MD1620F

CAT.No.TU074 SEP.2000 5V Stepping Down DC to DC Converter Power IC MD1620F Converter IC n w o D g in p E ff ic ie n c y p h te ig S l H o d tr n n a o C r e 2A PWM O u t p u t P o we a n d h ig h f u n c t io n in h ig H s e v It a c h ie performanc h ig h g in t in t e g r a ckage Compact pa Summary MD1620F is a non-isolated, PWM control stepping down DC- DC converter power IC including main MOSFET switch and free wheel SBD inside. It has maximum 10W ( 5V 2A ) output power and high efficiency in wide range. It also has wide input voltage range ( 12- 57V ) . Its package is compact surface mount type and it is possible to design DC to DC converter with fewer external components and smaller mounting area. Feature Input Voltage Range 12-57V Maximum Output Current 2A Included main MOSFET switch and free wheel SBD Fixed Frequency 250kHz PWM Control Over Current Protection Function Low Input Voltage Protection Function ( ULVO) Thermal Shut Down Function Recruit Ikebukuro Bldg., 13-23, 1-chome, Minami Ikebukuro, Toshima-ku, Tokyo 171-0022, Japan Phone: Tokyo(03)5951-8106 Fax :(03)5951-8089 Block Diagram Vref 26 Vcc 5 Vboot 6 VB 23 VG 22 VDD TAB2 UVLO START =11.3V STOP =10.8V BOOT reference Vref=11V Driver Vref=Vout+10V reference Vref=5V + - 5% TSD 100 C 150 C Main Switch MOS OFF driver Error amp 5.0VF/B Q 2.5V 3V 1V OSC f=250kHz CLM Vth= 0.1~0.2V 1 2 3 4 24 8~11 R S PWM Comp TAB1 VOUT 25 28 27 CHOUT amp- ampOUT S/S F/B OCL- OCL+ GND P.GND Application...