Diodes ZXBM1017 User Manual

DESCRIPTIONThe ZXBM1017 is a Single-Phase, DC brushless motorpre-driver with PWM variable speed control andcurrent limit features suitable for fans, b

ZXBM101710ISSUE 4 - MAY 2007EuropeZetex GmbHKustermann-ParkBalanstraße 59D-81541 MünchenGermanyTelefon: (49) 89 45 49 49 0Fax: (49) 89 45 49 49 49euro

1) Maximum allowable Power Dissipation, PD, isshown plotted against Ambient Temperature,TA,in the accompanying Power Derating Curve,indicating the S

ZXBM1017ISSUE 4 - MAY 20073PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONSSupplyVoltage VCC6.7 - 18 V (3)Current ICC- 11 14.5 mA No load(1)Hall connec

ZXBM1017ISSUE 4 - MAY 20074PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONSPWM OscillatorCPWMCharge Current IPWMC-5.3 - -9.1 ␮ACPWMDischarge Current IP

ZXBM1017ISSUE 4 - MAY 20075Speed&LockDetectHallRDCLCKCPWMSPDH+H-HallAmpPWMOscLockedRotorDetectPhaseDrive&ControlGndVccSet MinSpeedVrefSMINThRe

PIN FUNCTIONAL DESCRIPTIONH+ - Positive Hall inputH- - Negative Hall inputThe rotor position is detected by a Hall sensor, with theoutput applied t

As these threshold voltages are nominally set to VTHH= 3V and VTHL= 1V the equations can be simplified asfollows:tCICIPWMPWMC PWMD=+22CLCK- Locked Rot

VCC- Applied VoltageThis is the device internal circuitry supply voltage. For5V to 12V fans this can be supplied directly from the FanMotor supply. Fo

ZXBM1017ISSUE 4 - MAY 20079DefinitionsProduct changeZetex Semiconductors reserves the right to alter, without notice, specifications, design, price or