Zxbm1017 – Diodes ZXBM1017 User Manual

Page 2

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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

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