High Efficiency White LED Drivers
for Backlight and Keypad
Absolute Maximum Ratings
1
T
A
= 25°C unless otherwise noted.
Symbol
VIN, IN
SW
EN/SET, Bx, Ax,
RSET, OV, LIN
T
S
T
J
T
LEAD
AAT1235
Description
Input Voltage
Switching Node
Maximum Rating
Storage Temperature Range
Operating Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6.0
28
V
IN
+ 0.3
-65 to 150
-40 to 150
300
Units
V
V
V
°C
°C
°C
Thermal Information
2
Symbol
θ
JA
P
D
Description
Thermal Resistance
Maximum Power Dissipation
3
Value
50
2
Units
°C/W
W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at condi-
tions 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 circuit board.
3. Derate 20mW°C above 40°C ambient temperature.
1235.2007.02.1.1
3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
