LTC3459EDCB#TRPBF

LTC3459EDCB#TRPBF is a low-current, high-efficiency synchronous boost converter intended for low-power, size-constrained portable applications. The LTC3459 can be powered from a single lithium-ion battery, a 2- to 3-cell stack of alkaline or nickel batteries, or any low-impedance voltage source between 1.5V and 5.5V. The output is programmable via an external divider between 2.5V and 10V. Although the part is primarily intended for boost applications, VOUT will maintain regulation below VIN (albeit at reduced efficiency). It offers Burst Mode operation with a fixed peak current, providing high conversion efficiency over a wide range of load currents. During start-up, inductor current is controlled, preventing the inrush surge current found in many boost converters. Applications include general-purpose micropower boost, digital cameras, PDAs, LCD bias, small OLED displays, and supercap charging.

• Internal synchronous rectifier, VIN range from 1.5V to 5.5V
• Burst Mode® operation, inrush current limiting, output disconnect in shutdown
• VIN quiescent current is 10μA typical at (active-low SHDN = VCC, TA = 25°C)
• VIN shutdown current is 0.1μA typical at (active-low SHDN = GND, TA = 25°C)
• NMOS switch on-resistance is 2.8 ohm typical at (VOUT = 5V, TA = 25°C)
• FB input leakage current is 10nA typical at (TA = 25°C)
• Feedback voltage is 1.22V typical at (VIN = 3.3V, VOUT = 7.5V)
• 75mA typical peak switch current (VIN = 3.3V) at (L = 22μH)
• Operating temperature range from -40°C to 85°C
• 6-lead plastic DFN package

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