产品概述
The LT1619ES8#PBF is a low voltage current mode PWM Controller for implementing current mode DC/DC converters with minimum external parts. The LT1619 operates with input voltages ranging from 1.9 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 non-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. 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.
- 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
应用
电源管理
产品信息
- :
- 2.5V
- :
- 500mV
- :
- 200mA
- :
- 1.9V
- :
- 18V
- :
- SOIC
- :
- 8引脚
- :
- 300kHz
- :
- -40°C
- :
- 85°C
- :
- -
- :
- -
- :
- MSL 1 -无限制