AAT3195IJQ-1-T1 Integrated Circuits (ICs)

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AAT3195IJQ-1-T1 is a current-regulating switch mode with a wide range of uses as a PMIC (Power Management and Integrated Circuit)LED Driver. It is capable of driving both white LEDs and colored LEDs in a wide variety of medium-to-high power applications. The deviceoffersthe user high efficiency and a low external part count, making it particularly attractive for use in portable electronics, vehicle lighting, and aviation applications.

AAT3195IJQ-1-T1 Application Field

The AAT3195IJQ-1-T1 is a switch-mode LED driver that is suitable for a variety of power LED lighting applications. It is capable of regulating LED current up to 3.2A, while maintaining LED brightness at a constant level despite wide variations in ambient temperature and input voltage. Due to its low external part count and high efficiency, it is ideal for use in automotive and aviation lighting, high output flashlights, outdoor security lighting, portable and handheld devices, as well as virtually any other applications requiring efficient and reliable LED lighting.

AAT3195IJQ-1-T1 Working Principle

The AAT3195IJQ-1-T1 operates off a wide input voltage range, allowing it to achieve a wide regulation range with few external components. Its high switching frequency provides excellent transient performance, enabling high accuracy LED current regulation. Its current-mode control architecture provides a high level of noise immunity, making it well-suited for applications that require low electromagnetic interference (EMI). For added convenience, the device supports an optional external dimming signal, allowing the LED current to be adjusted in a wide range from 0.04A to 3.2A.

The device\'s high efficiency comes from its internal power switching scheme, which uses a low-side bias scheme to ensure accurate and stable current regulation. The device incorporates an integrated power switch and a synchronous rectifier to minimize secondary-side power losses. The low-side bias scheme also helps minimize power dissipation at low-saturationvoltagessuch as current source. In addition, the device offers adjustable soft-start capabilities to reduce inrush current.

The AAT3195IJQ-1-T1 features an integrated 500 mV feedback voltage reference, which is used to adjust the LED current and control the LED brightness while providing accurate and stable current control. To reduce system power and to maximize efficiency, the device incorporates a low quiescent current design that maintains current flow in standby mode.

Finally, the device also includes a wide range of safety features, such as over-voltage and over-temperature protection, to ensure reliable and safe operation. In addition, for applications that require multiple LED strings, the device offers a 6-string regulated output capability for flexibility and maximum efficiency.

The AAT3195IJQ-1-T1 is a highly versatile and efficient switch-mode LED driver that is well-suited for a wide variety of medium-to-high power applications. With its low external component count, high efficiency, and a range of safety features, it provides reliable LED lighting in a wide range of applications, making it an ideal choice for automotive and aviation lighting, portable and handheld devices, flashlights, and outdoor security lighting.

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