AS1101-T Integrated Circuits (ICs)

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The AS1101-T is a configurable, intelligent LED driver from ams. The device is optimized for use in portable applications requiring power and voltage levels up to 18V and is compliant with the I2C protocol for direct use and control in the most demanding applications. It is often used for LED backlighting in displays and general illumination applications, as well as LED indicator and headlights.

The device is specifically designed to reduce need for external components and hassle of current balancing without compromising performance. With a 120MHz I2C interface, the AS1101-T can be quickly integrated into a wide range of applications.

Features of the AS1101-T

The AS1101-T offers a host of features for LED drivers. These include:

1. High-efficiency, advanced motor-control circuitry for current regulation in demanding applications.
2. In-package dimming additional cost and board space over other solutions.
3. High supply voltage tolerance of – 18V to +18V, with power dissipation of up to 500 mW to make it suitable for the most demanding applications.
4. Adaptive slew-rate control making the AS1101-T suitable for a wide range of applications, providing an 80kHz or 400 kHz PWM signal.
5. High-performance current regulation algorithm eliminates need for precision external components and saves thermal loss, weight, and cost.
6. Optional feedback powering and dimming through I2C.
7. Ultra-low-current shutdown to protect the device during power-down mode.
8. Configurable number of channels (up to 16) for parallel connection of multiple LEDs.

Working Principle of the AS1101-T

The AS1101-T uses an advanced motor-control circuitry for current regulation, allowing for high-efficiency operation with less heat dissipation and better heat management in demanding applications. Due to its 120MHz I2C interface, the device can be quickly integrated into a wide range of applications and quickly adjusted for voltage levels up to 19V.

The device supports on-the-fly dimming using PWM signals or using analog voltage via the internal feedback port and the I2C interface. For extra convenience, the AS1101-T also provides a low-current shutdown mode to protect the device during power-down mode and support the configurable number of channels (up to 16) for parallel connection of multiple LEDs.

Applications

The AS1101-T is used for portable applications requiring power and voltage levels up to 18V and higher. The device is ideal for use in portable applications due to its low-voltage and current regulation features. In particular, it is often used for LED backlighting in displays and general illumination applications, as well as LED indicator and headlights.

The device is also suitable for applications such as automotive, building, home and portable devices due to its adjustable pulse width modulation signals, internal feedback and shutdown feature. The AS1101-T is designed to reduce cost and board space while still providing maximum performance, making it an ideal choice for LED drivers.

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