LT1506CS8#PBF

LT1506 is a monolithic buck mode switching regulator functionally identical to the LT1374 but optimized for lower input voltage applications. It will operate over a 4V to 15V input range compared with 5.5V to 25V for the LT1374. A 4.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage and adjustable parts are available. A special high speed bipolar process and new design techniques achieve high efficiency at high switching frequency. Efficiency is maintained over a wide output current range by keeping quiescent supply current to 4mA and by utilizing a supply boost capacitor to saturate the power switch. It is widely used in application such as portable computers, battery-powered systems, battery charger, distributed power etc.

• Easily synchronizable
• Uses all surface mount components
• Inductor size reduced to 1.8µH
• Saturating switch design is 0.07 ohm
• Cycle-by-cycle current limiting
• Switch frequency is 500KHz typical
• Feedback input bias current is 0.5µA typical
• Shutdown supply current is 15µA typical
• Operating junction temperature is 0°C to 125° C
• Package style is 8-NSOIC

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