FEATURES
s s DESCRIPTIO s s s s s s s Wide Input Range: 3.5V to 25V Three Switching Regulators with Internal Power Switches: 3A Step-Down, 2A Step-Down, 1.5A Inverting/Boost Antiphase Switching Reduces Ripple Independent Shutdown/Soft-Start Pins Independent Power Good Indicators Ease Supply Sequencing Input Voltage Power Good Indicators Monitor Input Supply Uses Small Inductors and Ceramic Capacitors Constant 1.1MHz Switching Frequency Thermally Enhanced 28-Lead TSSOP Package The LT®1941 is a triple current mode DC/DC converter with internal power switches. Two of the regulators are step-down converters with 3A and 2A power switches. The third regulator can be configured as a boost, inverter or SEPIC converter and has a 1.5A power switch. All three converters are synchronized to a 1.1MHz oscillator. The two step-down converters run with opposite phases, reducing input ripple current. The output voltages are set with external resistor dividers and each regulator has independent shutdown and soft-start circuits.
Linear Technology
