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Product Detailed Parameters
- Description：8-CH, 80MA BOOST WLED CONTROLLER
- Series：MP
- Mfr：Monolithic Power Systems Inc.
- Package：Tape & Reel (TR)
- Type：DC DC Controller
- Topology：Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：8
- Voltage - Supply (Min)：9V
- Voltage - Supply (Max)：35V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：280kHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-20°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SOIC
- Grade：-
- Qualification：-
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Overview
The MP3391EY-LF-P is an 8-channel boost WLED controller from Monolithic Power Systems, designed for large LCD panel backlighting. It operates with a 9V to 35V input voltage range and drives an external MOSFET. The device features eight internal current sources providing up to 120mA per channel with 2.5% matching accuracy. It supports PWM dimming via external signals or DC inputs, with adjustable switching frequency. The component is housed in a 28-SOIC package and functions within a temperature range of -20°C to +85°C.
Feature Summary
- Eight integrated current sources ensure precise LED string current balancing
- Supports flexible PWM dimming through external control signals
- Includes comprehensive protection mechanisms against open and short circuits
Applications
- Large size LCD panel backlighting systems
- White LED array driving circuits
- Monitor and television display modules
Procurement Notes
Verify the specific suffix 'P' indicates the tape and reel packaging configuration as distinct from other variants. Confirm the 28-SOIC package dimensions match the target PCB layout requirements. Ensure the operating temperature range aligns with the final assembly environment specifications before procurement.
Selection Notes
Select this component when designing high-channel-count backlight drivers requiring uniform current distribution. The fixed 280kHz typical frequency suits applications where EMI filtering constraints allow standard switching rates. Consider the 120mA maximum output capability to determine the number of series LEDs per string based on forward voltage requirements.
Part Context
This part belongs to the MP3391 family of LED lighting drivers. It shares core architectural similarities with variants like the MP3391EY-LF-Z but differs in packaging and reel quantity specifications. The family targets professional display backlighting solutions requiring high channel counts and precise current regulation.
Replacement Considerations
MP3391EY-LF-Z serves as a functional equivalent within the same product line, differing primarily in packaging format and reel quantity specifications.
