UNISONIC TECHNOLOGIES CO., LTD SK1288 LINEAR INTEGRATED CIRCUIT 2-PHASE DC-FAN MOTOR DRIVER DESCRIPTION SK1288 is a 2-Phase driver for DC-Fan motor . Build-in hall amplifier with hysteresis. Low switching noise and effective motor driver are further advantages . Support the function of motor lock protection , auto-restart , rotation detection signal output . SOP-8 FEATURES * Wide supply voltage range of 2.5V to 20V *Output current Io(max)=600mA *Operate with Hall element *Lock protection *Auto-restart when the motor lock is undone *FG(frequency generator) output *SOP-8 package *Pb-free plating product number: SK1288L ORDERING INFORMATION Order Number Normal Lead Free Plating SK1288-S08-R SK1288L-S08-R SK1288-S08-T SK1288L-S08-T Package Packing SOP-8 SOP-8 Tape Reel Tube SK1288L-S08-R (1)Packing Type (2)Package Type (3)Lead Plating www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd (1) R: Tape Reel, T: Tube (2) S08: SOP-8 (3) L: Lead Free Plating, Blank: Pb/Sn 1 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION CT 1 8 FG VCC 2 7 HIN A2 3 6 HIP GND 4 5 A1 BLOCK DIAGRAM Vcc REGULATOR FG output H+ CONTROL BLOCK H- A1 Hysteresis amplifier LOCK PROTECTION AUTORESTART BLOCK CT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw A2 GND 2 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta = 25℃) PARAMETER SYMBOL RATINGS UNIT Supply voltage VCC 2.5V ~ 20V V Supply current ICC 20 mA Circuit current Io 600 mA FG output current IFG 20 mA Power dissipation PD 700 mW Hall input common mode voltage range VHIC 1.0 ~ VCC-0.5 V Operating ambient temperature TOPR -20 ~ +85 ℃ Storage temperature TSTG -55 ~ +150 ℃ Note 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. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range and assured by design from -20℃~+85℃. ELECTRICAL CHARACTERISTICS (Ta=25℃ , VCC=3V) PARAMETER Current drain SYMBOL ICC Lockup detection capacitor charge current Capacitor discharge current Capacitor charge/discharge current ratio CT charge voltage CT discharge voltage Output low level voltage ICT1 ICT2 RCT VCT1 VCT2 VOL Hall input sensitivity VHIN FG output pin low voltage FG output pin leakage current VFG IFG(LEAK) CONDITIONS MIN In drive mode (CT=L) In lockup protection mode (CT=H ) V 1PIN = 1.3V 0.9 V 1PIN = 1.3V 0.5 IO=200mA Zero peak value (including offset and hysteresis) IFG=5mA VFG=15V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP MAX UNIT 13 mA 3 mA 1.2 1.5 uA 0.6 0.8 uA 2.5 1.3 V 0.3 V 0.3 0.7 V 3 15 0.11 1 mV V uA 3 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VIN 10KΩ Vcc FG FG output Hall element A1 H+ A2 HCT GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 1. Icc 0V 2V FG H- H+ A1 CT Vcc A2 GND CT "H" = 2V CT "L" = 0V 5V 2. CT charge / discharge 0V 2V CT(I) discharge 0 FG H- H+ charge A1 0 CT Vcc A2 GND 2 CT(V) 0 CT(V) CT(I) discharge 0 CT = 0V ~2 V 5V charge 2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT(Cont.) 3. VOL 0V FG CT 2V H - H+ A1 Vcc A 2 GND H+ H- A1 A2 FG H L L H H L H H L L 200mA Output "L" DC V 5V 4. Hall input offset 2V 1.5V ~2.5V 10K FG H - H+ A1 CT Vcc A 2 GND 5V V 5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT (Cont.) 5. VFGL & I FGL 2V 0V 5mA FG DC FG = L VFGL FG CT H - Vcc H+ V A1 A 2 GND 2V FG I IFGL 5V 6. FG leakage 0V 2V 15V I FG = H FG CT H - Vcc H+ A 2 A1 GND 5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R109-024,A SK1288 LINEAR INTEGRATED CIRCUIT LOCK DETECTION H+ ON OFF A2 CT Motor locked ton Reverts to normal operation toff Motor lock detected Motor lock cleared FG output OFF 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 8 of 8 QW-R109-024,A