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Product Detailed Parameters
- Description：4-CHANNEL WLED CONTROLLER AND HI
- Series：MP
- Mfr：Monolithic Power Systems Inc.
- Package：Tape & Reel (TR)
- Type：DC DC Controller
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：4
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：24V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：150kHz ~ 590kHz
- Dimming：Analog, PWM
- Applications：Backlight, Lighting
- 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-P is a Monolithic Power Systems LED lighting driver IC featuring a 4-channel WLED controller and a high-efficiency buck converter. It operates from a 5 V to 24 V input voltage range with a fixed switching frequency of 235 kHz. The device provides up to 350 mA output current per channel in an SOIC-28 package. It supports PWM dimming and functions within a temperature range of -40°C to +125°C, dissipating up to 2 W of power.
Feature Summary
- Integrates a 4-channel white LED controller with a synchronous buck converter for efficient backlighting.
- Supports PWM dimming for precise brightness control across multiple LED strings.
- Operates at a fixed 235 kHz switching frequency to minimize external component size.
- Designed for high efficiency and thermal performance in compact SMD packages.
Applications
- LCD panel backlighting for tablets
- LCD panel backlighting for notebook computers
- General LED lighting systems requiring multi-channel control
Procurement Notes
Verify the specific suffix 'P' indicates the tape and reel packaging configuration as documented by the manufacturer. Confirm that the SOIC-28 package variant matches the required PCB footprint. Ensure compatibility with the 5 V to 24 V input supply rails specified for this part number before procurement.
Selection Notes
Select this component when a combined solution for WLED regulation and system power conversion is required. It is suitable for designs needing four independent LED channels driven from a single buck converter stage. Consider the 235 kHz frequency for EMI management and the SOIC-28 package for thermal dissipation requirements in space-constrained applications.
Part Context
This part belongs to the MP3378 series of LED drivers from Monolithic Power Systems. It shares functional similarities with other MPS WLED controllers but is distinct in its integrated buck topology and 4-channel output capability. It complements the broader portfolio of PMIC solutions designed for portable electronics display backlights.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical specifications with alternative MPS or third-party WLED controllers if substitution is necessary.
FAQ
What is the maximum input voltage for the MP3378GF-P?
The maximum input voltage is 24 V.
Does the MP3378GF-P support analog dimming?
The datasheet specifies PWM dimming capability; analog dimming is not explicitly documented as a primary feature.
What is the operating temperature range?
The device operates between -40°C and +125°C.
