ADT7221
Absolute Maximum Ratings
Parameter
Power supply voltage
Power dissipation (Ta=70℃) (Note1)
Storage temperature
Junction temperature
Thermal resistance
Symbol
V
IN
P
Dmax
T
STG
T
Jmax
Θ
JA
Min.
-
-
-65
-
-
Typ.
-
-
-
-
301.2
Max.
23
265
+150
+150
-
Unit
V
mW
℃
℃
℃/W
Note1. derate 301℃/W above +70℃.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Operating Ratings
Parameter
Power supply voltage
*2
Operating temperature
Junction temperature
Max. power dissipation (Ta=70℃)
*1
Symbol
V
IN
T
OPR
T
J
P
D
Min.
7.0
-20
-
-
Typ.
12.0
-
-
-
Max.
15.0
+85
+125
180
Unit
V
℃
℃
mW
*1 This spec. indicates that junction temperature of the device is under 125℃. In specific applications ,
this is recommended under this power dissipation specification.
*2 Maximum V
IN
operating range can be extended. In this case, maximum drive current is limited.
For using V
IN
over 15V, refer to the
Table B.
Table B
: Maximum drive current as maximum V
IN
operating voltage.
V
IN
(V)
Drive current (㎃)
16
330
17
310
18
290
19
270
20
250
21
230
22
210
Electrical Characteristics (Ta=25℃, V
IN
=12V, unless otherwise noted)
Parameter
Supply current, operating
PWM controller
Efficiency
Oscillator frequency
Output voltage
LDO
Output voltage
Output drive current
Load regulation
Line regulation
I
O
=300mA
-
I
O
=0 to 350mA
V
IN
=7V to 15V, I
O
=350mA
4.75
-
-
-
5.0
300
150
20
5.25
350
-
-
V
mA
mV
mV
I
O
=300mA
-
I
O
=300mA
(measured at FB pin voltage)
-
350
5.25
77
500
5.5
-
625
5.75
%
kHz
V
I
O
=0mA
I
O
=300mA
Condition
Min.
-
-
Typ.
3
10
Max.
-
15
Unit
mA
mA
Note
* This specifications are subject to be changed without notice
Jun. 16. 2008 / Rev. 0.1
4/6
http://www.ad-tech.co.kr
ADTECH [ ADTECH ]
