Date: 30/10/2009

2.25MHz, 800mA synchronous step-down dc/dc converter from Linear

Linear has introduced the LTC3606B, a 2.25MHz, 800mA monolithic synchronous buck regulator using a constant frequency current mode architecture. The LTC3606B operating input voltage ranges from 2.5V to 5.5V, making it suitable for Li-Ion and USB powered applications.

The LTC3606B's programmable average input current limit is suitable for USB applications, supercapacitor charging and point-of-load power supplies because the LTC3606B's limited input current will allow its output to deliver high peak load currents without collapsing the input supply.

The key features of the LTC3606B are,

+ 5% accuracy of programmable average input current limit
Up to 96% of efficiency
Very low noise operation
0.6V to 5V of output voltage range
Power good output voltage monitor
Low dropout operation: 100% duty cycle
Internal soft-start
Current mode operation for line & load transient response
+ 2% of output voltage accuracy
Short-circuit protected
Shutdown current = 1uA

Package:
LTC3606BEDD: 3mm x 3mm DFN-8 package
Price:
LTC3606BEDD: Starts at each $2.10 for 1k pieces
LTC3606BIDD: Each $2.47 for 1k pieces

Availability: All versions are available from stock

For more details visit www.linear.com

Editorial product rating: Average