LTC3534EGN#PBF

LTC3534 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for multi-cell Alkaline/NiMH or single Lithium-Ion/Polymer applications where the output voltage is within the battery voltage range. Burst mode operation is user controlled and can be enabled by driving the PWM pin low. If the PWM pin is driven high then fixed frequency switching is enabled. Other features include fixed 1MHz operating frequency, a 1µA shutdown, short-circuit protection, programmable soft-start, current limit and thermal overload protection. It is used in application such as medical instruments, portable barcode readers, portable inventory terminals, USB to 5V supply, handheld GPS etc.

• Input voltage range is 2.4V to 7V
• Output voltage range is 1.8V to 7V
• 5V VOUT at 500mA from 4 AA cells
• Single inductor, output disconnect in shutdown
• VIN quiescent current (Burst mode operation) is 25µA typical at (VFB = 1.2V, VPWM = 0V)
• Feedback voltage is 1V typical
• Input current limit is 1.8V typical
• Maximum duty cycle is 85% typical
• Operating temperature is -40°C to 85°C
• Package style is 16-lead NSSOP

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