Test Circuits
Input
V
KA
Input
I
KA
V
KA
Input
V
KA
I
off
I
KA
R1
Iref
Vref
R2
Vref
R1
V
KA
= Vref (1+
) + Iref x R1
R2
Test Circuit 1:
V
KA
= V
REF
Test Circuit 2:
V
KA
> V
REF
Test Circuit 3:
Off State Current
Application Diagram
Thermal Consideration
Package
Power Rating
(T
A
=25
°C
)
SOT-23-3 (θ
JA
=230°C/W)
SOT-23-5L (θ
JA
=230°C/W)
TO-92 (θ
JA
=220°C/W)
1. Maximum junction temperature is 125°C
2.
θ
JA
is measured with packages mounted onboard under still-air condition with 1W power applied.
3. Power rating is calculated using P
D
= (T
J
– T
A
) /θ
JA,
where T
J
denotes junction temperature and T
A
denotes ambient temperature.
Power Rating
(T
A
=50
°C
)
326mW
326mW
341mW
Power Rating
(T
A
=70
°C
)
239mW
239mW
250mW
435mW
435mW
455mW
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 5
SEAWARD [ Seaward Electronics Inc. ]
