AAT2842INJ-EE-T1 Advanced Analog Technology, Inc., AAT2842INJ-EE-T1 Datasheet - Page 7

• Manufacturer Part Number: AAT2842INJ-EE-T1
• Description: High-Current Charge Pump with S2Cwire Control and Dual LDO for Backlight and Flash
• Manufacturer: Advanced Analog Technology, Inc.

Typical Characteristics
V
otherwise noted. Typical values are at T
2842.2007.09.1.2
(500mV/div)
(200mA/div)
(100mA/div)
(500mV/div)
IN
= 3.6V; C
100
(2V/div)
(2V/div)
90
80
70
60
50
40
30
(2V/div)
(2V/div)
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
V
OUT
Backlight Efficiency vs. Supply Voltage
OUT
V
SINK
EN
SINK
EN
I
I
IN
IN
7.5mA/ch
V
F
IN
= 3.1V
Turn On to 2X Mode Backlight
= 4.7µF; C
Turn On to 1X Mode Backlight
(30mA/ch; Data 1; V
(30mA/ch; Data 1; V
Supply Voltage (V)
Time (200µs/div)
2.1mA/ch
V
Time (200µs/div)
OUT
F
= 2.9V
= 2.2µF; C
IN
IN
= 3.2V)
= 4.2V)
A
30mA/ch
V
Control and Dual LDO for Backlight and Flash
1
F
= 25°C.
= C
= 3.7V
High-Current Charge Pump with S
2
= 1.0µF; R
(200mA/div)
BSET
(200mA/div)
(500mV/div)
(2V/div)
(2V/div)
100
(2V/div)
(2V/div)
90
80
70
60
50
40
30
= R
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
OUT
OUT
V
SINK
EN
EN
FSET
I
I
Flash Efficiency vs. Supply Voltage
IN
150mA total
IN
V
F
Turn Off from 1.5X Mode Backlight
= 2.9V
= 280kΩ; T
Turn On to 1.5X Mode Backlight
(30mA/ch; Data 1; V
Supply Voltage (V)
(30mA/ch; Data 1)
A
Time (100µs/div)
Time (200µs/div)
= -40°C to +85°C, unless
300mA total
V
F
= 3.0V
AAT2842
IN
= 3.5V)
2
Cwire™
7