AAT2846
High Current Charge Pump with Dual LDO
for Backlight and Flash Applications
Typical Characteristics
LDOs A and B Load Regulation
LDOs A and B Turn On Characteristic
1.0
0.5
VEN
(2V/div)
0V
0V
OUTA
OUTB
0.0
VOUT
(500mV/div)
-0.5
-1.0
0.1
1
10
100
1000
Time (50µs/div)
Load Current (mA)
LDOs A and B Output Voltage
vs. Temperature
LDOs A and B Load Regulation
1.5
1.0
0.5
1
0.5
0
OUTA
OUTB
0.0
-0.5
-1
-0.5
-1.0
0.1
-1.5
-40
1
10
100
1000
-15
10
35
60
85
Load Current (mA)
Temperature (°C)
LDOs A and B Dropout Characteristics
LDOs A and B Line Transient Response
(10mA Load)
3.2
3.0
2.8
2.6
2.4
2.2
2.0
IOUT = 100mA
VIN = 3.6V
VIN
(250mV/div)
VIN = 3.1V
IOUT = 200mA
VOUT
(AC Coupled)
(20mV/div)
2.7
2.8
2.9
3.0
3.1
3.2
Time (50µs/div)
Input Voltage (V)
2846.2007.08.1.0
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
