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Product Detailed Parameters
- Description：IC LED DRV CTRL PWM 120MA 28SOIC
- Series：-
- 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：120mA
- 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-Z is an eight-channel white LED driver controller manufactured by Monolithic Power Systems. It utilizes a boost topology to drive WLED arrays for large LCD panel backlights. The device operates with an input voltage range of 9 V to 35 V and supports a maximum output current of 120 mA per channel. It features a fixed switching frequency of 280 kHz and employs PWM dimming capabilities. The component is housed in a 28-SOIC package and functions within a temperature range of -20°C to +85°C.
Feature Summary
- Eight internal current sources provide precise current matching between LED strings.
- Supports flexible configuration for driving 8, 6, or 4 LED string channels.
- Integrates comprehensive protection mechanisms including open/short circuit detection and over-temperature shutdown.
Applications
- Backlight drivers for large LCD panels
- White LED array control systems
Procurement Notes
Verify the specific suffix 'EY' corresponds to the SOIC-28 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the specified 9 V to 35 V input range and thermal requirements for the target application environment.
Selection Notes
Select this component for applications requiring high channel count and precise current balancing in boost configurations. Consider the 28-SOIC footprint for PCB layout constraints. Evaluate the 280 kHz switching frequency against electromagnetic interference requirements. Verify that the external MOSFET selection aligns with the 10 V gate drive capability provided by the controller.
Part Context
This part belongs to the MP3391 series of LED lighting drivers designed specifically for white LED backlighting. It shares architectural similarities with other MPS boost controllers but is distinct in its eight-channel output capacity and specific current regulation parameters tailored for display applications.
Replacement Considerations
MP3391EF-LF-Z is a verified alternative within the same product family offering identical functional specifications.
FAQ
How is the switching frequency determined?
The switching frequency is set by an external resistor connected to the device.
What methods are supported for dimming control?
The device supports PWM dimming via an external signal or DC input, with the dimming frequency adjustable via an external capacitor.
