FL7701MX Integrated Circuits (ICs)

Voltage - Supply (Max):	20V
Base Part Number:	FL7701
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Applications:	Lighting
Dimming:	Analog
Frequency:	20kHz ~ 250kHz
Current - Output / Channel:	--
Voltage - Output:	--
Series:	--
Voltage - Supply (Min):	9V
Number of Outputs:	1
Internal Switch(s):	No
Topology:	Step-Down (Buck)
Type:	AC DC Offline Switcher
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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FL7701MX Application Field and Working Principle

The FL7701MX is a highly advanced PMIC - LED Drivers. It is designed to efficiently drive and protect multiple LED strings while providing precise current control, precise input-output matching, adjustable brightness and fast ESD protection. This controller can be used in a wide range of applications, including automotive, industrial, consumer and display lighting.

General Features

The FL7701MX is a multi-channel LED driver that is simple to use and offers extended features such as protection circuits, wide input/output voltage ranges, current accuracy, precise matching and fast, ESD protection. This driver features up to 60V integrated temperature protection and can support 16 strings of LEDs.

Application Field

The FL7701MX is suitable for a wide range of applications, including automotive and industrial lighting, smart lighting, LED street lighting, and general-purpose LED lighting. It is also suitable for LED TV backlighting, LED signage, and LED display lighting.

Working Principle

The FL7701MX combines a proprietary active power management technology (APMT) with digital pulse width modulation (PWM) dimming control. This driver features a DC/DC step-down converter with PWM dimming control to accurately and smoothly adjust the output current. This driver also features an adjusted or fixed output current, providing constant adjust and over-current protection. The APMT includes an on/off control and a single wire connection for pre- and post-charge circuits. With this technology, the pre-charge circuit is used for a hot start, while the post-charge circuit is used for low leakage current and higher efficiency. The PWM dimming feature provides smooth and flicker-free dimming control with adjustable current and brightness settings. The FL7701MX also features over-temperature protection, short-circuit protection, and open-circuit protection. The driver provides an adjustable threshold current, enabling the user to optimize system power consumption.

Conclusion

The FL7701MX is an advanced PMIC - LED driver that provides precise input-output matching, adjustable brightness, and ESD protection. It is suitable for a wide range of applications, including automotive and industrial lighting, smart lighting, LED street lighting, and general-purpose LED lighting. This driver features a DC/DC step-down converter with PWM dimming control, pre- and post-charge circuits, and over-temperature protection for improved efficiency and safety.

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