LTC3125EDCB#TRMPBF

LTC3125 is a high efficiency, synchronous step-up DC/DC converter with an accurate programmable average input current limit. In mobile computing, GSM and GPRS cards demand high current pulses well beyond the capability of the PC Card and compact flash slots. This device in concert with a reservoir capacitor, keeps the slot power safely within its capabilities providing a high performance and simple solution. The current mode PWM design is internally compensated. Output disconnect allows the load to discharge in shutdown, while also providing inrush current limiting. It is widely used in application such GSM/GPRS PCMCIA/compact flash PC card modems, wireless emergency locators, portable radios, supercap chargers etc.

• Programmable average input current limit
• Low quiescent current Burst Mode® operation
• Output disconnect in shutdown, soft-start
• Internal current sense resistor, VIN <gt/> VOUT operation
• Supports high current GSM/GPRS load burst
• Input voltage range is 1.8V to 5.5V
• Quiescent current (shutdown) is 1μA maximum
• Frequency is 1.6MHz typical, 1.2A peak current limit
• Operating junction temperature is -40°C to 125°C
• Package style is 8-lead plastic DFN

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