AP3019AKTR-G1

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The AP3019AKTR-G1 is a low-voltage, low-power, high-performance, three-channel current source controller IC designed to drive light emitting diodes (LEDs). It is part of a larger family of PMIC (Power Management Integrated Circuit) products that are categorized as LED drivers. As such, this highly integrated control IC can be used to regulate current in the three channels, allowing for the development of LED driver circuits with improved efficiency and smaller size.

Operating at a low voltage of 1.2 to 3.6V, the AP3019AKTR-G1 offers multiple features for LED-driver applications including current-sink and current-source modes, programmable current limiting, soft-start and current-limiting modes, thermal protection, active-loop and ramp-up/down times. It can also serve as a low-dropout (LDO) regulator when connected to a secondary external regulator, allowing it to be used in many power management applications.

The basic operation of the AP3019AKTR-G1 is to provide a regulated output current to three separate channels. The current source input can be selected via a logic input pin and an external resistor to set the voltage reference. The output current is set by an external resistor and the maximum current can be limited using a single external resistor. It also features an adjustable soft-start time that is used to ramp up the output current over a specific duration, allowing the output current to be regulated according to the desired profile.

The AP3019AKTR-G1 can also be used in multiple applications including camera flash, mobile backlighting, and indicator light circuits. In mobile backlighting, the current can be reduced or increased with the system’s changing brightness requirements. The IC has a wide input voltage range of 1.2 to 3.6V and offers temperature sensing and thermal-shutdown protection to prevent over-heating. The current limit feature also helps to protect the output circuitry from excessive current.

In addition to its primary application field of LED drivers, the AP3019AKTR-G1 can also be used in many other power management applications. For example, it can be used as a low-voltage, low-power LDO regulator when connected to a secondary external regulator. It can also be used to regulate current in audio, motor control, and display backlighting circuits, among others.

In summary, the AP3019AKTR-G1 is an advanced PMIC that is part of a larger family of LED drivers designed to provide exceptional efficiency and size reduction in LED applications. It offers current sink and current source modes, programmable current limiting, soft-start and current-limiting modes, temperature sensing, and thermal shutdown protection. It can also be used in many other applications such as low-voltage LDO regulators, audio, motor control, and display backlighting circuits.

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