LM3448-EDSNEV/NOPB

Series:	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Current - Output / Channel:	181mA
Moisture Sensitivity Level (MSL):	--
Outputs and Type:	1, Non-Isolated
Voltage - Output:	36V
Features:	Dimmable
Voltage - Input:	85 ~ 135 VAC
Supplied Contents:	Board(s)
Utilized IC / Part:	LM3448

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The LM3448-EDSNEV/NOPB is an integrated LED driver for evaluation board use. It is designed for high-power applications such as automotive headlight and rearview mirror assemblies, indoor and outdoor lighting systems, and office lighting. The device integrates a high-accuracy buck converter, a DC-DC boost converter, and a configurable MOSFET buck driver for controlling white-light LEDs. Additionally, the device is capable of providing constant output current with steady state and transient accuracy to help reduce power dissipation, enhance performance, and improve overall system efficiency.Application FieldThe LM3448-EDSNEV/NOPB is suitable for automotive lighting, indoor and outdoor lighting, and office lighting applications. It is particularly beneficial in applications where high power inputs are necessary, such as automotive headlight and rearview mirror assemblies, as the device can provide the desired output current while consuming less power. Additionally, the device can be used to provide a constant output current with steady state and transient accuracy, allowing for improved performance and efficiency.Working PrincipleThe LM3448-EDSNEV/NOPB consists of a high-accuracy buck converter, a DC-DC boost converter, and a configurable MOSFET buck driver. The buck converter uses a flyback topology, which allows for a wide input voltage range and low output voltage ripple. The boost converter provides the necessary high voltage output to drive the white-light LEDs. The MOSFET buck driver acts as a switch to enable constant output current with steady state and transient accuracy.The device features a programmable current limit feature that allows for precise current control. The programmable current limit feature helps to reduce the effect of over-temperature and over-voltage conditions, and can be used to protect the device from possible damage. The device also features an open-drain enable signal that can be used to enable/disable the output voltage.ConclusionThe LM3448-EDSNEV/NOPB evaluation board is an integrated LED driver with a wide input range and low output voltage ripple. It is designed for high power applications such as automotive headlight and rearview mirror assemblies, indoor and outdoor lighting systems, and office lighting. The device integrates a high-accuracy buck converter, a DC-DC boost converter, and a configurable MOSFET buck driver for controlling white-light LEDs. Additionally, the device is capable of providing constant output current with steady state and transient accuracy to help reduce power dissipation, enhance performance, and improve overall system efficiency.

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