A8131
LED BACKLIGHT DRIVER
AiT Semiconductor Inc.
www.ait-ic.com
PWM/PFM AUTOMATIC CONTROLLED DC-DC CONVERTERS
ELECTRICAL CHARACTERISTICS
VIN=5V ,CIN=4.7uF ,COUT=10uF ,L=2.2uH, TA=25℃, unless otherwise noted
Parameter
Feedback Voltage
Input Voltage Range
Line regulation
Symbol
Conditions
Min.
Typ.
0.1
-
Max.
Unit
V
VFB
0.09
0.11
VIN
2
-
6
ΔVOUT
EFFI
IL=300mA
IL=200mA
0.45
92
-
-
%
%
Efficiency
-
-
CE ”Low” voltage
CE ”High” voltage
Shutdown Current
Quiescent Current
Switch Current Limit
PFM switching point
Oscillation Frequency
Maximum Duty Cycle
Thermal Shutdown
Thermal Hysteresis
VCEL
VCEH
ISHDN
IDD
-
0.9
V
1.1
-
-
V
VCE=0V, VIN=5V
VFB=0.1V*0.9
-
1
µA
µA
mA
mA
MHz
%
-
-
-
-
-
-
-
300
1200
100
1.4
-
-
ILIM
-
IL
VIN=5V
-
fOSC
ILED=500mA
-
MAXDTY
TSD
100
150
20
-
-
℃
THYST
℃
REV1.1
- JAN 2014 RELEASED, AUG 2017 UPDATED -
- 3 -
AITSEMI [ AiT Semiconductor ]
