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| UNISONIC TECHNOLOGIES CO., F6908 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 openations. SOP-8 LINEAR INTEGRATED CIRCUIT FEATURES * Soft switching drive for low noise * Lock detection and automatic restart function * Thermal shut-down protection *Pb-free plating product number: F6908L PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN FUNCTION NAME OUT2 Output 2 HO Hall signal output pin Capacitor terminal for Lock LD detection, Auto restart VCC Power supply pin H+ Hall signal input pin + HHall signal input pin OUT1 Output 1 GND GROUND ORDERING INFORMATION Normal F6908-S08-R F6908-S08-T Order Number Lead Free Plating F6908L-S08-R F6908L-S08-T Package SOP-8 SOP-8 Packing Tape Reel Tube www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., 1 QW-R109-016.B F6908 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT 1 REG 8 M LOCK DETECTION AND RESTART 2 7 OUT 2 OUT 1 3 CS + + TSD Control 6 HALL HALL AMP + 5 4 HALL SIGNAL INPUT-OUTPUT TRUTH TABLE H+ H L Condition: LD=0V HL H OUT1 H L OUT2 L H HO H L UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 QW-R109-016.B F6908 ABSOLUTE MAXIMUM RATINGS (Ta=25) LINEAR INTEGRATED CIRCUIT 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* A Hall Signal Output Current IHO 15 mA Power Dissipation PD 680 ** mW Operating Temperature TOPR -40 ~ +100 Junction Temperature TJ +125 Storage Temperature TSTG -40 ~ +150 * This value is not to be over PD and ASO. ** To use at temperature above Ta = 25 reduce 5.5 mW/.(On 70.0mmx70.0mmx1.6mm glass epoxy board) The device is guaranteed to meet performance specification within 0 ~ 70 operating temperature range and assured by design from -40 ~ 100, characteristic and correlation with static process control. RECOMMENDED OPERATING CONDITIONS (Ta=25) PARAMETER Supply Voltage SYMBOL VCC RATINGS 3 ~ 14 UNIT V ELECTRICAL CHARACTERISTICS (Unless otherwise specified Ta = 25, Vcc = 5V) 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 VLDCL VLDCP VOL VOH VHOL Icc ILDC ILDD IHOL RCD HOFS GHO TSD IOUT=200mA IOUT=200mA IHO=5mA At output: OFF VLD=1.1V VLD=1.1V VHO=15V rCD=ILDC/ILDD 4.2 -10 320 TEST CONDITIONS MIN 1.14 0.47 TYP 1.80 0.76 0.2 4.1 0.3 3.4 2.75 0.48 0 5.7 MAX 2.47 1.06 0.3 0.5 8.7 4.50 0.90 50 9.5 10 680 mV UNIT V V V V V mA A A A 3.9 1.5 1.50 0.24 500 140 25 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 QW-R109-016.B F6908 POWER DERATING CURE PD (mW) 1000 LINEAR INTEGRATED CIRCUIT 800 687 600 400 200 0 25 50 75 85 100 125 150 Ta () To use at temperature above Ta=25 reduce 5.5mW/ (On 70.0mmx70.0mmx1.6mm glass epoxy board ) 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. Cx(VLDCL-VLDCP) TON (Charge time) = ILDC Cx(VLDCL-VLDCP) TOFF (Discharge time)= ILDD C: Capacitor at LD pin The following value shows charge time and discharge time at C=0.47F for reference. Charge time =0.18S (Output: ON) Discharge time = 1.02S (Output: OFF) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 QW-R109-016.B F6908 SHOWS TIMING CHART OF LD PIN LINEAR INTEGRATED CIRCUIT H+ OUT1 TOFF Output Tr OFF VLDCL LD VLDCP HO Motor Detect lock lock Depend on the hall output Lock cancel Reset ordinary motion TON ON Fig.1 Timing chart (LD terminal, HO terminal) 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-) Hall Amp input bias voltage range VCC VCC-2V 1/2 VCC GND Fig.2 Hall amp input bias voltage range UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 QW-R109-016.B F6908 LINEAR INTEGRATED CIRCUIT 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. (H+)-(H-) OUT1 Fig.3 Difference of output signal depending on hall input signal 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 6 QW-R109-016.B |
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