Linear Technology LT3599
The LT3599 accurately regulates LED current even when the input voltage is higher than the LED output voltage. The LT3599 is available in the thermally enhanced 32-pin (5mm × 5mm) QFN and 28-pin TSSOP packages.| Part No. | LT3599 |
|---|---|
| Datasheet | LT3599 Download |
| Manufacturer |  Linear Technology |
| Description | 4-String 120mA LED Driver |
| Buy | Stock & Price |
FEATURES
DESCRIPTION
nn True Color PWMTM Dimming Ratio Up to 3000:1 nn Drives Four Strings of LEDs at Up to 120mA nn ±1.5% Accurate LED Current Matching nn Wide Input Voltage Range: 3.1V to 30V nn Output Voltage Up to 44V nn Regulates LED Current Even When VIN > VOUT nn Disconnects LEDs in Shutdown nn Programmable Maximum VOUT (Regulated) nn Open/Short LED Protection and Fault Flags nn Programmable LED Current Derating nn Adjustable Frequency: 200kHz to 2.1MHz nn Synchronizable to an External Clock nn Analog Dimming Up to 20:1 nn Programmable Input UVLO with Hysteresis nn Thermally Enhanced 32-Pin (5mm × 5mm) QFN and 28-Pin TSSOP PackagesAPPLICATIONS
nn Automotive Navigation TFT LCD Displays nn Desktop and Notebook TFT LCD Displays The LT®3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. LED dimming can be achieved with analog dimming on the CTRL pin, and with pulse width modulation dimming on the PWM pin.
