AAT2803ISK-4.5-T1 AnalogicTech, AAT2803ISK-4.5-T1 Datasheet - Page 8

• Manufacturer Part Number: AAT2803ISK-4.5-T1
• Description: Six-Channel White LED Backlight Charge Pump with Flash
• Manufacturer: AnalogicTech

Typical Characteristics–White LED Backlight Driver Section
Unless otherwise noted, V
(200mA/div)
(100mA/div)
8
(500mV/div)
100
(2V/div)
(2V/div)
(2V/div)
(1V/div)
90
80
70
60
50
2.8
V
SINK
EN
CP
EN
V
I
I
IN
IN
F
3.0
Efficiency vs. Supply Voltage
V
4.1mA
F
= 2.9V
Turn-Off from 1.5X Mode
3.2
Turn-On to 1.5X Mode
Supply Voltage (V)
(V
(V
IN
IN
= 3.8V; 20mA Load)
= 3.5V; 20mA Load)
3.4
IN
V
10.2mA
F
= 3.6V, C
100μ μ s/div
100μ μ s/div
= 3.1V
3.6
3.8
IN
= C
V
F
20mA
= 3.4V
4.0
OUT
= C
4.2
1
= C
2
(200mA/div)
(200mA/div)
(500mV/div)
(500mV/div)
= C
20.2
20.0
19.8
19.6
19.4
19.2
(2V/div)
(2V/div)
(2V/div)
(2V/div)
3
Six-Channel White LED Backlight
-40
= 1.0μF; T
V
V
SINK
SINK
EN
CP
EN
CP
I
I
IN
IN
Current Matching vs. Temperature
-20
A
Charge Pump with Flash
Channel 2
= 25°C.
0
Turn-On to 1X Mode
Turn-On to 2X Mode
Temperature (° ° C)
(V
(V
IN
IN
= 4.2V; 20mA Load)
= 2.8V; 20mA Load)
20
100μ μ s/div
100μ μ s/div
Channel 1
40
Channel 3
Channel 4
2803.2006.04.1.5
Channel 6
60
Channel 5
80