AAT2846
High Current Charge Pump with Dual LDO
for Backlight and Flash Applications
Typical Characteristics
Turn On to 2X Mode Backlight
Turn Off from 1.5X Mode Backlight
(30mA/ch; Data 1; VIN = 2.7V)
(30mA/ch; Data 1)
VEN
(2V/div)
VEN
(2V/div)
0V
0V
0V
VOUT
VOUT
(2V/div)
(2V/div)
VSINK
(500mV/div)
0V
0A
0V
IIN
(200mA/div)
IIN
0A
(200mA/div)
Time (200µs/div)
Time (100µs/div)
BENS, FENS Low Threshold Voltage
vs. Input Voltage
BENS, FENS High Threshold Voltage
vs. Input Voltage
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
-40°C
-40°C
25°C
85°C
85°C
25°C
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
BENS, FENS Latch Timeout vs. Input Voltage
BENS, FENS Off Timeout vs. Input Voltage
300
260
240
260
220
180
140
100
25°C
220
25°C
-40°C
200
-40°C
180
85°C
160
25°C
140
120
100
80
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
8
2846.2007.08.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
