AAT2847
Four-Channel Backlight Driver with Dual LDOs
Typical Characteristics
LDOA/LDOB Quiescent Current vs. Input Voltage
LDOA Load Transient Response
(VIN = 3.6V; VLDOA = 1.2V)
(VOUT = 1.2V)
120
200mA
85°C
25°C
100
80
60
40
20
0
ILDOA
(100mA/div)
10mA
VLDOA
(100mV/div)
-40°C
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Time (20µs/div)
LDOB Load Transient Response
(VIN = 3.6V; VLDOB = 1.2V)
LDOA Line Transient Response
(10mA Load)
200mA
VIN = 4.2V
ILDOB
(100mA/div)
VIN
(400mV/div)
10mA
VIN = 3.6V
VLDOB
(100mV/div)
VLDOA
(20mV/div)
Time (20µs/div)
Time (40µs/div)
LDOB Line Transient Response
(10mA Load)
VIN = 4.2V
VIN
(400mV/div)
VIN = 3.6V
VLDOB
(20mV/div)
Time (40µs/div)
2847.2007.09.1.0
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
