LT3431IFE#PBF

LT3431 is a 500KHz monolithic buck switching regulator that accepts input voltages upto 60V. A current mode architecture provides fast transient response and good loop stability. Special design techniques and a new high voltage process achieve high efficiency over a wide input range. 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. Patented circuitry maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30µA and the device can be externally synchronized from 580KHz to 700KHz with logic level inputs. It is used in application such as industrial and automotive power supplies, portable computers, battery chargers, distributed power systems etc.

• Wide input voltage range is 5.5V to 60V
• Peak switch current is 5A typical
• Saturating switch design is 0.1ohm typical
• Peak switch current maintained over full duty cycle range
• Shutdown current is 30µA typical
• 1.219V typical feedback reference voltage
• Easily synchronizable, cycle-by-cycle current limiting
• Operating junction temperature is -40°C to 125°C
• Package style is 16-lead plastic TSSOP

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