BD83732HFP-MTR

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BD83732HFP-MTR application field and working principle

The BD83732HFP-MTR from Renesas is a high-efficiency LED driver IC dedicated for automotive lighting. It is a high-voltage current control, easy-to-use LED drive control IC with many functions like linear dimming or 1-PWM analog dimming. It features an integrated transconductance output stage, a linear dimming voltage reference, and an adjustable positive feedback between the LED current limit and the voltage reference.

The BD83732HFP-MTR is designed to replace conventional mechanical LEDs with a more cost-effective, efficient, and reliable solution. It can run up to 1,000mA of LED current and up to 50V of LED voltage. It has built-in thermal shutdown protection, over-voltage protection, soft-start, and over-temperature protection. It also has an internal oscillator for adjustable frequency and adjustable dimming.

The BD83732HFP-MTR is suitable for automotive lighting applications such as headlamps, tail lamps, and auxiliary lamps. It is also suitable for other LED driving applications such as LCD backlights and industrial lighting. The IC operates at a supply voltage from 8 V to 50 V, allowing it to be powered from wide input sources.

Features

• Integrated linear dimming voltage reference (5 V)
• Integrated transconductance output stage
• Adjustable positive feedback between LED current limit and voltage reference
• Over-temperature protection and thermal shutdown protection
• Soft-start and over-voltage protection
• Integrated oscillator with adjustable frequency and adjustable dimming
• Operates from 8 V to 50 V supply voltage
• Supports up to 1,000mA of LED current and up to 50 V of LED voltage

Working Principle

The BD83732HFP-MTR uses an integrated transconductance output stage to convert the reference voltage to a controlled current. The reference voltage is generated by the internal linear dimming voltage reference. The linear dimming voltage reference has an adjustable positive feedback between the LED current limit and the voltage reference. This feedback is used to adjust the LED current in order to achieve the desired brightness level.

The BD83732HFP-MTR also has an integrated oscillator with adjustable frequency and adjustable dimming. This oscillator can be used to generate a low-frequency PWM signal that can be used to dim the LED intensity. The IC also provides a built-in thermal shutdown protection, over-voltage protection, soft-start, and over-temperature protection. This ensures the stability and reliability of the LED.

Overall, the BD83732HFP-MTR from Renesas is a high-efficiency LED driver IC dedicated for automotive lighting. It is a high-voltage current control, easy-to-use LED drive control IC suitable for a wide range of applications including automotive lighting, LCD backlights, and industrial lighting.

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