MB39A136

MB39A136 2ch PFM/PWM DC/DC Converter IC with Synchronous Rectification MB39A136 is 2ch step-down DC/DC converter IC of the current mode N-ch/N-ch synchronous rectification method. It contains the enhanced protection features, and supports the symmetrical-phase method and the ceramic capacitor. MB39A136 realizes rapid response, high efficiency, and low ripple voltage, and its high-frequency operation enables the miniaturization of inductors and I/O capacitors. Features ■ High efficiency ■ For frequency setting by external resistor : 100 kHz to 1 MHz ■ Error Amp threshold voltage : 0.7 V ± 1.0% ■ Minimum output voltage value : 0.7 V ■ Wide range of power-supply voltage : 4.5 V to 25 V ■ PFM/PWM auto switching mode and fixed PWM mode selectable ■ Supports Symmetrical-Phase method ■ With built-in over voltage protection function ■ With built-in under voltage protection function ■ With built-in over current protection function ■ With built-in over-temperature protection function ■ With built-in soft start/stop circuit without load dependence ■ With built-in synchronous rectification type output steps for N-ch MOS FET ■ Standby current : 0 [μA] Typ ■ Small package : TSSOP-24 Application ■ Digital TV ■ Photocopiers ■ Surveillance cameras ■ Set-top boxes (STB) ■ DVD players, DVD recorders ■ Projectors ■ IP phones ■ Vending machine ■ Consoles and other non-portable devices Cypress Semiconductor Corporation 198 Champion Court Document Number: 002-08376 Rev. *B ...