FAN7346M

Description：IC LED DRIVER LINEAR PWM 28SOIC
Series：-
Mfr：onsemi
Package：Tube

SKU:d3f64277a85c Category: LED Drivers IC Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER LINEAR PWM 28SOIC
Series：-
Mfr：onsemi
Package：Tube
Type：Linear
Topology：-
Internal Switch(s)：No
Number of Outputs：4
Voltage - Supply (Min)：10.5V
Voltage - Supply (Max)：35V
Voltage - Output：-
Current - Output / Channel：-
Frequency：-
Dimming：PWM
Applications：Backlight
Operating Temperature：-40°C ~ 125°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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FAN7346M

Overview

The FAN7346M is a 4-channel LED current-balance controller designed for edge-type LED backlight units and lighting. It maintains equal LED current across four arrays with wide string voltage support up to 100V and VCC range of 10.5V to 35V. The device features linear balance control, supports external PWM dimming with ratios from 0.5% to 100%, and generates an integrated feedback signal combining current feedback and PWM dimming for primary side regulation. It includes thermal shutdown, over-voltage regulation, and individual channel protections for open, short, and over-current conditions.

Feature Summary

Linear Balance Control for 4-Channel LED Arrays
Integrated Feedback Signal Generation for Primary Side Regulation
Comprehensive Protection Mechanisms Including Thermal Shutdown and Channel Fault Detection

Applications

LED Backlight Units (BLU) for LCD TVs
LED Backlight Units (BLU) for LCD Monitors
General LED Lighting Applications

Procurement Notes

Verify component authenticity through authorized onsemi channels or certified distributors. Confirm package integrity and pin alignment against the 28-SOIC specification. Check datasheet revisions for any updates to electrical characteristics or protection thresholds. Ensure storage conditions comply with moisture sensitivity level requirements prior to assembly.

Selection Notes

Select this component when designing systems requiring precise current matching across multiple LED strings without secondary side sensing. Ideal for applications where minimizing components between primary and secondary sides is critical. Consider the wide input voltage range and external switch compatibility when defining power stage parameters.

Part Context

Part of the FAN7346 series by onsemi, specifically the FAN7346M variant in a 28-pin SOIC package. Designed as a specialized solution for high-efficiency LED drivers, it complements other power management ICs like PFC controllers and LLC resonant converters in complete LED ballast designs.