The following is an article about "60V Constant Current IC Built-in 5V Power MOS Compatible PWM Step-Down LED Constant Current Driver Chip SL8443B" according to your requirements and according to the characteristics of knowledge and experience articles:
1. Overview. The SL8443B is a 60V constant current IC with built-in 5V power MOS, compatible with PWM step-down LED constant current driver ICs. It is widely used in LED lighting, backlight, display and other fields, with the advantages of high efficiency, high reliability, low cost and so on. This article will introduce the working principle, characteristics and applications of SL8443B in detail.
Second, the working principle.
The SL8443B adopts PWM control mode, which controls the brightness of the LED by adjusting the duty cycle of the PWM signal. When the PWM signal is high, the power MOS is turned on and the LED light is onWhen the PWM signal is low, the power MOS is turned off and the LED light is off. By adjusting the frequency and duty cycle of the PWM signal, precise control of LED brightness can be achieved.
3. Features. 1.60V constant current IC: The SL8443B has a withstand voltage of 60V and can adapt to high-voltage application scenarios.
2.Built-in 5V power MOS: The built-in 5V power MOS can reduce the number of external components, reduce costs, and improve system reliability.
3.PWM compatible: The SL8443B is compatible with a variety of PWM signal inputs, making it easy to use with other control circuits.
4.High efficiency: The SL8443B adopts advanced circuit design and has high efficiency characteristics, which can effectively reduce the power consumption of the system.
5.High reliability: The SL8443B has undergone strict quality control and reliability testing, and can work stably in harsh environments.
6.Low cost: SL8443B adopts advanced production technology and materials, which can effectively reduce production costs.
Fourth, application. SL8443B is widely used in LED lighting, backlight, display and other fields. In the field of LED lighting, it can be used as the core driver chip of LED lamps to realize the constant current drive of LED lampsIn the field of backlight, it can be used as a backlight LED driver chip to realize the constant current drive of backlight LEDIn the field of display, it can be used as the LED backlight driver chip of the display panel to realize the constant current drive of the display panel.
5. Summary. The SL8443B is an excellent 60V constant current IC with a built-in 5V power MOS, compatible with PWM step-down LED constant current driver ICs. It has the advantages of high efficiency, high reliability, low cost, etc., and is widely used in LED lighting, backlight, display and other fields. If you need more information about SL8443B, please consult the relevant materials or contact a professional for consultation.
Overview. The SL8443B is a high-precision, high-brightness LED constant current driver controller with built-in 5A power MOS switch step-down.
The SL8443B sets the output current through an external resistor up to a maximum output current of 25aï¼›Only a few components are required to achieve step-down, constant-current drive functions. Dimming Foot ADJ is compatible with PWM and analog dimming.
When the ADJ pin voltage is lower than 0At 3V, the output is turned off and enters the standby state.
The system adopts the inductor current hysteresis control mode, which has a very fast response to load transients and a high rejection ratio to the input voltageThe inductor ripple is 20% and the maximum operating frequency is 1MHz.
The SL8443B is particularly well suited for applications with a wide input voltage range, ranging from 55V to 60V. In particular, there is a built-in LDO with an output voltage of 55V, up to 5mA current output.
The SL8443B has a built-in over-temperature protection circuit, and when the chip reaches the over-temperature protection point, the system immediately enters the over-temperature protection mode, which will reduce the input current to improve system reliability.
The SL8443B is available in an ESOP8 package. The heatsink has built-in SW pins.
Peculiarity. Maximum Output Current: 25a
Built-in 60V 30M power MOS
High efficiency: 96%.
High-end current sensing.
ADJ is compatible with both digital and analog dimming.
Hysteresis control without loop compensation.
Maximum working frequency: 1MHz
Current accuracy: 3%.
Wide Input Voltage: 55v~60v
Over-temperature protection. High stability can be maintained when operating at low differential pressure.
Fields of application. Architectural, industrial, ambient lighting.
MR16 and LED light.
Automotive lighting. Schematic: