MB3775

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27204-3E ASSP SWITCHING REGULATOR CONTROLLER MB3775 LOW VOLTAGE DUAL PWM SWITCHING REGULATOR CONTROLLER The MB3775 is a dual pulse-width-modulation control circuit. It contains the basic circuits required for two PWM control circuits. Complete synchronization is obtained by using the same oscillator output waveform. This IC can provide following types of output voltage: step down, step up, and inverter. Power consumption is low, thus the MB3775 is ideal for use in highefficiency portable equipment. (DIP-16P-M04) Wide supply voltage range: 3.6 V to 18 V Low current consumption: 1.3 mA typical Wide oscillation frequency range: 1 kHz to 500 kHz On-chip timer latch short protection circuit On-chip under voltage lockout protection On-chip reference voltage: 1.28 V Variable dead time provides control over total operating range. (Ta = 25°C) Value 20 -0.3 to +10 20 75 Ta ≤ 25 °C(SOP) Power Dissipation PD TOP Tstg Ta ≤ 25 °C(DIP) Ta ≤ 25°C(VSOP) *620 1000 *430 -30 to +85 Unit V V V mA mW mW mW °C °C (FPT-16P-M06) ABSOLUTE MAXIMUM RATINGS (see NOTE) Rating Power Supply Voltage Error Amp. Input Voltage Collector Output Voltage Collector Output Current Symbol VCC VI VO IO Condition (FPT-16P-M05) PIN ASSIGNMENT (TOP VIEW) CT RT +IN1 -IN1 FB1 D.T.C.1 OUT1 E/GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Operating Temperature Storage temperature -55 to+125 *: The packages are mounted on the epoxy board (4 cm x 4 cm x 1.5 mm) NOTE :...