ADI LTC1871XMS#PBF

Step-Up, Step-Up/Step-DownBoost, Flyback, SEPIC2,5 В ~ 36 В

Overview

LTC�1871X is a wide input range, current mode, boost, flyback or SEPIC controller that drives an N-channel power MOSFET. LTC1871X is rated to 175�C junction temperature and is 100% tested at 175�C. Intended for low to medium power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET�s on-resistance, thereby maximizing efficiency. The IC�s operating frequency can be set with an external resistor over a 65kHz to 900kHz range, and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10μA make the LTC1871X ideally suited for battery-operated systems. For applications requiring constant frequency operation, Burst Mode operation can be defeated using the MODE/ SYNC pin. Higher output voltage boost, SEPIC and flyback applications are possible with the LTC1871X by connecting the SENSE pin to a resistor in the source of the power MOSFET. The LTC1871X is available in the 10-lead MSOP package.

Features

Applications

• CMM
• Various precision measuring instruments
• Various precision measuring detectors
• Flaw detection equipment
• Balance equipment
• Industrial robots
• Industrial controllers
• Die casting equipment
• Injection molding machinery
• Various CNC machine tools