Datasheet 4-Channel White LED Driver with Integrated FET for up to 40 LEDs BD65D00MUV PWM dimming(100Hz - 25kHz)Analog General Description Brightness Control This IC is white LED driver IC with PWM step-up DC/DC converter that can boost max 41V and current driver that can drive max 100mA. The wide and Key Specifications precision brightness can be controlled by external PWM pulse. This IC has very accurate current drivers, Operating power supply voltage range: 6V to 27V and it has few current errors between each strings. So, LED maximum current: 100mA/ch it will be helpful to reduce brightness spots on the LCD Quiescent Current: 1.6A (typ.) panel. Small package is suited for saving space. Operating temperature range: -40 to +85 It can respond to the application according to the application to be abele to switch to external/internal Package W(typ.) x D(typ.) x H(Max.) NchFET boosting. Features High efficiency PWM step-up DC/DC converter (fsw=typ 1.25MHz, 0.60MHz to 1.6MHz) High accuracy & good matching current drivers 4ch (MAX100mA/ch) Integrated 50V power Nch MOSFET Soft Start function VQFN028V5050 Drive up to 10 LEDs in series, 5.00mm x 5.00mm x 1.00mm 4 strings in parallel Various safety functions Over-voltage protection External SBD open detect / Output Figure 1. Short protection Over current limit CH Terminal open / GND short protect Applications CH over voltage protect / LED short protect All LCD equipments, Backlight of Notebook PC, Thermal shutdown Amusement, net book, monitor, TV, Portable DVD UVLO player, light source etc. ISET short protection Typical Application Circuit (4 parallel) 6V to 27V Figure 2. Typical Application Circuit Product structure Silicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0G3G0C400220-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/36 TSZ22111 14 001 7.Dec.2012 Rev.001Datasheet BD65D00MUV Absolute Maximum Ratings (Ta=25) Parameter Symbol Ratings Unit Conditions VDC, ISET, ABC, COMP, FSET, TEST, Terminal voltage 1 VMAX1 7 V FAULT, PREOUT, TRIN, SENSP Terminal voltage 2 VMAX2 45 V CH1 to CH4, LX, OVP Terminal voltage 3 VMAX3 30.5 V VIN, ENABLE Terminal voltage 4 VMAX4 15 V PWM *1 Power dissipation 1 Pd1 380 mW *2 Power dissipation 2 Pd2 880 mW *3 Power dissipation 3 Pd3 3264 mW Operating temperature range Topr -40 to +85 Storage temperature range Tstg -55 to +150 *1 Reduced 3.0mW/ With Ta>25 when not mounted on a heat radiation Board. 2 *2 1 layer (ROHM Standard board) has been mounted. Copper foil area 0mm , When its used by more than Ta=25 , its reduced by 7.0mW/ . 2 2 *3 4 layer (JEDEC Compliant board) has been mounted. Copper foil area 1.4layer 20.2mm , Copper foil area 2 to 3layers 5505mm , When its used by more than Ta=25 , its reduced by 26.1mW/ . Power dissipation is calculated by formula : (Storage temperature max - 25 )/ ja (ex. Pd1=3.0mW/) Recommended Operating Ratings (Ta=-40to +85 ) Limits Parameter Symbol Unit Conditions Min. Typ. Max. VINL 6.0 12.0 27.0 V Coil power supply Power supply voltage VIN 4.5 5 27.0 V IC power supply Electrical Characteristics (Unless otherwise specified, VIN=12V, Ta = +25) Limits Parameter Symbol Unit Conditions Min. Typ. Max. General Quiescent Current Iq - 1.6 4.4 A ENABLE=0V Current Consumption Idd - 3.6 5.4 mA OVP=0V,ISET=39k Max. Output Voltage MOV - - 41 V Under Voltage Lock Out UVLO - 3.7 4.1 V VIN falling edge ENABLE Terminal Low Level Input Voltage EnL 0.0 - 0.8 V High Level Input Voltage 1 EnH 2.0 - VIN V ENABLE Pull down resistor EnR 100 300 500 k ENABLE =3V Output Current ENIout - 0 2 A ENABLE=0V PWM Terminal Low Level Input Voltage PWML 0.0 - 0.8 V High Level Input Voltage 2 PWMH 1.3 - 14.5 V PWM Pull down resistor PWMR 100 300 500 k PWM=3V Output Current PWMIout - 0 2 A PWM=0V FAULT Nch RON FFCR - - 3 k ENABLE=PWM=3V, OVP=2V Regulator VDC Voltage VREG 4.2 5.0 6.0 V No load, VIN > 6V www.rohm.com TSZ02201-0G3G0C400220-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/36 TSZ22111 15 001 7.Dec.2012 Rev.001