LT LT3795HFE#TRPBF

DC DC 控制器4.5V110V

Overview

The LT3795HFE#TRPBF is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Spread spectrum frequency modulation (SSFM) can be activated for improved electromagnetic compatibility (EMC) performance. The ground referred voltage FB pin serves as the input for several LED protection features, and also allows the converter to operate as a constant-voltage source. The maximum output current is set by an external resistor, and the output current amplifier has a rail-to-rail common mode range. The LT3795HFE#TRPBF also includes a separate input current sensing amplifier that is used to limit input current. The TG pin inverts and level shifts the PWM signal to drive the gate of the external PMOS. The PWM input provides LED dimming ratios of up to 3000:1, and the CTRL inputs provide additional analog dimming capability.

Features

Tape & Reel (TR) Package
Available in the 28-TSSOP (0.173, 4.40mm Width) Exposed Pad package
Operating temperature of -40°C~150°C TJ
Frequency of 100kHz~1MHz
Supply voltage of 24V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT3795HFE#TRPBF LED Driver ICs applications.

• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting
• Down lights