LTC3619B regulator

Another high efficiency and easy to use synchronous buck regulator designed by the Linear Technology is the LTC3619B regulator which use a constant frequency current mode architecture.

The input supply voltage range of the LTC3619B  regulator is from 2.5V to 5.5V . The LTC3619B is easy to use and is ideal for high peak load current applications and many other applications like : USB powered devices ,  supercapacitor charging , radio transmitters and other handheld devices applications  .

The output voltages supported by the LTC3619B is from 0.6V  to 5 volts offering high efficiency ( up to 96%) .

The LTC3619B offers two output channels which can supply can supply 400mA  ( on channel 1 ) and 800mA output current ( for channel 2 ) .

The operating frequency is internally set at 2.25MHz allowing the use of small surface mount inductors .

Other features of the LTH3619 regulator are  :  Programmable Average Input Current Limit ,  Low Noise Pulse-Skipping Operation at Light Loads , Input Voltage Range: 2.5V to 5.5V , Output Voltage Range: 0.6V to 5V ,  2.25MHz Constant-Frequency Operation ,  Power Good Output Voltage Monitor for Each Channel ,  Low Dropout Operation: 100% Duty Cycle , Independent Internal Soft-Start for Each Channel , ±2% Output Voltage Accuracy , Short-Circuit Protected .