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