TPS61161QDRVRQ1

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The TPS61161QDRVRQ1 is a member of a modern series of LED drivers from Texas Instruments. Advanced LED drivers like this one are ideal for LED lighting applications from indoor to outdoor locations, such as homes and businesses, restaurants, and public spaces. These LED drivers offer robust and reliable operation, high efficiency, and wide dimming ranges for power management.

The TPS61161QDRVRQ1 is one of the leading devices available in the market today. It operates as a linear current regulator and requires only a current-sense amplifier, a simple feedback loop, and an external transistor to provide a reliable, high efficiency LED current control. This type of driver can be used in a wide range of applications such as automotive lighting, backlighting systems, industrial lighting, and street and area lighting.

The TPS61161QDRVRQ1 offers a wide range of operating features. For example, its output current can be adjusted either linearly or in basic binary manner, and its maximum current limit is adjustable. It also includes a dimming stop circuit that prevents dimming to values lower than the desired minimum current value. Additionally, it is capable of sensing open and short circuited LEDs and has integrated thermal shut down in order that the device can be used safely.

The TPS61161QDRVRQ1 utilizes a switching and linear operating principle. The device uses a pulse-width modulation technique, an internal slow turn-on circuit, and an adjustable inductor current limit to achieve high efficiency. When a PWM signal is applied, a dc voltage is provided at the output node. During the on-time of the PWM signal, the inductor current increases, until it reaches a maximum limit determined by the selected inductor\'s ripple current. Then, a linear regulator takes control to maintain the output current.

In order to gain maximum efficiency, the TPS61161QDRVRQ1 utilizes synchronous rectification MOSFETs to minimize the power dissipated at the Pass Device output. An internal oscillator is used to turn the rectifying MOSFETs on and off in order to generate the dc output voltage, which is regulated by the onboard linear regulator.

The TPS61161QDRVRQ1 provides various protections to enable reliable operation. It includes a dimming stop circuit with an adjustable power limit and a soft-start circuit for over-current protection. Additionally, current sense amplifiers are used to monitor the output current of the circuit, and both open and shorted LED circuits are detected. When any of these conditions are exceeded, the device will shut down to prevent damage.

The TPS61161QDRVRQ1 is a powerful and reliable LED driver device from Texas Instruments, suitable for a wide range of applications from automotive lighting to backlighting systems. Its linear current regulator and various protection circuits, coupled with its wide dimming range, make it an ideal choice for efficient power management in LED lighting applications.

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