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Product Detailed Parameters
- Description：IC LED DRVR CTRLR PWM 28TSSOP
- Series：-
- Mfr：Monolithic Power Systems Inc.
- Package：Tape & Reel (TR)
- 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 MP3378GF-Z is a 4-channel WLED controller and high-efficiency buck converter from Monolithic Power Systems. It operates within a 5 V to 24 V input voltage range and supports an output voltage of up to 6 V per channel. The device features a switching frequency of 530 kHz and delivers a maximum output current of 350 mA per channel. It utilizes a 28-TSSOP-EP package and functions reliably across a temperature range of -40°C to +125°C.
Feature Summary
- Integrates a four-channel white LED controller with a high-efficiency synchronous buck converter for backlighting applications.
- Supports both analog and PWM dimming methods for precise brightness control.
- Features internal synchronization capability to minimize electromagnetic interference in multi-device systems.
Applications
- LCD panel backlighting for tablets
- LCD panel backlighting for notebook computers
- Virtual reality (VR) display modules
Procurement Notes
Verify the specific suffix against official MPS documentation to confirm pinout and thermal pad configurations. Ensure compatibility with existing PCB footprints, as the 28-TSSOP-EP package requires adequate thermal relief. Cross-reference the datasheet revision date to confirm regulatory compliance status and final electrical characteristics before integration into production designs.
Selection Notes
Select this component when designing systems requiring independent control of four WLED strings from a single power rail. It is suitable for applications needing efficient step-down conversion combined with precise current regulation. Consider the operating temperature range and package thermal performance relative to the enclosure constraints of the target electronic device.
Part Context
This part belongs to the MP3378 series of LED drivers designed by Monolithic Power Systems. The series focuses on providing integrated solutions for mobile and portable electronics, combining power conversion and LED driving capabilities to reduce component count and board space requirements in modern display backlight architectures.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official manufacturer channels for qualified alternatives or updated revisions within the same product family.
