LB11961-W-AH ON Semiconductor

LB11961 Single-Phase Full-Wave Fan Motor Driver Overview The LB11961 is a single-phase bipolar drive motor driver that easily implements direct PWM motor drive systems with excellent efficiency. The www.onsemi.com LB11961 is optimal for fan motor drive in personal computer power supply systems and CPU cooling fan systems. Features Single-phase full-wave drive (16V, 1.0A transistors are built in) Built-in variable speed function controlled by a thermistor input The LB11961 can implement quiet, low-vibration variable speed control using externally clocked high side transistor direct PWM drive. Built-in regenerative diode (Di) only requires a minimal number of external HSSOP14 (225mil) components. Built-in HB Minimum speed setting pin (allows full-speed mode operation at startup) Operates in full-speed mode when the thermistor is removed. Built-in lock protection and automatic recovery circuits FG (speed detection) and RD (lock detection) outputs Built-in thermal shutdown circuit XXXXXXXXXX YMDDD Applications Personal computer power supply systems CPU cooling fan systems XXXXX = Specific Device Code Y = Year M = Month Specifications DDD = Additional Traceability Data Absolute Maximum Ratings at Ta = 25C (Note1) Parameter Symbol Conditions Ratings Unit ORDERING INFORMATION V maximum output voltage Vmax 18 V CC CC See detailed ordering and shipping OUT pin maximum output current I max 1.0 A OUT information on page 8 of this data OUT pin output voltage V max 18 V OUT sheet. HB maximum output current IHBmax 10 mA VTH input pin voltage VTHmax 6 V RD/FG output pin output voltage VRD/FG 18 V max RD/FG output current IRD/FG 10 mA When mounted Allowable power dissipation Pd max W on a circuit 1.1 board (Note2) Operating temperature Topr -30 to +90 C Storage temperature Tstg -55 to +150 C 1. Stresses exceeding those listed in the Maximum Rating table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 3 2. Specified circuit board : 114.3 76.1 1.6mm , glass epoxy. Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: November 2016- Rev. 1 LB11961/D LB11961 Recommended Operating Conditions at Ta = 25C (Note3) Parameter Symbol Conditions Ratings Unit V supply voltage V V 4.5 to 16 CC CC VTH input level voltage range VTH V 0 to 9 Hall sensor input common-mode VICM 0.2 to 3 V input voltage range 3. Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. Electrical Characteristics Unless otherwise specified Ta 25 C, V = 12V (Note4) CC Ratings Parameter Symbol Conditions Unit min typ max Circuit current I1 Drive mode 12 18 24 mA CC I 2 Lock protection mode 8 11 16 mA CC 6VREG voltage V6VREG I6VREG = 5mA 5.8 6 6.2 V HB voltage VHB IHB = 5mA 1.10 1.25 1.40 V CPWM high-level voltage VCRH 3.45 3.6 3.75 V CPWM low-level voltage VCRL 1.95 2.05 2.15 V CPWM oscillator frequency FPWM C = 100pF 18 25 32 kHz CT pin high-level voltage VCTH 3.45 3.6 3.75 V CT pin low-level voltage VCTL 1.55 1.7 1.85 V ICT charge current ICT1 1.5 2 2.5 A ICT discharge current ICT2 0.15 0.2 0.25 A ICT charge/discharge current RCT 8.5 10 11.5 ratio OUT output low saturation V I = 200mA 0.2 0.3 V OL O voltage OUT output high saturation V I = 200mA 0.9 1.1 V OH O voltage Hall sensor input sensitivity VHN Zero peak value (including offset and 10 20 mV hysteresis) RD/FG output pin low-level VRDL/FGL IRD/FG = 5mA 0.2 0.3 V voltage RD/FG output pin leakage IRDL/FGL VRD/FG = 7V 30 A current 4. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. Pd max Ta 1.2 3 Specified circuit board : 114.376.11.6mm 1.1 glass epoxy board 1.0 0.8 0.6 0.53 0.4 0.2 0 30 10 10 30 50 70 90 110 Ambient temperature, Ta C www.onsemi.com 2 Allowable power dissipation, Pd max W