LT3909HMSE#TRPBF

Voltage - Output:	40V
Base Part Number:	LT3909
Supplier Device Package:	12-MSOP-EP
Package / Case:	12-TSSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Applications:	Automotive
Dimming:	Analog, PWM
Frequency:	2MHz
Current - Output / Channel:	50mA
Series:	--
Voltage - Supply (Max):	40V
Voltage - Supply (Min):	2.9V
Number of Outputs:	2
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LT3909HMSE#TRPBF is a powerful and versatile device that can be used in a wide range of LEDs and lighting systems. This product is developed by Linear Technology, designed to improve the reliability and efficiency of LED light sources. It is a dedicated device for driving high brightness, large current LEDs and provides small size, energy efficient, and advanced features.LT3909HMSE#TRPBF is classified as a PMIC (Power Management Integrated Circuit) device, specifically a LED driver typically used in systems that require high reliability, efficiency, or optical accuracy for their light sources. With its many features, the LT3909HMSE#TRPBF makes it ideal for applications such as automotive, industrial and outdoor lighting, entertainment systems, smart lighting, architectural lighting effects, and general illumination applications.The LT3909HMSE#TRPBF is an efficient and accurate LED driver that provides a low ripple on/off state with low cross regulation. This integrated circuit can be configured to drive up to 8 LEDs in parallel or 8 LEDs in constant current modes. Furthermore, it contains thermal, short-circuit, and UVLO (Under Voltage Lock Out) protection.The LT3909HMSE#TRPBF LED driver has two main operating modes: Constant Current (CC) and Pulse Width Modulation (PWM). The CC mode may be used to drive LEDs in applications requiring constant illumination such as thin-film display backlights. The PWM mode is used to control LED brightness in applications such as dimming, color changing, and fade in/out effects in a wide range of entertainment and commercial lighting systems.The device has two main parts—the internal boost power supply and the external LED bridge circuits. The boost power supply handles the power management, controlling the input voltage, providing the charge pump, and monitoring. It also contains an internal oscillator that allows for the selection of desired frequency for the PWM mode.The external LED bridge circuits are responsible for driving and controlling the LEDs. These circuits contain a dimmer, current sensor, voltage regulator, and switch network. The dimmer can be programmed via Pulse Width Modulation (PWM) to regulate the brightness of the LEDs, while the current sensing and voltage regulator ensure that the current and voltage in the system remain within a safe range.The combined performance of the boost power supply and LED bridge circuits make the LT3909HMSE#TRPBF an ideal device for high brightness LED applications. It is capable of high efficiency, low ripple on/off state with low cross regulation, and accurate, dynamic control of LED brightness.In conclusion, LT3909HMSE#TRPBF is an efficient and reliable device for driving high brightness LEDs. It is designed for PMIC applications that require high reliability, accuracy, or efficiency from their light sources. This integrated circuit can be configured to drive up to 8 LEDs in parallel or 8 LEDs in constant current mode, with features such as thermal, short circuit, and UVLO protection. With its two main operating modes, the CC and PWM, the LT3909HMSE#TRPBF makes it a perfect LED driver for a wide range of LED lighting applications.

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