MP1010B Cold Cathode Fluorescent Lamp Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP1010B is a power solution IC that offers Integrated Power Switches a true complete solution for driving a Cold 6.0V to 23V Variable Supply Voltage with Cathode Fluorescent Lamps (CCFL). This Regulated Lamp Current. Power IC converts unregulated DC voltage to a Rated 12W Power Output at 12V Input nearly pure sine wave required to ignite and Open Lamp Regulation operate the CCFL. Based on proprietary power Current and Voltage Feedback Control topology and control techniques it greatly Logic Level Burst Mode Control increases the power conversion efficiency. Supports Open/Short Lamp Protection Soft-Start EVALUATION BOARD REFERENCE Short Circuit Protected Output Board Number Dimensions High Energy Start Pulse EV1010B-00A 3.75X x 0.4Y x 0.25Z Analog and Burst Mode Dimming APPLICATIONS LCD Backlight Inverter for Notebook Computers Web Pads, GPS, Desktop Displays, Portable DVD, Car Video Display Systems MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. The MP1010B is covered by US Patents 6,633,138, 6,316,881, 6,114,814. TYPICAL APPLICATION Rs Rdamp N1 CbtR Cp N/A HV 2 Rbosc 1 MP1010B T1 CN1 J1 ABRT 5 Cabr Rabr DBRT 4 Rbdr EN 3 Cisb Ren1 R esd GND 2 F1 / 1A VBATT 1 FUSE MP1010B Rev. 2.2 www.MonolithicPower.com 1 6/30/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2009 MPS. All Rights Reserved. Cba1 1 20 BR AGND Cba2 2 19 IL FB Cbosc 3 18 Rft Cft2 BOS OL Cdbr 4 17 T/B FT Cft1 Cen 5 16 EN COMP Ren2 Ccomp 6 15 DR REF CbaL Cref Cdrv 7 14 IN IN CbaR 8 13 OUTL OUTR 9 12 PGND PGND 10 11 BSTL BSTR Rbleed CbtL Csfb Rsfb Risb Cs2 N/A Cs1 RlfbMP1010B COLD CATHODE FLUORESCENT LAMP DRIVER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS Input Voltage (V ) ...................................... 25V IN TOP VIEW IL, FB Input Voltages (V , V ) .....................6V IL FB OL Input Voltage (V ).................0.3V to +12V OL BR 1 20 AGND Logic Input Voltages ...................0.3V to +6.8V IL 2 19 FB Power Dissipation...................................... 1.0W Operating Frequency............................. 150KHz BOS 3 18 OL Junction Temperature...............................150C T/B 4 17 FT Lead Temperature (Solder) ........ 260C EN 5 16 COMP Storage Temperature ..............55 C to +150 C DR 6 15 REF (2) Recommended Operating Conditions IN 7 14 IN Input Voltage (V ) .............................. 6V to 23V IN OUTL 8 13 OUTR Analog Brightness Voltage (V ) ....... 0V to 1.9V BR PGND 9 12 PGND Digital Brightness Voltage (V ) ........ 0V to 1.8V T/B BSTL 10 11 BSTR Enable (V ) ......................................... 0V to 5V EN Operating Frequency (Typical) ................ 60KHz Exposed Pad for Ambient Operating Temp .............20C to +85 C TSSOP20E Only. (3) Connect to AGND. Thermal Resistance JA JC TSSOP20 .............................. 90 .....25 ....C/W Part Number* Package Temperature TSSOP20E ............................ 40 ......6 .....C/W MP1010BEM TSSOP20 20 C to +85C Notes: MP1010BEF TSSOP20E 20 C to +85C 1) Exceeding these ratings may damage the device. For Tape & Reel, add suffix Z (eg. MP1010BEMZ) 2) The device is not guaranteed to function outside of its * For RoHS Compliant Packaging, add suffix LF operating conditions. 3) Measured on approximately 1 square of 1 oz copper. (eg. MP1010BEMLFZ) ELECTRICAL CHARACTERISTICS V = 12V, T = +25 C, unless otherwise noted. IN A Parameter Symbol Condition Min Typ Max Units Reference Voltage Output Voltage V I = 3mA 4.75 5.0 5.25 V REF REF Reference Current I 3.0 mA REF Line Regulation 6.5V < V < 23V 30 mV IN Load Regulation 0mA < I < 3.0mA 30 mV REF Output Drivers (4) Switch On Resistance R 0.08 0.11 0.14 (ON) Short Circuit Current I 4 A SC Minimum On Time T V = 0V, V = 23V 435 550 ns ON(MIN) COMP IN Minimum On Time T V = 0V, V = 6V 1750 2100 ns ON(MIN) COMP IN Battery Supply Supply Current (Quiescent) I 10 A CC(OFF) Supply Current (Operating) I V = 23V 1.8 2.5 mA CC(ON) IN MP1010B Rev. 2.2 www.MonolithicPower.com 2 6/30/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2009 MPS. All Rights Reserved.