LT3959

LT3959 Features Wide Input Voltage Range Boost/SEPIC/Inverting Converter with 6A, 40V Switch Description n Wide VIN Range: 1.6V (2.5V Start-Up) to 40V n Positive or Negative Output Voltage Programming with a Single Feedback Pin n PGOOD Output Voltage Status Report n Internal 6A/40V Power Switch n Programmable Soft-Start n Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor n Synchronizable to an External Clock n Low Shutdown Current < 1µA n INTVCC Regulator Supplied from VIN or DRIVE n Programmable Input Undervoltage Lockout with Hysteresis n Thermally Enhanced QFN (5mm × 6mm) and TSSOP Packages Applications n Automotive n Telecom n Industrial The LT®3959 is a wide input range, current mode, DC/DC controller which is capable of regulating either positive or negative output voltages from a single feedback pin. It can be configured as a boost, SEPIC or inverting converter. It features an internal low side N-channel MOSFET rated for 6A at 40V and driven from an internal regulated supply provided from VIN or DRIVE. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3959 can be set over a 100kHz to 1MHz range with an external resistor, or can be synchronized to an external clock using the SYNC pin. The LT3959 features soft-start and frequency foldback functions to limit inductor current during start-up and output short-circuit. A window c...