Voltage - Supply (Max):	5.5V
Supplier Device Package:	28-SSOP
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	--
Dimming:	Analog
Frequency:	--
Current - Output / Channel:	34mA
Voltage - Output:	--
Series:	--
Voltage - Supply (Min):	2.7V
Number of Outputs:	18
Internal Switch(s):	--
Topology:	--
Type:	Linear
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

IS31FL3731-SALS2 Application Field and Working Principle

Introduction

The IS31FL3731-SALS2 is a Power Management Integrated Circuit (PMIC) – LED Driver from ISSI (Integrated Silicon Solution Inc.). It provides a complete solution for driving high-brightness LEDs in different applications. This PMIC includes embedded Gate-Driver, Buck Regulator and high-accuracy on/off control logic for controlling multiple series-connected LEDs for general drive applications. The IS31FL3731-SALS2 provides general high-brightness LED drive solution, suitable for application such as Automotive and Television. The circuit provides up to 16 PWM channels, with up to 92% of efficiency. The adjustable maximum average current allows the user to adjust the device power output according to the current need. It also provides advanced shutdown and protection features, which provide protection against over-voltage, over-temperature, and overload.

Application Field

The IS31FL3731-SALS2 is designed for driving multiple series-connected LEDs in general drive applications. It can be used for a wide range of applications, including Automotive and Television. As for Automobiles, this PMIC can be used for both interior and exterior lighting. It can provide the lighting solution for low-speed street lights, side marker lamps, interior reading lamps, foot well lamps, indicator lamps and dashboard panel lamps. The wide voltage range, from 5V to 24 V, gives it great flexibility for use in automotive applications. It also includes power save mode and burst PWM dimming mode for optimized brightness control and power efficiency.The IS31FL3731-SALS2 is also suitable for use in Television applications. It is designed to be compatible with ST STAR panel drivers. The up to 16 PWM channels allow for controlling multiple series-connected LEDs for backlight and direct illumination. It also includes temperature protection, which allows the device to reduce the LED current when the temperature reaches a certain threshold.

Working Principle

The IS31FL3731-SALS2 PMIC - LED Driver works by controlling multiple series-connected LEDs to generate high-brightness illumination. The device includes a Gate-Driver and a Buck Regulator, which allows it to provide constant current output and improved efficiency. The Gate-Driver uses half-bridge technology to apply a current pulse to the LED array. This creates a forward-biasing voltage across the LED, which in turn generates illumination. The PWM control logic and adjustment circuits can be used to control the brightness of the LED array. The Buck Regulator controls the current going through the LEDs and ensures that it is constant. The device also includes a power save mode and a burst PWM dimming mode, which can be used to further improve the efficiency of the system. The device also includes advanced shutdown and protection features, which provide protection against over-voltage, over-temperature, and overload.

Conclusion

The IS31FL3731-SALS2 PMIC - LED Driver is a complete solution for driving high-brightness LEDs in different applications. It provides up to 16 PWM channels, with up to 92% of efficiency. The device is suitable for applications such as Automotive and Television, and includes temperature protection and advanced shutdown and protection features. The Gate-Driver and the Buck Regulator allow the device to provide constant current output and improved efficiency, while the power save mode and burst PWM dimming mode can further improve the efficiency of the system.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description