LT3796 Datasheet | Linear Technology

Features n 3000:1 True Color PWM™ Dimming n Wide Input Voltage Range: 6V to 100V n Current Monitoring Up to 100V n High Side PMOS Disconnect and PWM Switch Driver n Constant-Current and Constant-Voltage Regulation n Dual Current Sense Amplifiers with Reporting n C/10 Detection for Battery and Super Cap Charging n Linear Current Sense Threshold Programming n Short-Circuit Protection n Adjustable Frequency: 100k Hz to 1MHz n Frequency Synchronization (LT3796) n Independent Top Gate Enable Pin (LT3796-1) n Programmable Open LED Protection with VMODE Flag n Programmable Undervoltage Lockout with Hysteresis n Soft-Start with Programmable Fault Restart Timer n Available in 28-Lead TSSOP Package Applications n High Power LED, High Voltage LED, Dual String n Battery and Super Cap Chargers n Accurate Current Limited Voltage Regulators LT3796/LT3796-1 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense Description The LT®3796/LT3796-1 are DC/DC controllers designed to regulate a constant-current or constant-voltage and are 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/LT3796-1 feature a programmable threshold output current sense amplifier with rail-to-rail mon 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 bination with one of the FB pins. The PWM input provides LED dimming ratios of up to 3000:1. The LT3796-1 is optimized for a second output current regulation loop that can be enabled/disabled with a PMOS switch, either to drive a second LED string or to extend analog dimming range. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and True...