LTC3121EDE#PBF

LTC3121 is a synchronous step-up DC/DC converter with true output disconnect and inrush current limiting. It features output disconnect in shutdown, dramatically reducing input power drain and enabling VOUT to completely discharge. Adjustable PWM switching from 100KHz to 3MHz optimizes applications for highest efficiency or smallest solution footprint. The oscillator can also be synchronized to an external clock for noise sensitive applications. Selectable Burst Mode operation reduces quiescent current to 25µA, ensuring high efficiency across the entire load range. An internal soft-start limits inrush current during start-up. It is widely used in application such as PCI express cards/systems, piezo actuators, small DC motors, 12V analogue rail From battery, 5V, or backup capacitor etc.

• Input voltage range is 1.8V to 5.5V, 500mV after start-up
• Output voltage range is 2.2V to 15V
• 400mA output current for VIN = 5V and VOUT = 12V
• Output disconnects from input when shut down
• Synchronous rectification upto 95% efficiency
• Inrush current limit, quiescent current (shutdown) is 0.01µA typical
• Quiescent current (Burst mode) is 25µA typical
• Output overvoltage protection, soft-start
• Operating temperature is -40°C to 125°C
• Package style is 12-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