zxct1012 Zetex Semiconductors plc., zxct1012 Datasheet - Page 7

• Manufacturer Part Number: zxct1012
• Description: Zxct1012 - Reduced Height Micro-power Current Monitor
• Manufacturer: Zetex Semiconductors plc.

Power dissipation
The maximum allowable power dissipation of the device for normal operation (P
function of the package junction to ambient thermal resistance (
temperature (T
The device power dissipation, P
Care must be taken when using this device at large input voltages and large sense voltages to
prevent too much power dissipation.
V
R
I
V
∴ P
Issue 1 - December 2006
© Zetex Semiconductors plc 2006
OUT
IN
OUT
OUT
P
P
D
MAX
D
=I
600
500
400
300
200
100
OUT
0
= (T
0
= 20V
= 100
= 2.5 x 0.01
= 25mA
= I
= 25mA x 100
= 2.5V
= 25mA (20 - 2.5)V
= 438mW
.(V
OUT
JMAX
IN
25
JMAX
-V
TA - Ambient temperature (°C)
x R
OUT
Power Dissipation
– T
OUT
), and ambient temperature (T
50
amb
) watts
V
SENSE
) /
75
JA
= 2.5V
100
D
is given by the expression:
TDFN3x3-5
TSOT23-5
125
150
7
amb
), according to the expression:
JA
), maximum junction
ZXCT1012
www.zetex.com
MAX
), is a