LTC3421EUF#PBF

LTC3421 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The device includes a 0.10 ohm N-channel MOSFET switch and a 0.14ohm P-channel synchronous rectifier. This product has the ability to simply program the output voltage, switching frequency, current limit, soft-start, Burst Mode threshold and loop compensation with external passive components. Quiescent current is only 12µA during Burst Mode operation, maximizing battery life in portable applications. The oscillator frequency can be programmed up to 3MHz and can be synchronized to an external clock applied to the SYNC pin. An open-drain uncommitted low-battery comparator is included. The part maintains operation in applications with a secondary cell powering the output voltage during shutdown. It is used in application such as handheld computers, cordless phones, GPS receivers, battery backup supplies etc.

• True output disconnect, inrush current limiting
• Upto 1.5A continuous output current
• Input voltage range is 0.5V to 4.5V
• Adjustable output voltage is 2.4V to 5.25V
• Guaranteed 1V start-up, programmable current limit
• Programmable soft-start, synchronizable oscillator
• Manual or automatic Burst Mode® operation, low-battery comparator
• Shutdown current is 1µA maximum, reference output voltage is 1.22V
• Operating temperature is -40°C to 85°C
• Package style is 24-lead plastic QFN

Opmerkingen

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