Power Supply IC Series for TFT-LCD Panels 5V Input Multi-channel System Power Supply IC No.09035JBT09 BD8153EFV Description The BD8153EFV is a system power supply IC for TFT panels.A 1-chip IC providing a total of four voltages required for TFT panels, i.e., logic voltage, sauce voltage, gate high-level, and gate low-level voltage, thus constructing a TFT panel power supply with minimal components required. Features (BD8153EFV) 1) Operates in an operating voltage range as low as 2.1 V to 6. 0 V. 2) Incorporates a step-up DC/DC converter. 3) Incorporates a 3.3-V regulator. 4) Incorporates positive and negative-side charge pumps. 5) Switching frequency of 1100 kHz 6) DC/DC converter feedback voltage of 1.24 V 1% 7) Incorporates a gate shading function 8) Under-voltage lockout protection circuit 9) Thermal shutdown circuit 10) Overcurrent protection circuit 11) HTSSOP-B24 package Applications Liquid crystal TV, PC monitor, and TFT-LCD panel Absolute maximum ratings (Ta = 25C) Parameter Symbol Limit Unit Power supply voltage VCC 7 V Vo1 voltage Vo1 19 V Vo2 voltage Vo2 32 V SW voltage Vsw 19 V Maximum junction temperature Tjmax 150 C Power dissipation Pd 1100* mW Operating temperature range Topr -40 to 125 C Storage temperature range Tstg -55 to 150 C * Reduced by 4.7 mW/C over 25C, when mounted on a glass epoxy board. (70 mm 70 mm 1.6 mm). Recommended Operating Ranges Limit Parameter Symbol Unit MIN MAX Power supply voltage VCC 2.1 6 V Vo1 voltage Vo1 8 18 V SW voltage Vsw 18 V SW Current Isw 1.8 A Vo2 voltage Vo2 30 V www.rohm.com 2009.07 - Rev.B 1/17 2009 ROHM Co., Ltd. All rights reserved. BD8153EFV Technical Note Electrical Characteristics (Unless otherwise specified, VCC = 5 V Vo1 = 15 V Vo2 = 25 V Ta = 25C) 1 DC/DC Converter Block Limit Parameter Symbol Unit Conditions Min. Typ. Max. Soft start Source current Iso 6 10 14 A Vss = 0.5 V Sinking current Isi 0.1 0.2 1.0 mA Vss = 0.5 V,VDD = 1.65 V Error amp Input bias current 1 IFB1 0.1 0.5 A Feedback voltage 1 VFB1 1.227 1.240 1.253 V Buffer Voltage gain AV 200 V/V * Sinking current IoI 25 50 100 A VFB = 1.5 V VCOMP = 0.5 V Source current Ioo -100 -50 -25 A VFB = 1.0 V VCOMP = 0.5 V SW ON resistance N-channel RON N 50 200 600 m * Leak current N-channel ILEAKN 10 A Vsw = 18 V Maximum duty cycle DMAX 75 85 95 % Overcurrent protection Saw current limit Insw 2 3 A * 2. Regulator controller Limit Parameter Symbol Unit Conditions Min. Typ. Max. Error amp VDD voltage VDD 3.2 3.3 3.4 V Maximum base current IBMAX 4 7 11 mA Line regulation RegI 10 30 mV VCC = 4.5 V to 5.5 V Load regulation RegL 10 50 mV Io = 10 mA to 100 mA Under-voltage lockout protection Off threshold voltage VROFF 1.7 1.8 1.9 V On threshold voltage VRON 1.6 1.7 1.8 V This product is not designed for protection against radio active rays. * Design guarantee (No total shipment inspection is made.) www.rohm.com 2009.07 - Rev.B 2/17 2009 ROHM Co., Ltd. All rights reserved.