LT3599Quad 120mA LED driver with ±1.5% current matching accuracy
peculiarity
-
Up3000:1targetTrue Color PWMTMDimming ratio
-
With up to120mAof current drive4skewerLED
-
Accuracy±1.5%targetLEDCurrent matching
-
Wide input voltage range:3.1Vreach30V
-
The output voltage is up to44V
-
Even inVIN> VOUTcan also be adjusted under conditionsLEDcurrent
-
Disconnect in shutdown modeLED
-
Programmable maximumVOUT(Adjusted)
-
Open/short circuitLEDProtection and fault flags
-
ProgrammableLEDCurrent derating
-
Adjustable frequency:200kHzreach2.1MHz
- Can be synchronized to an external clock
-
Analog dimming Gundam20:1
-
Programmable input with hysteresisUVLO
-
Heat resistance enhancement32Pins(5mm x 5mm) QFNand28PinsTSSOPencapsulation
description
LT®The 3599 is a fixed frequency, 2A step-up DC/DCconverter, designed to drive four strings of 120mA LEDs with an output voltage up to 44V. The switching frequency can be programmed from 200kHz to 2.1MHz with an external resistor.
The LED dimming function can be implemented using analog dimming circuitry on the CTRL pin and pulse-width modulation dimming circuitry on the PWM pin. The LT3599 accurately regulates LED current, even when the input voltage is higher than the LED output voltage.
Other features include programmable LED current derating, switching frequency synchronization to an external clock, LED string disable control,OPENLEDAlarm pins,SHORTLEDProgrammable maximum output voltage for alarm pins and when all LED strings are disconnected. The LT3599 is available in thermally enhanced 32-lead (5mm × 5mm) QFN and 28-lead TSSOP packages
apply
- Car navigation TFT LCD display
- Desktop and laptop TFT-LCD monitors