AP3705KTR-G1

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PMIC (Power Management Integrated Circuit) has been today’s trusted and reliable power management supplier that used by developers and designers. It has been designed by experienced experts, to extend its capabilities and power savings up to 95%. The most popular is PMIC - LED Drivers which help to improve and deliver the energy efficiency and high-brightness performance of an LED application. One of the most popular PMIC – LED Drivers is AP3705KTR-G1 which is an LED driver integrated circuit with output current up to 2A. It can support a wide input voltage range from 4.2V to 20V, suitable for automotive, industrial, consumer and LCD LED backlight application. Besides, AP3705KTR-G1 also has many advantages that make it stand out from other LED Drivers. It can provide a wide range of adjustable current output which can be precisely controlled via an external resistor. It also has a programmable soft-start period and hiccup current limiting to protect the device that involved in extreme condition. Its short circuit protection and over-temperature protection help to reduce the total solution cost and prevent damage by sudden power related accidents.Application FieldAP3705KTR-G1 can be used for automotive , industrial and consumer applications such as LCD backlighting, signage backlighting, automotive lamps, industrial lighting and more. Automotive lamps application can be applied to automotive headlamps, taillamps and turn signals. The output current from AP3705KTR-G1 enables a secure operation when the input voltage range is 4.2V to 20V, suitable for most vehicles. Additionally, its over-temperature protection, current monitoring and the programmable soft-start are the perfect features for automotive lamps application. Industrial lighting application used AP3705KTR-G1 LED driver have the wide dimming range capability which can dimmer the LED lighting to match customer’s needs. Its analog dimming and PWM dimming control can support leading edge, trailing edge and double pulse modulation mode. It also offers excellent EMI performance which can limit the EMI emissions to meet the stringent EMI regulations.LCD backlighting applications come with mid-range voltage input, high light efficacy and adjustable current output capability. The AP3705KTR-G1 offers 4.2V-20V input voltage range, excellent scalability and current accuracy. It is suitable for automotive and industrial LCD LED backlighting applications.Working PrincipleAP3705KTR-G1 is based on the control of two modes: linear and PWM regulation. In linear regulation mode it is internally clamp the voltage of inductor and the voltage will be about 6V, regulator the highest voltage at 6V, and sets a linear regulation in order to limit the current, the output will never be higher than the maximum value. When in PWM mode, AP3705KTR-G1 will detect the output voltage, and sets the duty ratio according to the current. The higher of the output voltage, the larger of the duty ratio. The actual duty ratio is determined by the voltage of inductor, when the voltage of inductor goes higher, the higher of the duty ratio will be set. AP3705KTR-G1 is also able to detect the current of inductor, when the current of the inductor goes over the value of current limit and OVP limit, the output will be directly closed to protect the circuit. In conclusion, AP3705KTR-G1 is an ideal PMIC - LED Drivers product in automotive, industrial and consumer applications. It offers wide input voltage from 4.2V to 20V and wide adjustable current output up to 2A which is suitable for most applications. Moreover, it also has programmable soft-start and hiccup current limiting to protect the device from extreme conditions. Moreover, it also has excellent EMI performance which can meet the stringent EMI regulations. With all those features, AP3705KTR-G1 is the trustable product for all LED Drivers application.

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