High Efficiency 1X/1.5X/2X Charge Pump for
Six-Channel White LED Applications
Typical Characteristics
C
IN
= C
OUT
= C
1
= C
2
= 1.0µF; T
A
= 25°C, R
SET
= 26.1kΩ, V
IN
= 3.6V, unless otherwise noted.
Load Characteristics
(V
IN
= 3.8V; 1.5X Mode; 14.2mA/Channel; Data 3)
V
IN
(40mV/div)
CP
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
AAT3164
Load Characteristics
(V
IN
= 2.9V; 2X Mode; 14.2mA/Channel; Data 3)
V
SINK
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(V
IN
= 4.0V; 1.5X Mode; 20mA/Channel; Data 1)
V
IN
(40mV/div)
CP
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
Load Characteristics
(V
IN
= 3.1V; 2X Mode; 20mA/Channel; Data 1)
V
SINK
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
T
LAT
vs. V
IN
350
300
250
400
350
T
OFF
vs. V
IN
-40°C
T
OFF
(μs)
μ
300
250
200
150
100
50
0
-40°C
T
LAT
(μs)
μ
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
25°C
85°C
25°C
85°C
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
IN
(V)
V
IN
(V)
6
3164.2006.07.1.0