Diodes ZXBM1017 - Manual (Page 2)

1) Maximum allowable Power Dissipation, P D , is
shown plotted against Ambient Temperature,T A ,
in the accompanying Power Derating Curve,
indicating the Safe Operating Area for the device.
2) Power consumed by the device, PT, can be
calculated from the equation:
P T = P Q + P PhHi + P PhLo + P TR + P HB + P FGRD
where P Q i s power dissipated under quiescent
current conditions, given by:
P Q = V CC x I CC
where Vcc is the maximum application
device Supply Voltage
and Icc is the maximum Supply Current
given in the Electrical Characteristics
and P PhHi is power generated due to either one
of the phase outputs Ph1Hi or Ph2Hi being
active, given by:
P PhHi = I OL x V OL
where I OL is the maximum application
Ph1Hi and Ph2Hi output currents
and V OL is the maximum Low Level Output
Voltage for the Ph1Hi and Ph2Hi outputs
given in the Electrical Characteristics
and P PhLo is power generated due to either one
of the phase outputs Ph1Lo or Ph2Lo being
active, given by:
P PhLo = I OH x (V CC - V OH )
where IOH is the maximum application
Ph1Lo and Ph2Lo output currents
and V CC is the maximum application device
Supply Voltage
and V OH is the minimum High Level Output
Voltage for the Ph1Lo and Ph2Lo outputs
given in the Electrical Characteristics.
and P TR is power generated due to the Network
Reference source current, given by:
P TR = I OThRef x (V CC - V ThRef )
where I OThRef is the maximum application
ThRef output current
and V CC is the maximum application device
Supply Voltage
and V ThRef is the Network Reference
voltage
and P HB is power generated due to the Hall Bias
source current, given by:
P HB = I HB x (V CC - V HB )
where I HB is the maximum application Hall
Bias output current
and V HB is the Hall Bias voltage
and P FGRD is power generated due to either or
both the Frequency Generator and Locked
Rotor Detect outputs being active, given by:
P FGRD = I OL x V OL
where I OL is the maximum application FG
or RD output current
and V OL is the FG or RD Low Level Output
Voltage
ZXBM1017
ISSUE 4 - MAY 2007
2
Parameter Symbol Limits Unit
Supply Voltage VCCmax -0.6 to 20 V
Input Current ICCmax 200 mA
Maximum Input Voltage VImax -0.6 to Vcc+0.5 V
Maximum Output Voltage VOmax -0.6 to Vcc+0.5 V
Power Dissipation PDmax 800 mW
Operating Temp. TOPR -40 to 110 °C
Storage Temp. TSTG -55 to 150 °C
Absolute Maximum Ratings