ISL97671AIRZ-TK

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ISL97671AIRZ-TK Application Field and Working Principle

PMIC - LED Drivers are an important component of the industrial control and consumer electronic industry. The ISL97671AIRZ-TK is a Dual High Drive LCD/LED lighting controller. It is especially useful for dual-channel LCD and LED lighting applications. The ISL97671AIRZ-TK uses a synchronous buck-boost converter to achieve both current and voltage regulation to improve the light uniformity and color accuracy of the displays. It is designed for use in portable devices, such as handheld and embedded devices.

Key Features of the ISL97671AIRZ-TK

• High Voltage Input: 3.3V to 4.5V
• Wide Output Range: 0.8V to 4V
• Integrated Synchronous Buck-Boost Converter
• Output Voltage and Current Regulation
• On-Chip Controls
• Programmable Digital Interface

The ISL97671AIRZ-TK is used typically in portable electronic devices to provide adjustable light levels. It is a compact solution that provides a wide current range (from 0.3mA to 300mA) and a wide output voltage range (from 0.8V to 4V). It can also be used to provide power to battery powered displays and LED backlight. The device is capable of delivering high-power output with very little power dissipation.

Working Principle of the ISL97671AIRZ-TK

The control principle of the ISL97671AIRZ-TK is based on a synchronous buck-boost converter. It uses a switched transistor as the main power switch and a diode as the rectifier. The diodes rectify incoming AC power for DC powering of the circuitry. The transistor then alternates between the two polarities and provides regulated power to the load. The device has an internal amplifier and comparator circuit to monitor the output voltage and current. The feedback loop is adjusted to ensure an optimal operating point.

The ISL97671AIRZ-TK uses an on-chip control circuit to monitor and adjust the output current and voltage. The device can also regulate the input voltage to maintain a constant output. The device also has an internal oscillator, which can be programmed to provide regulation of the output current or voltage. The output current is adjustable through a 3-bit dip switch. The output voltage can be adjusted by an on-chip trimming potentiometer.

The ISL97671AIRZ-TK also has an on-chip 5th order low pass filter, which eliminates any high frequency ripple from the output. The filter is designed to operate over a wide temperature range and prevent damage to sensitive components. The device also features over temperature protection and over current protection for added safety.

Applications of the ISL97671AIRZ-TK

The ISL97671AIRZ-TK is ideal for applications that require adjustable power levels, such as portable devices. It is also suitable for LED lighting applications. It can be used to provide adjustable light levels for LCDs, LED backlights, and LED area lights. It can also be used to provide power to battery powered displays.

The ISL97671AIRZ-TK is a versatile and efficient solution for dual-channel LCD and LED lighting applications. It is a reliable solution that is designed to operate over a wide temperature range and is capable of delivering high-power output with very little power dissipation. The device is also compatible with a range of voltages, so it can be used in a variety of applications.

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