LT1619 Datasheet PDF | Linear Technology

Linear Technology LT1619

The LT1619 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 nonbootstrapped 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.

Part No.	LT1619
Datasheet	LT1619 Download
Manufacturer	Linear Technology
Description	Low Voltage Current Mode PWM Controller
Buy	Stock & Price

FEATURES

s s s s DESCRIPTIO s s s s s s s Wide VIN Range: 1.9V to 18V 300kHz Fixed Frequency Current Mode Control 1A Rail-to-Rail N-Channel MOSFET Driver Low 53mV Current Limit Threshold Voltage Improves Efficiency Implements Boost, SEPIC and Flyback Converters Requiring Low Side Power Transistors Internal Current Sense Amplifier with Leading Edge Blanking Up to 500kHz External Synchronization Burst Mode® Operation for High Efficiency at Light Load 140µA Quiescent Current 15µA Shutdown Current 8-Lead MSOP and SO Packages The LT ®1619 is a fixed frequency PWM controller for implementing current mode DC/DC converters with minimum external parts. Converter efficiency is improved at heavy loads with a 53mV current sense voltage and at light load with Burst Mode operation. The operating frequency is internally set at 300kHz. The oscillator can also be synchronized externally up to 500kHz. No load quiescent current is 140µA and shutdown current is 15µA. The LT1619 is available in 8-lead MSOP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation.