LV8805SV Bi-CMOS LSI www.onsemi.com Fan Motor Driver for PC and Server Overview The LV8805SV is a motor driver for PC and server fans. Feature Direct PWM three-phase sensorless motor driver. Typical Applications PC and Server Refrigerator SSOP20J (225mil) Server Desktop Computer Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit V maximum supply voltage V max 16 V CC CC VG maximum supply voltage VG max 21 V OUT pin withstand voltage V max 16 V OUT OUT pin maximum output I max UO pin, VO pin, WO pin 1.2 A OUT SOFTST pin withstand voltage V max 6 V SOFTST FR pin withstand voltage V max 6 V FR PWMIN pin withstand voltage V max 6 V PWMIN FG output pin withstand voltage V max 16 V FG FG pin output current I max 5 mA FG RD output pin withstand voltage VRD max 16 V RD pin output current IRD max 5 mA Allowable Power dissipation 1 Pd max1 Independent IC 0.3 W Allowable Power dissipation 2 Pd max2 Mounted on designated board *1 0.95 W Operating temperature Topr 40 to +95 C Storage temperature Tstg *2 55 to +150 C *1: When mounted on the designated 76.1mm 114.3mm 1.6mm, glass epoxy board (single-layer) *2: Do not exceed Tjmax=150C. Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding those listed in the Maximum Ratings 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. ORDERING INFORMATION See detailed ordering and shipping information on page 11 of this data sheet. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number : April 2015 - Rev. 4 LV8805SV/D LV8805SV Recommended Operating Conditions at Ta = 25C Parameter Symbol Conditions Ratings Unit V supply voltage V 6 to 15 V CC CC SOFTST input voltage range V 0 to VREG V SOFTST FR input voltage range V 0 to VREG V FR MINSP input voltage range V 0 to VREG V MINSP 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 at Ta 25 C, V = 12V, unless otherwise specified CC Ratings Parameter Symbol Conditions Unit min typ max Circuit current 1 I1 2.6 3.6mA CC Charge pump block Charge pump output voltage V 17 V VG Regulator block 5V regulator voltage V 4.75 5 5.25 V VREG Output on resistance Sum of high-/low-side output transistor on Ron (H+L) I = 0.7A, V = 12V, VG = 17V 1.2 2 O CC resistance Startup oscillator (OSC) pin OSC pin charge current I C -2.5 A OSC OSC pin discharge current I D 2.5 A OSC PWM input (PWMIN) pin High-level input voltage range V H 2.3 VREG V PWMIN Low-level input voltage range V L 0 1 V PWMIN Range of PWM input frequency f 15 60 kHz PWMIN Minimum pulse width T Input HIGH voltage 5 V and 0.2 s MINPW input LOW voltage 0 V Duty cycle range is determined by (T x f ) x 100% for minimum MINPW PWMIN (1 T x f ) x 100% for maximum MINPW PWMIN When f = 60 kHz , the input PWM duty cycle range = 1.2% - 98.8% PWMIN When f = 50 kHz , the input PWM duty cycle range = 1.0% - 99.0% PWMIN When f = 25 kHz , the input PWM duty cycle range = 0.5% - 99.5% PWMIN When f = 15 kHz , the input PWM duty cycle range = 0.3% - 99.7% PWMIN Forward/reverse switching pin High-level input voltage range V H Order of current application : 2.3 VREG V FR UOUTVOUTWOUT Low-level input voltage range V L Order of current application : 0 1 V FR UOUTWOUTVOUT FG and RD output pins FG output pin low-level voltage V When I is 2mA 0.25 0.35 V FG O FG output pin leak voltage ILFG When V is 16V 1 A FG RD output pin low-level voltage V When I is 2mA 0.25 0.35 V RD O RD output pin leak voltage ILRD When V is 16V 1 A RD Current limiter circuit Limiter voltage V Limit current set to 1A when RF is 0.25. 0.225 0.25 0.275 V RF Constraint protection circuit CT pin high-level voltage VH 2.25 2.8 2.95 V CT CT pin low-level voltage VL 0.43 0.5 0.65 V CT CT pin charge current IC 2.9 2.5 2.1 A CT CT pin discharge current ID 0.21 0.25 0.32 A CT ICT charge/discharge ratio R 7 10 13 CT Continued on next page. www.onsemi.com 2