MAX6967AEE+ Integrated Circuits (ICs)

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The MAX6967AEE+ PMIC LED drivers are device controllers used to drive LEDs in lighting applications such as stadium lighting, street lighting, and even industrial lighting. They offer single-chip solutions that reduce design complexity and reduce system cost. The device provides direct control of a single LED strand up to 15 LEDs in a single strand. It provides an adjustable current level from 0.1 to 200mA, full dimming control to 0.3%, and six LED current sources for multi-die LED solutions.

The MAX6967AEE+ is an 8-pin device that works based on an enhanced Active Edge-Lit (EEL) topology. It is a cost-effective, efficient, and accurate way of driving LEDs in automotive or directional lighting applications. It uses an external FET-based current source to adjust the LED drive current. The current source is configured in an open-loop configuration without feedback. This means that the circuitry is simple, making it easier to implement. The output current is adjustable from 0.1mA up to 200mA with a 0.2mA step resolution using an externally adjustable resistor.

The EEL topology includes a digitally programmable internal voltage regulator, a voltage-controlled oscillator, an edge-lit current source, and a linear boost regulator. The device has a minimum startup voltage of 0.2V and a maximum Saturation Voltage of 1V. This makes it suitable for low voltage applications such as automotive and lighting applications. The device also has an internal soft-start feature, which ensures in-rush current control and reduces total system cost.

The MAX6967AEE+ also has a programmable slew-rate setting. Slew rate is the rate at which the output current changes. The adjustable slew rate allows for smooth dimming and color mixing. There is also an auto-restart feature, which ensures that the LEDs always start up in the specified current level for each color. This eliminates the need for added circuitry for soft-start, and it also eliminates the possibility of flickering or incorrect illumination.

The MAX6967AEE+ device also contains a slew-rate limiter to protect against over-driving the LEDs. The device includes a thermal shutdown feature, which limits the power dissipation. In addition, the device provides a built-in voltage regulator, which can be used to power an external IC or other components with a 5V or 3.3V supply voltage. This eliminates the need for an external regulator.

The MAX6967AEE+ PMIC LED driver is a great choice for lighting applications that require precise current control. It is cost-effective and efficient, and it eliminates the need for complex external circuitry. Additionally, the device includes features such as programmable slew-rate settings, thermal shutdown, and voltage regulation which make it an ideal choice for lighting applications.

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