SK1288

SK1288 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD SK1288 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 8 Copyright © 2005 Unisonic Technologies Co., Ltd QW-R109-024,A 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 . „ 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 SOP-8 *Pb-free plating product number: SK1288L „ ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing SK1288-S08-R SK1288L-S08-R SOP-8 Tape Reel SK1288-S08-T SK1288L-S08-T SOP-8 Tube SK1288L-S08-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) S08: SOP-8 (3) L: Lead Free Plating , Blank: Pb/Sn

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 8 www.unisonic.com.tw QW-R109-024,A „ PIN CONFIGURATION GND HIP HIN 6A2 CT VCC FG „ BLOCK DIAGRAM 3&(6-"503 $0/530- #-0$, -0$,1305&$5*0/ "6503&45"35 #-0$, (/% '(PVUQVU 7DD )ZTUFSFTJT BNQMJGJFS

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 8 www.unisonic.com.tw QW-R109-024,A „ ABSOLUTE MAXIMUM RATINGS (Ta = 25Ċ) PARAMETER SYMBOL RATINGS UNIT Supply voltage V CC 2.5V ~ 20V V Supply current I CC 20 mA Circuit current Io 600 mA FG output current I FG 20 mA Power dissipation P D 700 mW Hall input common mode voltage range V HIC 1.0 ~ V CC-0.5 V Operating ambient temperature T OPR -20 ~ +85 Ċ Storage temperature T STG -55 ~ +150 Ċ 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=25Ċ , VCC=3V) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT In drive mode (CT=L) 13 mACurrent drain I CC In lockup protection mode (CT=H ) 3 mA Lockup detection capacitor charge current I CT1 V 1PIN = 1.3V 0.9 1.2 1.5 uA Capacitor discharge current I CT2 V 1PIN = 1.3V 0.5 0.6 0.8 uA Capacitor charge/discharge current ratio R CT 2.5 CT charge voltage V CT1 1.3 V CT discharge voltage V CT2 0.3 V Output low level voltage V OL I O=200mA 0.3 0.7 V Hall input sensitivity V HIN Zero peak value (including offset and hysteresis) 3 15 mV FG output pin low voltage V FG I FG=5mA 0.11 V FG output pin leakage current I FG(LEAK) VFG=15V 1 uA

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 8 www.unisonic.com.tw QW-R109-024,A „ TYPICAL APPLICATION CIRCUIT Vcc FG GND VIN FG output 10KƸ CT Hall element

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 8 www.unisonic.com.tw QW-R109-024,A „ TEST CIRCUIT FG H- H+ A1 CT Vcc A2 GND 1. Icc 0V 2V CT "H" = 2V CT "L" = 0V FG H- H+ A1 CT Vcc A2 GND 0V 2V 5VCT = 0V ~2 V 2. CT charge / discharge CT(V) CT(I) CT(V) CT(I) charge discharge discharge charge

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 8 www.unisonic.com.tw QW-R109-024,A „ TEST CIRCUIT(Cont.) FG H - H+ A1 CT Vcc A 2 GND 0V 2V 3. VOL H + H- A1 A2 FG H L L H H L H H L L DC V Output 200mA 4. Hall input offset FG H - H+ A1 CT Vcc A 2 GND 2V 1.5V ~2.5V V 10K 5V "L"

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 of 8 www.unisonic.com.tw QW-R109-024,A „ TEST CIRCUIT (Cont.) 5. VFGL & IFGL FG H - H+ A1 CT Vcc A 2 GND 2V 0V V FG 5mA IFG DC VFGL IFGL 6. FG leakage FG H - H+ A1 CT Vcc A 2 GND 0V 2V I 15V FG = H FG = L

SK1288 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 8 of 8 www.unisonic.com.tw QW-R109-024,A „ LOCK DETECTION CT ON OFF Motor locked Motor lock detected ton toff Motor lock cleared Reverts to normal operation 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.