control
- Integrated PWM dimming capability for precise brightness adjustment
- Built-in thermal shutdown protection for operational safety
Applications
- LED lighting systems requiring dual-zone control
- General illumination applications using boost converter topologies
- Automotive or industrial LED drivers operating within specified voltage ranges
Procurement Notes
Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence as per manufacturer specifications. Confirm the HTSSOP-20 package dimensions match your PCB footprint requirements. Ensure input voltage sources remain within the 4.5 V to 65 V operational limits to prevent damage. Cross-reference the datasheet for thermal management needs given the high-temperature rating.
Selection Notes
Select this component when designing circuits requiring two separate LED strings with independent dimming capabilities. It is suitable for applications needing a boost topology to step up voltage for series-connected LEDs. Consider the adjustable switching frequency for optimizing external component size and efficiency. Verify that the required output current falls within the 50 mA to 250 mA range for optimal performance.
Part Context
This part belongs to the LM3492HC series of LED drivers from Texas Instruments. It is designed specifically for high-performance lighting applications where dual-channel independence is necessary. The series supports various packaging options, with the HCMH variant providing a thermally enhanced HTSSOP-20 package for improved heat dissipation in compact designs.
Replacement Considerations
Check for LM3492HCMHX/NOPB if reel packaging is preferred over tube. Verify compatibility with other LM3492 variants if single-channel operation suffices. Consult official substitution lists for any updated revisions or pin-compatible alternatives.
