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Product Detailed Parameters
- Description：IC LED DRV RGLTR 20HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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 LM3492HCMHX/NOPB is a dual-channel LED lighting driver IC from Texas Instruments, utilizing a boost topology. It supports an input voltage range of 4.5 V to 65 V and delivers adjustable output voltages with individual channel currents ranging from 50 mA to 250 mA. The device operates at switch frequencies between 200 kHz and 1 MHz within a -40°C to +125°C temperature range. Packaged in an HTSSOP-20 format, it features PWM dimming, soft start, thermal shutdown, and enable/shutdown controls.
Feature Summary
- Dual independent channels for individual LED current control
- Integrated boost converter topology for high-voltage LED strings
- Supports PWM dimming for precise brightness adjustment
- Includes protection mechanisms such as thermal shutdown and soft start
Applications
- Automotive exterior lighting systems
- High-brightness LED street lighting fixtures
- Industrial LED illumination arrays
- General lighting applications requiring dual-channel regulation
Procurement Notes
Verify the exact part number suffix against official Texas Instruments documentation to ensure correct package type and tape/reel specifications. Confirm that the HC variant meets specific automotive or industrial qualification requirements if applicable. Cross-reference the datasheet revision date to ensure compatibility with current design standards and regulatory compliance needs.
Selection Notes
Select this component when designing circuits requiring two independently controlled LED channels driven by a single boost converter. Ensure the application input voltage falls within the 4.5 V to 65 V range and that the required peak current per channel does not exceed 250 mA. Consider the HTSSOP-20 package constraints for thermal management and PCB layout space availability.
Part Context
This device belongs to the LM3492 family of LED drivers, specifically the HC series designed for higher current capabilities compared to standard variants. It serves as a specialized solution for complex LED arrays where independent channel control is necessary without requiring separate power stages for each string.
Replacement Considerations
LM3492MHX/NOPB offers similar functionality but with a lower maximum output current of 200 mA per channel. LM3492HCQMH/NOPB provides automotive qualification (AEC-Q100) while maintaining identical electrical characteristics and pinout compatibility.
