PRODUCT DATASHEET
AAT3195
ChargePump
TM
4-Channel Charge-Pump LED Driver
Typical Characteristics
Transition of LED Current
(1.3mA to 20.5mA)
Transition of LED Current
(20.5mA to 1.3mA)
EN
(2V/div)
V
OUT
(1V/div)
V
SINK
(1V/div)
I
IN
(50mA/div)
4.2V
1.5V
EN/SET
(2V/div)
V
OUT
(1V/div)
V
SINK
(1V/div)
I
IN
(50mA/div)
4.0V
0.5V
Time (100µs/div)
Time (100µs/div)
Output Ripple Waveform
V
IN
(AC Coupled)
(50mV/div)
V
OUT
(AC Coupled)
(50mV/div)
V
SINK
(AC Coupled)
(50mV/div)
(V
IN
= 3.6V; 2X Mode; 20.5mA Load)
Time (500ns/div)
8
www.analogictech.com
3195.2008.09.1.0