PRODUCT DATASHEET
AAT2846
ChargePumpTM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Typical Characteristics
LDOs A and B Turn On Characteristic
LDOs A and B Load Regulation
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 Dropout Characteristics
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.5
1
IOUT = 100mA
0.5
0
IOUT = 200mA
-0.5
-1
-1.5
-40
2.7
2.8
2.9
3.0
3.1
3.2
-15
10
35
60
85
Temperature (°C)
Input Voltage (V)
LDOs A and B Line Transient Response
LDOs A and B Load Transient Response
(10mA Load)
(10mA to 200mA Load Step)
VIN = 3.6V
IOUT = 200mA
VIN
IOUT
(100mA/div)
(250mV/div)
VIN = 3.1V
VOUT
(AC Coupled)
(20mV/div)
VOUT
(AC Coupled)
(100mV/div)
Time (50µs/div)
Time (50µs/div)
w w w . a n a l o g i c t e c h . c o m
8
2846.2008.03.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
