LT3430-1中文资料High Voltage, 3A, 200kHz Step-Down Switching Regulator数据手册ADI规格书

描述 Description

The LT3430/LT3430-1 are monolithic buck switching regulators that accept input voltages up to 60V. A high efficiency 3A, 0.1Ω switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and excellent loop stability.Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuity and by utilizing a supply boost capacitor to saturate the power switch. Patented circuity* maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30µA and a SYNC pin can be externally synchronized with a logic level input from 228kHz to 700kHz for the LT3430 or from 125kHz to 250kHz for the LT3430-1.
The LT3430/LT3430-1 are available in a thermally enhanced 16-pin TSSOP package.

特性 Features

·Wide Input Range: 5.5V to 60V
·3A Peak Switch Current over All Duty Cycles
·Constant 200kHz Switching Frequency200kHz(LT3430)100kHz(LT3430-1)
·0.1 Ω Switch Resistance
·Current Mode
·Effective Supply Current: 2.5mA
·Shutdown Current: 30µA
·1.2V Feedback Reference Voltage
·Easily Synchronizable
·Cycle-by-Cycle Current Limiting
·Small, 16-Pin Thermally Enhanced TSSOP Package

应用 Application

·Industrial and Automotive Power Supplies
·Portable Computers
·Battery Chargers
·Distributed Power Systems