AAT3164 Datasheet, PDF (5/14 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump for Six-Channel White LED Applications

AAT3164
High Efficiency 1X/1.5X/2X Charge Pump for
Six-Channel White LED Applications
Typical Characteristics
C_IN = C_OUT = C₁ = C₂ = 1.0µF; T_A = 25°C, R_SET = 26.1kΩ, V_IN = 3.6V, unless otherwise noted.
Efficiency vs. Supply Voltage
100
90
80
70
60
50
2.8
5.0mA/ch
V_F = 2.9V
10.2mA/ch
V_F = 3.1V
20mA/ch
V_F = 3.4V
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Supply Voltage (V)
EN
(2V/div)
CP
(2V/div)
V_SINK
(500mV/div)
I_IN
(200mA/div)
Turn-On to 1X Mode
(V_IN = 4.2V; 20mA/Channel; Data 1)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
V_SINK
(500mV/div)
I_IN
(200mA/div)
Turn-On to 1.5X Mode
(V_IN = 3.8V; 20mA/Channel; Data 1)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
V_SINK
(500mV/div)
I_IN
(200mA/div)
Turn-On to 2X Mode
(V_IN = 2.8V; 20mA/Channel; Data 1)
Time (100µs/div)
EN
(2V/div)
V_F
(1V/div)
I_IN
(100mA/div)
Turn-Off from 1.5X Mode
(V_IN = 3.5V; 20mA/Channel; Data 1)
Time (100µs/div)
Current Matching vs. Temperature
20.2
20.0
19.8
19.6
19.4
19.2
-40
Channel 2
Channel 1
Channel 5
Channel 3
Channel 4
Channel 6
-20
0
20
40
60
80
Temperature (°C)
3164.2006.07.1.0
5