LTC3530EMS#PBF

LTC3530 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 single lithium-ion, two-cell alkaline or NiMH applications where the output voltage is within the battery voltage range. This device is pin compatible with the LTC3440 buckboost DC/DC converter but adds programmable automatic Burst Mode operation and extends the VIN/VOUT range to 1.8V. Switching frequencies upto 2MHz are programmed with an external resistor. Automatic Burst Mode operation allows the user to program the load current threshold for Burst Mode operation using a single resistor from the BURST pin to GND. It is used in application such as MP3 players, handheld instruments, digital cameras, smart phones, portable GPS units, miniature hard disk drive power etc.

• 250mA continuous output current from 1.8V VIN
• 600mA continuous/1A peak output current from Li-Ion
• Single inductor, programmable automatic Burst Mode® operation
• Output disconnect in shutdown
• Shutdown current is 1μA maximum
• Input current limit is 2A typical
• Maximum duty cycle is 90% typical
• Feedback voltage is 1.215V typical
• Operating temperature is -40°C to 85°C
• Package style is 10-lead plastic MSOP

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