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