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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 40MA 24WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LM3432SQE/NOPB is a six-channel current regulator IC designed for LED backlight applications. It operates as a DC-DC boost converter with an internal switch, supporting input voltages from 6V to 40V and delivering up to 80V output. The device provides 40mA per channel and supports both analog and PWM dimming methods. Packaged in a 24-WQFN (4x5) exposed pad surface-mount case, it functions within a temperature range of -40°C to 125°C TJ.
Feature Summary
- Six independent constant-current channels for uniform backlight illumination
- Integrated high-voltage boost topology with internal power switch
- Dual-mode dimming capability supporting analog and pulse-width modulation signals
Applications
- LCD panel backlighting systems
- Mobile device display drivers
- Portable electronic equipment lighting
Procurement Notes
Verify the specific suffix 'E' against the manufacturer's official documentation to confirm package variant and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with Texas Instruments or authorized distributors, as availability may vary by region and production cycle.
Selection Notes
Select this component when designing multi-zone LED backlight arrays requiring precise current regulation across six outputs. Ensure the application voltage range aligns with the 6V to 40V input specification and that thermal management strategies accommodate the WQFN package's heat dissipation requirements under full load conditions.
Part Context
This part belongs to the LM3432 family of LED driver integrated circuits from Texas Instruments. It is specifically engineered for high-efficiency backlighting solutions where multiple LED strings must be driven from a single power source with minimal external components. The SQE variant denotes a specific packaging and reel configuration within this product line.
Replacement Considerations
LM3432BSQ/NOPB
FAQ
What is the maximum output voltage capability of the LM3432SQE/NOPB?
The device supports a maximum output voltage of 80V, suitable for driving series-connected LED strings.
Does the LM3432SQE/NOPB support digital dimming control?
Yes, the IC supports both analog dimming and Pulse-Width Modulation (PWM) dimming inputs for brightness control.
