BH6053GU Datasheet | ROHM

TECHNICAL NOTE Power Management IC Series for Mobile Phones High-efficiency Power Management IC BH6053GU, BH6951GU, BH6952GU z Description 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. z Features 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) pact package 5) Includes over current limiter 6) Includes TSD (Thermal Shut Down) 7) Includes UVLO (Under Voltage Look Out) z Applications 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 z Absolute 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 13.5m W/ o C when more than Ta=25 o C, - 2 50mm×58mm×1.75mm At glass epoxy board mounting. Reduced by 8.7m W/ o C when more than Ta=25 o C. - 3 50mm×58mm×1.75mm At glass epoxy board mounting. Reduced by 12.1m W/ o C when more than Ta=25 o C. Unit V m W o C o C z Remended operating range Parameter Power supply voltage BH6053GU BH6951GU BH6952GU Symbol VCC Limits 3.0 ~ 4.5 Unit Condition REG1I~5I, BATP voltage V BATP voltage REG1I~2I, BATP voltage z Electrical characteristics [BH6053GU circuit current] Unless otherwise specified Ta=25 o C, VCC=VBAT= REG1I= REG23I= REG4I = BATP= REG5I=3.6V Parameter Symbol Min. Typ. Max....