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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 40MA 24WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：40V
- Voltage - Output：80V
- Current - Output / Channel：40mA
- Frequency：-
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-WQFN (4x5)
- Grade：-
- Qualification：-
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Overview
The LM3432BSQX/NOPB is a six-output DC-DC regulator designed for LED backlighting applications. It operates as a boost converter with an internal switch, supporting supply voltages from 6V to 40V and delivering up to 80V output. Each channel provides a regulated current of 40mA. The device supports both analog and PWM dimming methods. It is housed in a 24-WQFN (4x5) package with an exposed pad for thermal management.
Feature Summary
- Six independent constant-current channels for uniform LED string regulation
- Integrated high-voltage boost topology suitable for series LED configurations
- Dual-mode dimming capability supporting both analog control and pulse-width modulation signals
Applications
- LCD panel backlighting systems
- High-brightness LED arrays requiring multi-channel regulation
- Automotive display illumination modules
Procurement Notes
Verify the specific suffix 'SQX' against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Confirm that the 24-WQFN footprint matches the target PCB design. Check for obsolescence notices as component lifecycles may change without immediate public announcement.
Selection Notes
Select this component when designing circuits requiring six isolated LED channels driven by a single boost converter. Ensure the input voltage range aligns with the system power supply. Verify that the required dimming interface supports either analog voltage levels or PWM frequencies compatible with the controller's input specifications.
Part Context
This part belongs to the LM3432 family of LED drivers from Texas Instruments. It shares functional similarities with other members of the series but is distinguished by its specific six-channel configuration and WQFN packaging. It serves as a specialized solution for complex backlight architectures compared to single or dual-channel alternatives.
Replacement Considerations
Direct substitutes include the LM3432BSQ/NOPB, which shares identical electrical characteristics and functionality. Verify package compatibility between the 'SQ' and 'SQX' variants before substitution.
