LT3761IMSE#PBF

Series:	True Color PWM™
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	DC DC Controller
Topology:	Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)
Internal Switch(s):	No
Number of Outputs:	1
Voltage - Supply (Min):	4.5V
Voltage - Supply (Max):	60V
Voltage - Output:	--
Current - Output / Channel:	--
Frequency:	100kHz ~ 1MHz
Dimming:	Analog, PWM
Applications:	--
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package:	16-MSOP-EP
Base Part Number:	LT3761

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Introduction to LT3761IMSE#PBF

LT3761IMSE#PBF is a PMIC, or power management integrated circuit, that has been specifically designed to function as an LED driver. It has the capability to drive up to four LED channels with a maximum output current of 1.2A per channel. It features wide input voltage range, low dynamic and static current draw, and programmable current limits that make it a great solution for driving multiple LED channels from a single IC.

Application Fields of the LT3761IMSE#PBF

The LT3761IMSE#PBF PMIC can be used for a wide range of applications, including:

• General lighting, including residential, commercial and architectural lighting.
• Industrial and machine vision applications.
• Vehicle interior and exterior lights, including running lights and interior cabin lights.
• Medical device lighting.

The LT3761IMSE#PBF is particularly suited to applications that require the efficient control of multiple LED channels, including “washing” light applications, in which the LED channels are dimmed and strobed in quick succession.

The Working Principle of the LT3761IMSE#PBF

The LT3761IMSE#PBF LED Driver is a highly integrated PMIC that combines an integrated constant frequency, peak current mode controller, along with four output current regulators and four independent LED current limiters. The integrated peak current mode controller provides excellent stability and line and load regulation with very low dynamic and static current draw.The operating principle of the LT3761IMSE#PBF is based on a regulated current sink. The output current from the current regulator is monitored by an open loop error amplifier and compared to the programmed current limit. When the value of the regulated current sink exceeds the programmed current limit, the error amplifier reduces the reference voltage applied to the current regulator, causing the LED current to be regulated within the desired range.The LT3761IMSE#PBF is capable of driving up to four independent LED channels, each with a maximum output current of up to 1.2A. The maximum output current is adjustable via external resistors, and the output current is limited by an external current controller. The voltage output of the led driver can be set between 4V and 37V, and the device is also capable of operating over a wide input voltage range (6.5V to 40V).

Conclusion

The LT3761IMSE#PBF is a powerful PMIC system that is specifically designed for driving multiple LED channels efficiently and reliably. With its wide input voltage range and adjustable current limits, the LT3761IMSE#PBF is an ideal choice for most LED driver applications.

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