LT1376CS8#PBF

LT1376 is a 500KHz monolithic buck mode switching regulator. A 1.5A 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. 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 using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts are used, including the inductor and capacitors. It is used in application such as portable computers, battery-powered systems, battery charger, distributed power etc.

• Uses all surface mount components
• Inductor size reduced to 5µH
• Easily synchronizable
• Saturating switch design is 0.4ohm maximum
• Effective supply current is 0.9mA typical
• Shutdown current is 15µA typical
• Feedback input bias current is 0.5µA typical
• Maximum switch duty cycle is 93% typical at (VFB = 2.1V or VSENSE = 4.4V)
• Operating junction temperature is 0°C to 125° C
• Package style is 8-lead 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