AP3031MTR-G1

Voltage - Output:	--
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	1MHz
Current - Output / Channel:	1.4A (Switch)
Series:	--
Voltage - Supply (Max):	16V
Voltage - Supply (Min):	2.7V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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AP3031MTR-G1 OverviewThe AP3031MTR-G1 is a high efficiency, low quiescent current, and dual-channel LED driver integrated circuit (IC). It is designed to drive up to 5.8A per channel in open loop (OL) applications. This IC contains two 609 mΩ internal MOSFETs and is capable of driving a range of LEDs including large area and multiple die high power white LEDs in series/parallel topologies.The AP3031MTR-G1 also incorporates a wide dynamic range light sensor with an adjustable calibration point, enabling an adaptive current control using the PWM dimming input. The controller helps maintain consistent LED brightness in a range of input voltages. The controller also has overvoltage and overcurrent protection features to enhance the driver’s reliability.ApplicationsThe AP3031MTR-G1 is ideal for LED lighting applications such as automotive lighting, LCD backlight, and general purpose lighting. It includes thermal shutdown, PWM dimming with integrated light sensor, and cycle-by-cycle current limiting functions.It also offers various types of LED backlight solutions including single-channel, multiple-channel, and parallel LED combinations. The single-channel LED driver provides constant-current output on one channel to drive one LED. The multiple-channel LED driver has two channels that can be controlled independently, enabling both dimming and automatic brightness adaptation. Lastly, the parallel LED driver can be used in applications such as LED displays, where multiple LEDs need to be driven in parallel.The AP3031MTR-G1 is a polarized LED driver and can operate with input voltages as low as 0.75V and power LED’s up to 36V, making it suitable for a wide range of LED lighting requirements.Working PrincipleThe AP3031MTR-G1 is a dual channel LED driver with a wide dynamic range light sensor and adjustable calibration point. It provides a constant current source, with overvoltage and overcurrent protection, for driving high power white LEDs in open-loop or closed-loop applications.The controller contains two 609mΩ MOSFETs to drive the LEDs. When the voltage at the gate of the MOSFET rises, the internal current source increases the current to the circuit and the LED. The current is limited by the onboard current sense resistor and can be adjusted through the PWM input.When the PWM input is low, the current to the LEDs is kept constant, while when the PWM input is high, the current flows through the light sensing circuit and is adjusted depending on the light level. This enables the IC to maintain the LED brightness in a range of input voltage levels.The AP3031MTR-G1 is a highly efficient LED driver with a wide dynamic range, adjustable calibration point and overvoltage and overcurrent protection. It can be used for a variety of LED lighting applications and is ideal for automotive lighting and LCD backlight applications. The two 609mΩ MOSFETs enable the IC to drive high power white LEDs in series/parallel topologies and the corresponding current can be adjusted with the PWM dimming input. The wide dynamic range light sensor with adjustable calibration point enable the driver to maintain a consistent LED brightness in a wide range of input voltages.

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