UNISONIC TECHNOLOGIES CO., F6908 LINEAR INTEGRATED CIRCUIT SINGLE-PHASE FULL-WAVE MOTOR DRIVER FOR FAN MOTOR DESCRIPTION UTC F6908 is a single-phase full-wave motor driver for fan motor suitable for 5V and 12V operations. FEATURES * Soft Switching Drive for Low Noise * Lock Detection and Automatic Restart Function * Thermal Shut-Down Protection ORDERING INFORMATION Ordering Number Lead Free Halogen Free F6908L-S08-R F6908G-S08-R F6908L-SH2-R F6908G-SH2-R www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Package Packing SOP-8 HSOP-8 Tape Reel Tape Reel 1 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION PIN DESCRIPTION PIN NO 1 2 3 4 5 6 7 8 PIN NAME OUT2 HO LD VCC H+ HOUT1 GND FUNCTION Output 2 Hall signal output pin Capacitor terminal for Lock detection, Auto restart Power supply pin Hall signal input pin + Hall signal input pin Output 1 GROUND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM 8 1 REG M LOCK DETECTION AND RESTART 2 7 OUT 2 OUT 1 6 Control 3 HALL CS + - 4 TSD + - HALL AMP + 5 HALL SIGNAL INPUT-OUTPUT TRUTH TABLE H+ H L Condition: LD=0V HL H UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUT1 H L OUT2 L H HO H L 3 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 15 V Output Voltage VOUT 15 V Hall Signal Output Voltage VHO 15 V Output Current IOUT 0.7(Note 2) A Hall Signal Output Current IHO 15 mA Power Dissipation PD 687 (Note 3) mW Junction Temperature TJ +150 °C Operating Temperature TOPR -20 ~ +100 °C Storage Temperature TSTG -40 ~ +150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. This value is not to be over PD and ASO. 3. To use at temperature above Ta = 25°C reduce 5.5 mW/°C.(On 70.0mm×70.0mm×1.6mm glass epoxy board) RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER Supply Voltage SYMBOL VCC RATINGS 3 ~ 14 UNIT V ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 5V, unless otherwise specified) PARAMETER Clamp Voltage of Capacitor for Lock Detection Reference Voltage of Capacitor for Lock Detection Output Voltage L Output Voltage H “HO” Terminal Voltage L Supply Current Charge Current of Capacitor for Lock Detection Discharge Current of Capacitor for Lock Detection “HO” Terminal Leak Current Charge-Discharge Current Ratio of Capacitor for Lock Detection Hall Input Offset Voltage Hall Input-Output Gain Thermal Shutdown TSD Hysteresis SYMBOL MIN TYP MAX UNIT VLDCL 1.14 1.80 2.47 V VLDCP 0.47 0.76 1.06 V 0.3 0.5 8.7 V V V mA VOL VOH VHOL Icc IOUT=200mA IOUT=200mA IHO=5mA At output: OFF 1.5 0.2 4.1 0.3 3.4 ILDC VLD=1.1V 1.50 2.75 4.50 μA ILDD VLD=1.1V 0.24 0.48 0.90 μA IHOL VHO=15V 0 50 μA RCD rCD=ILDC/ILDD 5.7 9.5 HOFS GHO TSD UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS 3.9 4.2 -10 320 500 150 25 10 680 mV °C °C 4 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT POWER DERATING CURE LOCK DETECT CIRCUIT, AUTOMATIC RESTART CIRCUIT Charge and discharge time at motor lock condition varies with the value of external capacitor at LD terminal, and is given by the following equation. TON (Ch arg e time) = C × (VLDCL - VLDCP ) I LDC TOFF (Disch arg e time) = C × ( VLDCL - VLDCP ) ILDD C: Capacitor at LD pin The following value shows charge time and discharge time at C=0.47µF for reference. Charge time =0.18S (Output: ON) Discharge time = 1.02S (Output: OFF) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT SHOWS TIMING CHART OF LD PIN UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R109-016.D F6908 LINEAR INTEGRATED CIRCUIT CAUTIONS (1) Power dissipation IC power dissipation varies widely with supply voltage, output current and application of IC. Please pay attention not to exceed the allowable power rating. (2) Hall signal input terminals (H+, H-) VCC VCC-2V 1/2 VCC GND Fig.2 Hall amp input bias voltage range A. Hall signal amplitude should be key within range 0V ~ VCC-2V. B. The output signal of this IC is the amplified by about 500 times of hall input signal coith pattern shown below for different leuel ok signal input. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 7 QW-R109-016.D