LT1618EMS#TRPBF

LT®1618 is a step-up DC/DC converter combines a traditional voltage feedback loop and a unique current feedback loop to operate as a constant-current, constant-voltage source. This fixed frequency, current mode switcher operates from a wide input voltage range of 1.6V to 18V, and the high switching frequency of 1.4MHz permits the use of tiny, low profile inductors and capacitors. The current sense voltage is set at 50mV and can be adjusted using the IADJ pin. Typical applications are LED backlight drivers, USB powered boost/SEPIC converters, input current limited boost/SEPIC converters, battery chargers.

• Accurate input/output current control: ±5% over temperature
• Accurate output voltage control is ±1%, 1.4MHz switching frequency
• Low VCESAT switch is 200mV at 1A
• Input voltage range from 1.6 to 18V
• Reference voltage range from 1.250 to 1.276V (measured at FB pin, TA=25°C. VIN=1.6V, VSHDN=1.6V)
• Reference voltage line regulation is 0.03%/V max (1.6V<lt/>VIN<lt/>18V, TA=25°C. VIN=1.6V, VSHDN=1.6V)
• Switch current limit range from 1.5 to 2.8A (TA=25°C. VIN=1.6V, VSHDN=1.6V)
• 10-lead plastic MSOP package
• Operating temperature 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