LT3494EDDB#TRPBF

LT®3494 is a low noise boost converter with an integrated power switch, schottky diode, and output disconnect circuitry. The part uses a novel control technique resulting in low output voltage ripple as well as high efficiency over a wide load current range. This technique guarantees that the switching frequency stays above the audio band for the entire load range. The part features a high-performance NPN power switch with a 350mA and 180mA current limit respectively. The quiescent current is a low 65μA, which is further reduced to less than 1μA in shutdown. The internal disconnect circuitry allows the output voltage to be isolated from the input during the shutdown. Application includes OLED power, low noise power, MP3 players.

• Integrated output dimming
• Minimum operating voltage is 2.5V (TA = 25°C, VIN = 3V, maximum)
• Typical feedback voltage is 1.225V (VCTRL = 3V, TA = 25°C)
• Typical FB resistor is 182Kohm (TA = 25°C, VCC = 3V)
• Typical quiescent current is 65μA (not switching, TA = 25°C, VCC = 3V)
• Typical minimum switch off time is 100ns (after start-up mode, VFB = 1V, TA = 25°C)
• Typical switch current limit is 110mA (TA = 25°C, VCC = 3V)
• 8-lead plastic DFN package
• Operating temperature rating range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party