TPS61050DRCT

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The TPS61050DRCT is an integrated pulse-width modulation (PWM) and linear current regulator IC, is featured by its wide 3.2V to 28V input voltage range and its capability of driving up to five white LEDs and four RGB LEDs. It is intended for paintcoat auto lighting applications, especially aftermarket.

The TPS61050DRCT is primarily used in applications in which a monolithic device is desired to control the colors and brightness level of multiple LEDs. This device is well suited for applications where space is limited, such as LCD backlighting, LCD panel backlighting, and aftermarket automotive headlight applications. It can be used to drive both DC and AC powered LEDs.

The TPS61050DRCT contains an adjustable current-source, with average current of up to 1A for an RGB LED, a voltage-mode pulse-width modulation (PWM) controller, and an integrated adjustable error amplifier. It has a dimming capability for PWM dimming, which is available for both forward and reverse phase dimming. This device also provides an LED open detection circuit and an LED over-voltage protection circuit.

The wide input voltage range of 3.2V to 28V makes the TPS61050DRCT suitable for many applications. The adjustable current-source provides a low ripple output current, making the device suitable for a wide range of LED types and colors. The adjustable error amplifier allows the device to be adjusted to various LED current levels and LED forward voltage levels.

The TPS61050DRCT also features an integrated voltage-mode PWM controller, which can be used to drive an external MOSFET or a bipolar transistor in a DC to DC converter configuration. The PWM controller provides high-frequency switch-mode operation for efficiency and small size. It also allows for dimming of LEDs using PWM dimming techniques.

In addition to the current-source, PWM controller, and error amplifier, the TPS61050DRCT also includes an LED open detection circuit and an LED over-voltage protection circuit. The LED open detection circuit monitors the output current of the device and turns off the LEDs if an open circuit is detected. The LED over-voltage protection circuit continuously monitors the LED forward voltage rail and shuts down the TPS61050DRCT if the rail voltage exceeds its normal operating range.

In summary, the TPS61050DRCT can be used in a wide variety of applications, such as LCD backlighting, LCD panel backlighting, and aftermarket automotive headlight applications. It is suitable for driving both DC and AC powered LEDs, and it has an adjustable current source, voltage-mode PWM controller, integrated adjustable error amplifier, LED open detection circuit, and LED over-voltage protection circuit.

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