PRODUCT DATASHEET
AAT3192
TM
ChargePump
2-Channel Charge-Pump LED Driver
Typical Characteristics
Shutdown Current vs. Temperature
Operating Current (No Load)
vs. Input Voltage
0.010
0.008
3.60
3.50
3.40
0.006
85°C
5.5V
3.30
25°C
0.004
3.20
0.002
3.10
0°C
2.7V
-45°C
0.000
3.00
-40
-15
10
35
60
85
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Temperature (°C)
VIN (V)
Efficiency vs. Input Voltage
Current Matching vs. Temperature
21.0
20.5
20.0
19.5
19.0
18.5
18.0
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
D1
30mA
VF = 3.8V
20mA
10mA
VF = 3.2V
D2
VF = 3.5V
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
-40
-15
10
35
60
85
Input Voltage (V)
Temperature (°C)
Turn On to 2X Mode
Turn Off from 2X Mode
(VIN = 3.6V; 19.6mA/ch)
(2X Mode; 19.6mA/ch)
EN/SET
(2V/div)
EN/SET
(2V/div)
VF
(2V/div)
VF
(1V/div)
VSINK
(2V/div)
IIN
IIN
(200mA/div)
(200mA/div)
Time (200µs/div)
Time (200µs/div)
w w w . a n a l o g i c t e c h . c o m
6
3192.2008.07.1.3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
