LT3796EFE#PBF - 

DC/DC Controller, Constant Current, 5V to 100V, 1 Output, Buck, Boost, SEPIC, 1MHz, TSSOP-28


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Product Information

Buck, Boost, SEPIC
1 Output
MSL 1 - Unlimited
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Product Overview

The LT3796EFE#PBF is a 100V Constant-Current and Constant-Voltage Controller with dual current sense ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Two ground referred voltage FB pins serve as the input for several LED protection features and also allow the converter to operate as a constant-voltage source. The LT3796 features a programmable threshold output current sense amplifier with rail-to-rail common mode range. A separate high side amplifier is gain configurable with two resistors and can be used to regulate a second current or a voltage in combination with one of the FB pins. The PWM input provides LED dimming ratios of up to 3000:1. An internal current limit on the INTVCC output protects the LT3796 from excessive on-chip power dissipation. The minimum value of this current limit should be considered when choosing the switching N-channel MOSFET and the operating frequency.
  • 3000:1 True colour PWM™ dimming
  • Current monitoring up to 100V
  • High side PMOS disconnect and PWM switch driver
  • Constant-current and constant-voltage regulation
  • Dual current sense amplifiers with reporting
  • C/10 detection for battery and SuperCap charging
  • Linear current sense threshold programming
  • Short-circuit protection
  • 100kHz to 1MHz Adjustable frequency
  • Frequency synchronization
  • Programmable open LED protection with VMODE flag
  • Programmable under-voltage lockout with hysteresis
  • Soft-start with programmable fault restart timer


LED Lighting, Power Management

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