AAT2856 AAT, AAT2856 Datasheet - Page 7

• Manufacturer Part Number: AAT2856
• Description: High Current Charge Pump
• Manufacturer: AAT

Typical Characteristics
(200mA/div)
(200mA/div)
2856.2007.06.1.0
(500mV/div)
(500mV/div)
100
(2V/div)
(2V/div)
(2V/div)
(2V/div)
90
80
70
60
50
40
30
2.7
V
V
V
V
Backlight Efficiency vs. Input Voltage
V
V
SINK
SINK
OUT
OUT
10.2mA/ch 1.6mA/ch
I
I
EN
EN
IN
IN
3.1
0V
0V
0V
Turn On to 1X Mode Backlight
Turn On to 2X Mode Backlight
0V
0V
0V
3.5
(30mA/ch; Data 1; V
(30mA/ch; Data 1; V
0A
Input Voltage (V)
0A
3.9
Time (200µs/div)
Time (200µs/div)
4.3
IN
IN
4.7
= 4.2V)
= 2.7V)
20mA/ch
5.1
5.5
Dual LDO for BacklightApplications
(200mA/div)
(200mA/div)
(500mV/div)
20.5
19.5
18.5
High Current Charge Pump with
Backlight Current Matching vs. Temperature
(2V/div)
(2V/div)
(2V/div)
(2V/div)
21
20
19
-40
V
V
V
V
V
SINK
OUT
OUT
EN
I
EN
I
IN
IN
Turn Off from 1.5X Mode Backlight
0V
Turn On to 1.5X Mode Backlight
-15
0V
0V
(30mA/ch; Data 1; V
(20mA/Ch; Data 1)
0A
Temperature (°C)
10
(30mA/ch; Data 1)
Time (200µs/div)
Time (100µs/div)
35
0V
AAT2856
IN
0V
0A
= 3.4V)
60
85
7