AAT1157
1MHz 1.2A Buck DC/DC Converter
Absolute Maximum Ratings
1
Symbol
V
CC
, V
P
V
LX
V
FB
V
EN
T
J
V
ESD
Description
V
CC
, V
P
to GND
LX to GND
FB to GND
EN to GND
Operating Junction Temperature Range
ESD Rating
2
- HBM
Value
6
-0.3 to V
P
+ 0.3
-0.3 to V
CC
+ 0.3
-0.3 to -6
-40 to150
3000
Units
V
V
V
V
°C
V
Thermal Characteristics
Symbol
θ
JA
θ
JC
P
D
Description
Maximum Thermal Resistance (QFN33-16)
3
Maximum Thermal Resistance (QFN33-16)
Maximum Power Dissipation (QFN33-16) (T
A
= 25°C)
3, 4
Value
50
4.2
2.0
Units
°C/W
°C/W
W
Recommended Operating Conditions
Symbol
T
Description
Ambient Temperature Range
Value
-40 to 85
Units
°C
1. Stresses above those listed in Absolute Maximum Ratings may cause 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. Human body model is 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
3. Mounted on a demo board (FR4, in still air). Exposed pad must be mounted to PCB.
4. Derate 20mW/°C above 25°C.
1157.2005.11.1.4
3
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