LT3760EFE#TRPBF

LT®3760 is an 8-channel LED driver with a step-up DC/DC controller capable of driving up to 45V of LED. Each channel contains an accurate current sink with ±2% current matching. Channels follow a host programmable current to allow between 20mA to 100mA of LED current per string. Channels can be paralleled for higher LED current. Output voltage adapts to variations in LED VF for optimum efficiency and open LED faults do not affect the operation of connected LED strings. This allows a PWM dimming range of up to 3000:1 and an analogue dimming range of up to 25:1. Operating frequency can be programmed from 100KHz up to 1MHz using a single resistor or synchronized to an external clock. Application includes automotive, notebook and TV monitor backlighting.

• Up to 3000:1 true colour PWM™ dimming range
• LED current regulated even for PVIN <gt/> VOUT, output adapts to LED VF for optimum efficiency
• Fault flag + protection for open LED strings, protection for LED pin to VOUT short
• Parallel channels for higher LED current, programmable LED current derating vs temperature
• Accurate undervoltage lockout threshold with programmable hysteresis
• Synchronizable to an external clock
• Operational VIN range from 4.5 to 13V (TA = 25°C), typ VREF voltage is 1.48V (IVREF = 0µA)
• Typical voltage gain (OVP) is 5V/V (TA = 25°C)
• 28-lead plastic TSSOP package
• Temperature rating range from -40°C to 125°C

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