SSL3401HN/1Y

Voltage - Output:	--
Base Part Number:	SSL3401
Supplier Device Package:	32-HVQFN (5x5)
Package / Case:	32-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 105°C (TA)
Applications:	Lighting
Dimming:	--
Frequency:	12.5kHz
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	3.6V
Voltage - Supply (Min):	2.6V
Number of Outputs:	--
Internal Switch(s):	--
Topology:	--
Type:	AC DC Offline Switcher
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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PMIC - LED Drivers

SSL3401HN/1Y, one of the PMIC – LED Drivers, is a highly efficient LED driver designed to drive up to 33 sears of High Bright LED (HBLED), white LED and Low Temperature LED (LTLED). It is built using high-accuracy current mirrors and temperature-compensated feedback together with an efficient switching power controller. The driver is capable of driving LEDs up to 2A each.The SSL3401HN/1Y is a digitally-controlled LED driver with a self-oscillating buck-boost PWM control mode that can adjust the LED current from 0mA to max current. It also features automatic cell current sharing and programmable current limiting. The max input voltage is 24V and the output voltage is adjustable from 0V to 6.5V.One of the key features of the SSL3401HN/1Y is its auto-diagnostic functions. This includes auto-calibration, current limit detection, open fault detection, over temperature protection and OC protection. The programmable current limit can be set up to 16A. The device also has an external soft-start pin that can slow down the ramping of the LED current to prevent inrush currents at start-up.The SSL3401HN/1Y is suitable for various applications including LED backlighting, LED lighting and automotive applications. It has a wide operating temperature range from -40°C to +85°C for both industrial and automotive applications.

Working Principle

The working principle of the SSL3401HN/1Y is based on the Buck-Boost PWM control mode. This control mode is a type of switching power converter that can throttle power supplied to the LEDs. It uses two transistors to convert a fixed DC voltage to a programmable voltage. The two transistors are used to turn the charging and discharging transistors on and off to regulate the voltage.The SSL3401HN/1Y also uses two current mirrors connected to the two switches to control the current flow to the LEDs. The two current mirrors are connected to an I2C input so that the current flowing through the LEDs can be adjusted. The I2C input can be used to program the current flowing through the LEDs. It can also be used to program the current limit, current spreading, soft start, PWM dimming frequency, and several other operating modes.

Application Field

The SSL3401HN/1Y is suitable for applications that require a high-performance and high-efficiency LED driver. It can be used in applications such as LED backlighting, LED lighting, automotive applications and other industrial applications.In LED backlighting, the SSL3401HN/1Y can be used to drive multiple strings of LEDs without any additional current sharing circuit. It also offers high efficiency and low ripple, making it ideal for applications with tight power budgets. It offers excellent dimming performance and can provide up to 500 different dimming levels.In LED lighting, the SSL3401HN/1Y offers excellent performance and efficiency. It is capable of driving up to 33 strings of LEDs with a single IC, which allows for a more compact design. It also offers a wide range of dimming levels, allowing for precise control of the LED lighting.In automotive applications, the SSL3401HN/1Y offers high reliability and low-temperature operation. It has an operating temperature range from -40°C to +85°C, making it ideal for automotive applications where high-temperature performance is critical. It also offers programmable fault detection, automatic cell current sharing and current limit protection, making it suitable for automotive applications.

Conclusion

For applications requiring a high-performance and high-efficiency LED driver, the SSL3401HN/1Y is the perfect choice. It offers excellent performance and efficiency, along with a wide range of features, making it suitable for a wide range of applications such as LED backlighting, LED lighting and automotive applications. This driver offers an attractive solution for applications with tight power budgets, high reliability and low-temperature operation.

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