MB39A136

FUJITSU MICROELECTRONICS DATA SHEET DS04-27262-2E ASSP for Power Management Applications (General-Purpose DC/DC Converter) 2ch PFM/PWM DC/DC converter IC with synchronous rectification MB39A136 ■ DESCRIPTION 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 protect...