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Product Detailed Parameters
- Description：IC LED DRVR CTRLR PWM 28TSSOP
- Series：-
- Mfr：Monolithic Power Systems Inc.
- Package：Tube
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：4
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：24V
- Voltage - Output：-
- Current - Output / Channel：350mA
- Frequency：150kHz ~ 590kHz
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The MP3378EGF is a 4-channel White LED controller and synchronous Buck-Boost converter manufactured by Monolithic Power Systems. It operates within an input voltage range of 5 V to 24 V, delivering up to 300 mA output current per channel. The device utilizes a TSSOP-28 package with exposed pad and supports analog and PWM dimming. Operating frequency ranges from 150 kHz to 590 kHz, with a maximum power dissipation of 3.9 W. It functions between -40°C and +125°C junction temperature.
Feature Summary
- Integrates a synchronous Buck-Boost topology for efficient wide-range LED driving
- Supports both analog and PWM dimming methods for precise brightness control
- Features four independent output channels for multi-string LED arrays
Applications
- LCD panel backlighting for tablets and notebooks
- Virtual reality (VR) display backlighting systems
- General white LED lighting driver circuits
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'EGF' corresponds to the TSSOP-28 package variant. Check for moisture sensitivity level (MSL 2A) requirements during storage and handling. Ensure compatibility with existing PCB footprint designs before procurement.
Selection Notes
Select this component for applications requiring wide input voltage flexibility and high efficiency across varying LED string configurations. Consider the TSSOP-28 package constraints for thermal management due to the 3.9 W power dissipation rating. Evaluate the need for synchronous rectification benefits over non-synchronous alternatives in space-constrained designs.
Part Context
Part of the MP3378 family of LED drivers designed for portable electronics. It complements other MPS solutions like the MP3378GY-P, though it differs in topology (Buck-Boost vs. Buck) and package type. It serves as a specialized driver for complex backlighting needs in mobile devices.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official MPS resources for qualified replacements or pin-compatible alternatives.
