MP3391EF-LF

Description：IC LED DRVR CTRLR PWM 28TSSOP
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tube

SKU:6b713533ece8 Category: LED Drivers IC Brand: Monolithic Power Systems Inc.

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Product introduction

Product Detailed Parameters

Description：IC LED DRVR CTRLR PWM 28TSSOP
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tube
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-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package：28-TSSOP-EP
Grade：-
Qualification：-

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MP3391EF-LF

Overview

The MP3391EF-LF-Z is an 8-channel boost WLED controller from Monolithic Power Systems. It operates with an input voltage range of 9V to 35V and supports a maximum output current of 120mA per channel. The device utilizes a fixed-frequency current-mode architecture with a switch frequency set by an external resistor. It features 2.5% current matching accuracy between LED strings and includes PWM or DC dimming capabilities. The component is housed in a 28-pin TSSOP package and functions within a temperature range of -20°C to +85°C.

Feature Summary

Eight internal current sources provide precise current balancing for LED arrays
Integrated fault protection including open/short circuit detection and overvoltage thresholds
Flexible dimming support via external PWM signals or DC input control
Low regulation voltage on LED current sources enhances overall system efficiency

Applications

Large LCD panel backlighting systems
White LED array drivers
Display backlight controllers

Procurement Notes

Verify the specific suffix (LF-Z vs LF-P) against the required packaging format, as these denote different reel quantities. Confirm the operating temperature range requirements align with the specified -20°C to +85°C limit. Ensure the design accommodates the 28-pin TSSOP footprint and that the input voltage stays within the 9V to 35V operational window for proper functionality.

Selection Notes

Select this component when driving large WLED arrays requiring high channel count and tight current matching. It is suitable for applications needing flexible dimming control and robust fault protection. Consider the thermal performance of the TSSOP package relative to the total power dissipation across all eight channels under maximum load conditions.

Part Context

This part belongs to the MP3391 series of step-up controllers designed specifically for display backlighting. It shares architectural similarities with other MPS WLED drivers but distinguishes itself through its eight-channel configuration and specific input voltage range optimized for higher voltage LED strings.

Replacement Considerations

Public documentation indicates the MP3394S as a recommended alternative for new designs, though it offers only four outputs. Verify compatibility regarding pinout and control logic before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.