PRODUCT DATASHEET
AAT1
149B
SwitchReg
TM
Absolute Maximum Ratings
1
Symbol
V
IN
V
LX
V
FB
V
EN
T
J
T
LEAD
2.2MHz Fast Transient 400mA Step-Down Converter
Description
Input Voltage to GND
LX to GND
FB to GND
EN to GND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
6.0
-0.3 to V
IN
+ 0.3
-0.3 to V
IN
+ 0.3
-0.3 to 6.0
-40 to 150
300
Units
V
V
V
V
°C
°C
Thermal Information
Symbol
P
D
θ
JA
Description
Maximum Power Dissipation
Thermal Resistance
2
2, 3
Value
352
284
Units
mW
°C/W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board; use the NSMD (none-solder mask defined) pad style for tighter control on the copper etch process.
3. Derate 3.52 mW/°C above 25°C.
1149B.2008.07.1.0
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