Power Supply ICs for TFT-LCD Panels Multi-channel System Power Supply IC for Small to Middle PANEL BD8184MUV No.11035EBT19 Description The BD8184MUV is a system power supply for the TFT-LCD panels used for liquid crystal Monitors and Note Display. Incorporates high-power FET with low on resistance for large currents that employ high-power packages, thus driving large current loads while suppressing the generation of heat. A charge pump controller is incorporated as well, thus greatly reducing the number of application components. Also Gate Shading Function is included. Features 1) Boost DC/DC converter 18 V / 2.5 A switch current. (Target specification is 1% accurate.) 2) Switching frequency: 1.2 MHz 3) Operational Amplifier (short current 200mA) 4) Incorporates Positive / Negative Charge-pump Controllers. 5) Gate Shading Function 6) VQFN024V4040 Package (4.0 mm x 4.0 mm) 7) Protection circuits: Under Voltage Lockout Protection Circuit Thermal Shutdown Circuit (Latch Mode) Over Current Protection Circuit (AVDD) Timer Latch Mode Short Circuit Protection (AVDD SRC VGL) Over / Under Voltage Protection Circuit for Boost DC/DC Output No SCP time included (160ms from UVLO-off) Applications Power supply for the TFT-LCD panels used for LCD Monitors and Note Display www.rohm.com 2012.06 - Rev.B 1/17 2012 ROHM Co., Ltd. All rights reserved. Not Recommended for New DesignsTechnical Note BD8184MUV Absolute Maximum Ratings (T = 25) A Parameter Symbol LIMIT Unit Supply Voltage 1 VIN +7 V Supply Voltage 2 AVDD +20 V Supply Voltage 3 SRC +36 V Switching Voltage SW, DRP, DRN +20 V Input Voltage 1 RSTIN, DLY, CTL, FB, FBP, FBN VIN+0.3 V Input Voltage 2 INN, INP +20 V Output Voltage 1 RST, COMP, VREF +7 V Output Voltage 2 VCOM +20 V Output Voltage 3 1 GSOUT +36 V Output Voltage 3 2 SRC - GSOUT +40 V Junction Temperature Tama 150 *1 Power Dissipation Pd 3560 mW Operating Temperature Range Topr -4085 Storage Temperature Range Tstg -55150 *1 Derating in done 28.5mW/ for operating above Ta25(On 4-layer 74.2mm74.2mm1.6mm board) Operating Range (Ta=-4085) Parameter Symbol MIN MAX Unit Supply Voltage 1 VIN 2.0 5.5 V Supply Voltage 2 AVDD 6 18 V Supply Voltage 3 SRC 12 34 V www.rohm.com 2012.06 - Rev.B 2/17 2012 ROHM Co., Ltd. All rights reserved. Not Recommended for New Designs