LTC3388IDD-3#PBF

LTC3388-3 is a high efficiency step-down DC/DC converter with internal high side and synchronous power switches that draw only 720nA typical DC supply current at no load while maintaining output voltage regulation. Capable of supplying 50mA of load current, this also incorporate an accurate undervoltage lockout (UVLO) feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, this enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. An additional standby mode disables buck switching while the output is in regulation for short duration loads requiring low ripple. Typical applications are keep alive power for portable products, industrial control supplies, distributed power systems, battery-operated devices.

• High efficiency hysteretic synchronous DC/DC conversion, standby mode disables buck switching
• Input voltage range from 2.7 to 20V (TA=25°C)
• Regulated output voltage is 2.912V (2.8V output selected; D1=0, D0=0 sleep threshold, TA=25°C)
• Output quiescent current is 120nA typical (VOUT=5.0V)
• VIN undervoltage lockout threshold is 2.65V (VIN rising, TA=25°C)
• Maximum duty cycle is 100% (TA=25°C)
• VIN quiescent current when enabled (UVLO) 400nA typical (VIN=2V)
• 10-lead plastic DFN package
• Temperature rating range from -40°C to 125°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