AAT3155ITP-T1

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	DC DC Regulator
Topology:	Switched Capacitor (Charge Pump)
Internal Switch(s):	Yes
Number of Outputs:	4
Voltage - Supply (Min):	2.7V
Voltage - Supply (Max):	5.5V
Voltage - Output:	4.7V
Current - Output / Channel:	37.5mA
Frequency:	1MHz
Dimming:	S²Cwire
Applications:	Backlight, Camera Flash
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	12-TFSOJ (0.094", 2.40mm Width)
Supplier Device Package:	12-TSOPJW

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Introduction

The AAT3155ITP-T1 is a versatile AC/DC controller and driver IC specifically designed for driving light-emitting diodes (LEDs) in lighting systems such as grow lights, street lights, and automotive headlights. This PMIC - LED Driver is notable for its high level of integration, allowing the design of powerful and cost-effective lighting systems. In this article, we will discuss the application fields of the AAT3155ITP-T1, as well as its working principle.

Application Fields

The AAT3155ITP-T1 can be used in a variety of lighting systems, including grow lights, surface-mount ceiling lights, street lights, and automotive headlights. Additionally, it can be used in portable lighting solutions, such as flashlights and camping lights. This driver is also suitable for applications in signage and decorative lighting, as well as in the industrial and scientific sectors. The AAT3155ITP-T1 is an ideal solution for application fields where maximum component integration and reliability are required. It is capable of driving up to three series-connected LEDs, and offers several features that allow for precise control and efficient operation. These features include integrated linear current regulation, temperature monitoring and protection, dynamic switching, and high-frequency light modulation.

Working Principle

The AAT3155ITP-T1 uses a combined analog and digital power management architecture to provide efficient LED lighting. It incorporates two primary components: a voltage regulator and driver stage.The voltage regulator employs linear current regulation to maintain a consistent current through the LEDs. A feedback circuit monitors the output current to ensure that it remains within the specified range. The regulator also contains a temperature monitor that is capable of detecting excessive temperature increases in the LEDs, and adjusting the output current accordingly. The driver stage consists of a high-side power MOSFET switch, a static inductor, and a controller. The switch is used to control the LED current, while the inductor stores and releases energy as needed. The controller regulates the supply voltage and current, and implements dynamic switching, which allows for high-frequency light modulation. The AAT3155ITP-T1 is capable of driving up to three series-connected LEDs, and can be programmed to provide the exact level of brightness desired. It is also equipped with several protection features, including over-voltage protection, overload protection, and short-circuit protection.

Conclusion

To conclude, the AAT3155ITP-T1 is a versatile PMIC - LED driver designed for lighting applications. It features high levels of integration and reliability, and can be used in a variety of systems, including grow lights, surface-mount ceiling lights, street lights, and automotive headlights. Additionally, it offers several features that allow for precise control and efficient operation, such as linear current regulation, temperature monitoring and protection, dynamic switching, and high-frequency light modulation.

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