System Power Supply ICs for TVs Built-in FET Synchronous Rectification Type 3 TM DC/DC converters H Reg Type No.11034EBT08 BD95830MUV Description BD95830MUV is a 2ch switching regulator that can generate low output voltages (0.8V to 5.5V) at the large input voltage range (7.5 to 15V). Space-saving and high efficient switching regulator can be achieved due to built-in N-MOSFET power 3 TM transistor. The IC also incorporates a new technology called H Reg , a Rohm proprietary control method which facilitates ultra-high transient response against changes in load. For protection and ease of use, the IC also incorporates soft start, and short circuit protection with timer latch functions. This switching regulator is designed for power supplies for Digital AV Equipments. Features 3 TM 1) 2ch H Reg DC/DC converter synchronous controller 2) Built-in N-MOSFET (High side:75m, Low side:50m) 3) Built-in Thermal Shut Down (TSD), Under-Voltage Lock-Out (UVLO), Adjustable Over Current Protection (OCP) : detected Low side FET Ron, Over Voltage Protection (OVP), Short Circuit Protection (SCP) 4) Soft start function to minimize rush current during startup 5) VQFN032V5050 package 6) Built-in 5V power supply for FET drive 7) Integrated bootstrap diode 8) Switching frequency : 400kHz800kHzdepend on input-output condition Applications LCD-TV, PDP-TV, Set Top Box, Game Consoles, Desktop PCs www.rohm.com 2011.05 - Rev.B 1/13 2011 ROHM Co., Ltd. All rights reserved. Technical Note BD95830MUV Maximum Absolute Ratings (Ta=25) Parameter Symbol Ratings Unit *1*2 Input Voltage VIN1, VIN2, VINS 15.1 V *1*2 BOOT Voltage BOOT1,BOOT2 21.1 V *1*2 BOOT-SW Voltage BOOT1-SW1, BOOT2-SW2 7 V *1*2 Output Voltage VOUT1, VOUT2 7 V Output Feedback Voltage FB1, FB2 VREG V *1*2 VREG Voltage VREG 7 V VCC Voltage VCC VREG V *1*2 Logic Input Voltage EN1, EN2 15.1 V *3 Power Dissipation 1 Pd1 0.38 W *4 Power Dissipation 2 Pd2 0.88 W *5 Power Dissipation 3 Pd3 3.26 W *6 Power Dissipation 4 Pd4 4.56 W Operating Temperature Range Topr -20+100 Storage Temperature Range Tstg -55+150 Maximum Junction Temperature Tjmax +150 *1 Not to exceed Pd. *2 Instantaneous surge voltage, back electromotive force and voltage under less than 10% duty cycle. *3 Reduced by 3.04mW/ for each increase in Ta of 1 over 25 (when dont mounted on a heat radiation board ) *4 Reduced by 7.04mW/ for increase in Ta of 1 over 25. 2 (when mounted on a board 74.2mm74.2mm1.6mm Glass-epoxy PCB(1 layer), copper foil area : 20.2mm ) *5 Reduced by 26.11mW/ for increase in Ta of 1 over 25. 2 2 (when mounted on a board 74.2mm74.2mm1.6mm Glass-epoxy PCB(4 layer), copper foil area: 20.2mm , 2-3layer: 5505mm ) *6 Reduced by 36.5mW/ for increase in Ta of 1 over 25. 2 (when mounted on a board 74.2mm74.2mm1.6mm Glass-epoxy PCB(4 layer), copper foil area: 5505mm ) Operating Conditions (Ta=25) Ratings Parameter Symbol Unit Min. Max. Input Voltage VIN1, VIN2, VINS 7.5 15 V BOOT Voltage BOOT1, BOOT2 4.5 21 V SW Voltage SW1, SW2 -0.7 15 V BOOT-SW Voltage BOOT1-SW1, BOOT2-SW2 4.5 5.5 V Logic Input Voltage EN1, EN2 0 15 V Output Voltage VOUT1, VOUT2 0.8 5.5 V MIN ON TIME tonmin - 100 ns This product should not be used in a radioactive environment. www.rohm.com 2011.05 - Rev.B 2/13 2011 ROHM Co., Ltd. All rights reserved.