MAX16818ATI+T

Voltage - Output:	--
Base Part Number:	MAX16818
Supplier Device Package:	28-TQFN (5x5)
Package / Case:	28-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	125kHz ~ 1.5MHz
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	28V
Voltage - Supply (Min):	4.75V
Number of Outputs:	1
Internal Switch(s):	No
Topology:	SEPIC, Step-Down (Buck), Step-Up (Boost)
Type:	DC DC Controller
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to MAX16818 AT+T LED Driver

The MAX16818AT+T is part of Maxim Integrated\'s portfolio of Advanced Power Management ICs (PMICs), specifically targeted at LED (Light Emitting Diode) lighting applications. This device integrates one buck regulator, one boost regulator, one push-pull converter, as well as two 0.25A external power switches, all of which can be used to control six separate high efficiency and low current LEDs. The MAX16818AT+T has been designed for centralized power control in the following applications: automotive interior and exterior lighting systems, instrumentation lighting, appliance lighting, stadium lighting, and home theater/LCD visibility enhancement. The device also offers two-wire I2C serial interface, low power sleep mode operation, and onboard temperature sensing capabilities.

MAX16818AT+T Features and Benefits

The MAX16818AT+T is a highly efficient and feature-rich device that helps to optimize system performance and reduce design time and complexity in intelligent LED control applications. Features of the MAX16818AT+T include:

• Integrated LDO regulator that can provide a constant output voltage to LEDs
• Integrated push-pull/bootstrap converter that can provide up to 20mA/LED
• Integrated buck and boost regulators that can drive up to 8W/LED
• Integrated, programmable power switches that can drive up to 2A/LED
• Programmable, adaptive LED current control to limit LED brightness levels at various temperatures
• Onboard temperature sensing capability that ensures maximum LED lifetime
• Integrated I2C serial interface
• Power-saving sleep mode operation
• Operational temperature range of -40˚C to +140˚C

The MAX16818AT+T is ideal for applications requiring dimmable lighting in small, confined spaces, such as automotive and appliance lighting, instrumentation lighting, and stadium/home theater lighting.

Applications

MAX16818AT+T is a versatile device that can be used in a wide variety of applications. As mentioned above, the device is ideally suited for automotive and appliance lighting, instrumentation lighting, and stadium/home theater lighting. The device can also be used in other lighting applications such as LED strips, street lights, digital signage, and signage illumination. The device can also be used to control LED modules in which different colors of LEDs are combined to create interesting lighting effects.

Working Principle

The MAX16818AT+T is a highly integrated device that controls LED lighting through an I2C communications interface. The device includes six LED channels, each of which can be set independently to control the brightness and color of LEDs. Each LED channel is independently controlled by a driver circuit consisting of a buck regulator, a boost regulator, and a push-pull converter. The buck regulator is capable of delivering up to 8W/LED and the boost regulator is capable of delivering up to 20mA/LED. The output of the buck and boost regulators is connected to the output of the push-pull converter which can deliver up to 2A/LED.The MAX16818AT+T also includes a programmable power switch that can be used to control LED current up to a maximum of 2A/LED. This ensures that LEDs are supplied with the correct amount of current and maintains maximum LED performance. The MAX16818AT+T also includes a low power sleep mode, allowing for power savings when the LEDs are not in use. The device also incorporates an onboard temperature sensor that ensures that LEDs are operated within their specified temperature range. This ensures maximum LED lifetime.

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