Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics– White LED Backlight Driver Section
Load Characteristics
(V
IN
= 3.7V; 1.5X Mode; 14mA Load)
AAT2806
Load Characteristics
(V
IN
= 2.7V; 2X Mode; 14mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(V
IN
= 3.9V; 1.5X Mode; 20mA Load)
Load Characteristics
(V
IN
= 2.9V; 2X Mode; 20mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
EN/SET Latch Timeout vs. Input Voltage
EN/SET Latch Timeout (μs)
μ
350
400
EN/SET Off Timeout vs. Input Voltage
EN/SET Off Timeout (μs)
μ
300
250
200
150
100
50
0
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
350
300
250
200
150
100
50
0
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
-40°C
-40°C
25°C
85°C
25°C
85°C
Input Voltage (V)
Input Voltage (V)
8
2806.2006.04.1.8
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
