LT1619ES8#PBF

LT1619 is a fixed frequency PWM controller for implementing current mode DC/DC converters with minimum external parts. It operates with input voltages ranging from 1.9V to 18V and is suitable for a variety of battery-powered and distributed DC/DC converters. The internal rail-to-rail N-channel MOSFET driver operates either from the input in the no bootstrapped mode or from the output in bootstrapped operation. The driver is designed to drive a low side power transistor in boost, SEPIC, flyback and other topologies. It is used in application such as 3.3V to 5V DC/DC converters, distributed power supplies, isolated power supplies etc.

• Switching frequency is 300KHz typical
• 1A rail-to-rail N-channel MOSFET driver
• Current limit threshold is 53mV typical
• Internal current sense amplifier with leading edge blanking
• Synchronization frequency range is 370KHz to 500KHz
• Quiescent supply current is 140µA typical at (VS/S = VIN, VFB = 1.5V)
• Shutdown supply current is 15µA typical at (VS/S = 0V)
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic SO

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