ADP5520XCPZ-R7

ADP5520XCPZ-R7, or R7, is a PMIC or power management integrated circuit (IC) specifically designed for LED drivers in commercial, residential and mobile applications. The integrated circuit allows for the efficient utilization of power to drive multiple LCD backlights with limited energy expenditure.

The R7 consists of a high side N-channel MOSFET, a low side N-channel MOSFET and an advanced analog power management system suitable for driving up to four LED strings or channels and providing total current control up to 1A. It includes 5 general purpose inputs and two general purpose outputs configurable as a low side switch, a pulse-width-modulated (PWM) output, a current sense amplifier, a duty cycle generator and a thermal protection circuit.

The R7 is designed to regulate the current of LED backlight applications to drive up to 4 individual strings. The circuit provides total current control from 1A to 50mA, allowing for dimming with an input voltage range up to 24V and PWM dimming for applications with an input voltage range of up to 36V. The R7’s 5 general purpose inputs are configurable as PWM, duty cycle generator and/or current sense amplifier inputs and can be used to control up to 4 backlight strings in either single-string or multi-string applications. The two general purpose output pins are compatible with 3.3V logic and are used to drive either a low side switch or a PWM output. In addition, the R7 provides thermal protection functions to reduce power dissipation by adjusting the LED current in response to temperature changes.

In terms of performance and efficiency, the R7’s advanced analog power management system offers efficiencies up to 95%, making it an excellent choice for LED drivers. The R7 also has an on-chip digital to analog controller that allows for easy programming and fine-tuning of the LED brightness and power levels. Furthermore, the circuit is designed to support up to 4 LED strings, making it ideal for multi-channel LED applications.

In conclusion, the ADP5520XCPZ-R7 is an excellent LED driver IC for LED backlight applications, providing total current control from 1A to 50mA and compatible input voltages up to 36V. It features an efficient analog power management system and on-chip digital to analog converter to simplify programming, as well as thermal protection circuitry to protect against excessive temperatures. The ability to drive up to 4 LED strings makes it suitable for both single-channel and multi-channel LED applications. With its advanced performance and efficient design, the ADP5520XCPZ-R7 is an extremely attractive option for power management solutions.