BH6951GU

TECHNICAL NOTE Power Management IC Series for Mobile Phones High-efficiency Power Management IC BH6053GU, BH6951GU, BH6952GU zDescription The High-Efficiency Power Management IC is considered to be the best power supply for CPU application. It integrates a step-down DC/DC converter and a multi channel LDO for portable devices. Each LDO can be controlled externally. zFeatures 1) Fixed operation frequency (f=1.1MHz) 2) Low-current consumption at low load by using a LDO configured with a DC/DC converter 3) Includes soft start 4) Compact package 5) Includes over current limiter 6) Includes TSD (Thermal Shut Down) 7) Includes UVLO (Under Voltage Look Out) zApplications The device is suitable for use with all portable equipment, such as cellular phones, digital cameras, portable music players, portable video games and PDAs. z Product Lineup Parameter LDO ch number DC/DC converter ch number Package BH6053GU 5ch 1ch VCSP85H3 (32pin) 3.54mm×3.54mm BH6951GU - 1ch VCSP85H2 (16pin) 2.60mm×2.60mm BH6952GU 2ch 1ch VCSP85H3 (24pin) 3.06 mm×3.06mm Ver.B Nov.2005 zAbsolute maximum ratings Parameter Symbol Limits Maximum applied voltage BH6053GU Power dissipation BH6951GU BH6952GU Vmax Pd 7 1350*1 870*2 1210*3 Operating temperature range Topr －30 to 75 Storage temperature range Tstr －55 to 125 *1 50mm×58mm×1.75mm At glass epoxy board mounting. Reduced by 13.5mW/ oC when more than Ta=25 oC, *2 50mm×58mm×1.75mm At glass epoxy board mounting. Reduced by 8.7mW/ oC when more th...