PRODUCT DATASHEET
AAT2860
TM
ChargePump
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Typical Characteristics
Operating Characteristic
LDOs A/B/C Load Regulation
(30mA/Channel Backlight; 2x Mode; VIN = 3.2V; COUT = 2.2µF)
(VIN = 3.6V)
1.5
1.0
VLDO = 3.0V
VLDO = 1.5V
20
10
0
0.5
20
10
0
0.0
-0.5
-1.0
-1.5
-10
-20
0.1
1
10
100
1000
Load Current (mA)
Time (500ns/div)
LDO Output Voltage vs Temperature
LDOs A/B/C Line Regulation
(VIN = 3.6V; ILDO = 0mA)
(ILDO = 10mA)
1.5
1.0
1.5
VLDO = 3.0V
VLDO = 1.5V
VLDO = 3.0V
VLDO = 1.5V
1
0.5
0
0.5
0.0
-0.5
-1
-0.5
-1.0
-1.5
-1.5
-40
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
-15
10
35
60
85
Temperature (°C)
Input Voltage (V)
LDOs A/B/C Load Transient Response
LDOs A/B/C Line Transient Response
(ILDO = 10mA to 200mA; VIN = 3.6V; VLDO = 1.8V; CLDO = 2.2µF)
(VIN = 3.6V to 4.2V; ILDO = 10mA; VLDO = 1.8V; CLDO = 2.2µF)
200
100
0
4.4
4.0
3.6
2.00
1.90
1.80
1.70
1.60
1.82
1.81
1.80
1.79
1.78
Time (20µs/div)
Time (1ms/div)
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2860.2008.05.1.0
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
