AAT3177IWP-T1

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The AAT3177IWP-T1 is a high-efficiency DC-DC converter designed for driving LEDs from applications in the consumer electronics, automotive, industrial, and medical device markets. It integrates a combination of a programmable step-up DC-DC regulator, a programmable step-down current regulator, and a power-on reset circuit into a small 16-pin TSSOP package. The AAT3177IWP-T1 is suitable for driving low-voltage, low-current LEDs in series. The device can accept up to 36V and is capable of providing up to 150mA of current with a voltage accurate within ±0.3V.

The AAT3177IWP-T1 is part of the PMIC - LED Drivers family of devices. The device takes a low-voltage input and uses a DC-DC converter to increase the voltage to the level required by the LEDs. A low-resistance sense resistor is connected in series with the LEDs to provide feedback for accurate regulation of the LED current. The device is designed to provide a high level of efficiency, allowing the LED current to be accurately regulated with a minimum of power losses. The device can also be used for driving low-voltage, low-current LEDs in series, making it ideal for applications where space is at a premium.

The AAT3177IWP-T1 integrates a programmable step-up converter, a step-down current regulator, and a power-on reset circuit, all in a single package. The integrated step-up converter enables the device to accept inputs up to 36V and provides a regulated output voltage up to 40V, with very low output ripple. The step-down current regulator provides accurate regulation of the LED current, with a typical accuracy of ±0.3V and a wide range of currents from 25mA to 150mA. The power-on reset circuit ensures that the current regulator is always enabled, and prevents over-voltage or over-current conditions from damaging the LED. The device features a wide input voltage range (2.7V to 36V), allowing it to be used with many different types of LEDs.

The AAT3177IWP-T1 is designed to provide high efficiency, with a typical efficiency of 95% at 10mA. The device is designed to operate from a single cell Li-Ion battery and is backed by a wide temperature range (-40 °C to +85 °C). The device is also ESD-protected and is AEC-Q100 Qualified, making it suitable for automotive applications. Additionally, the device is RoHS-compliant and supports I²C communication protocols.

The AAT3177IWP-T1 is an ideal solution for driving LEDs in small applications, thanks to its small footprint, high efficiency, and wide temperature range. The device’s integrated step-up and step-down regulators, along with its power-on reset circuit, make it a convenient and cost-effective solution for driving low-voltage, low-current LEDs. The device is suitable for a wide range of applications in the consumer electronics, automotive, industrial, and medical device markets.

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