Ordering number: EN3519A Monolithic Digital IC LB1860,1860M,1861,1861M Variable Speed Fan Motor Driver Overview Package Dimensions unit: mm The LB1860 series ICs are drivers for two-phase unipolar drive 3098B-DIP10S DC brushless fan motors. They have functions such as driving, lock protection, restart and speed control. LB1860, 1861 Features and Functions . Two-speed mode select function requiring less external component additions: Full speed and Low speed. Or, thermistor-controlled continuous variable-speed function according to ambient operation temperatures. Motor starts rotating at a low speed Motor lock protection and automatic return circuit built in . Output transistors: Output current I = 1.5A, output circuit O protection Zener diodes (LB1860: M-Vz = 57 V/ LB1861: M-Vz = 32 V) Enables low-level noise protection with chip capacitor Built-in thermal shutdown circuit . Built-in rotation detect function (Drive mode: L, Stop mode: H) SANYO : DIP10S . The LB1860 series can be operated from either 12V or 24V power supply by changing an external resistor. unit: mm (Strong protection against power supply surge) . Connectable direct to a Hall element 3111-MFP14S LB1860M, 1861M SANYO : MFP14S SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters LB1860,1860M,1861,1861M Specifications Absolute Maximum RatingsatTa=25 C, ( ): LB1860M, LB1861M Parameter Symbol Conditions Ratings Unit Maximum input current I max t% 20 ms 200 mA CC Output supply voltage V Internal V OUT Output current I 1.5 A OUT RD flow-in current I 10 mA RD RD supply voltage V 50 V RD Pd1 max 1.1 W Allowable power dissipation Pd2 max Mountedon20 15 1.5mmglassepoxyboard (0.8) W Operating temperature Topr 30to+80 C Storage temperature Tstg 55to+125 C Allowable Operating RangesatTa=25 C Parameter Symbol Conditions Ratings Unit Input current range I 6.0to50 mA CC Common-mode input voltage range V 0toV 1.5 V ICM IN Electrical CharacteristicsatTa=25 C, I =10mA CC Parameter Symbol Conditions min typ max Unit LB1860, 1860M: I = 0.1A 54 57 60 V O Output limiting voltage V 1 OLM LB1861, 1861M: I = 0.1A 30 32 34 V O V I = 0.5A 0.95 1.2 V O sat1 O Output saturation voltage V I = 1.0A 1.15 1.5 V O sat2 O V I = 1.5A 1.4 2.0 V O sat3 O Input voltage V I = 7.0 mA 6.4 6.7 7.0 V IN CC Amp input offset voltage V 7.0 0 7.0 mV OFF Amp input bias current I 250 nA BA RD output saturation V (sat) I = 5 mA 0.15 0.3 V RD RD voltage C flow-out current I 1 C = GND 2.7 3.9 5.0 A C C discharge current I 2 C=V 0.35 0.50 0.65 A C IN V 1 0.77 0.8V 0.83 V Comparator input threshold TH IN voltage V 2 0.44 0.47V 0.50 V TH IN Ct discharge voltage Vct 0.18 0.2V 0.22 V IN Rt input current I V = GND 440 350 240 A RT RT Rt comparator voltage V R = OPEN 0.59 0.62V 0.65 V RT T IN Thermal protection circuit TSD Design target 180 C operating voltage Thermal protection circuit TSD Design target 40 C hysteresis Pin Assignments Top view Top view No.3519-2/6