PRODUCT DATASHEET
AAT3195
ChargePump
TM
4-Channel Charge-Pump LED Driver
Typical Characteristics
EN/SET Input OFF Timeout
vs. Input Voltage
450
400
300
350
EN/SET Input Latch Timeout
vs. Input Voltage
T
EN/SET(OFF)
(µs)
350
300
250
200
150
100
2.7
T
EN/SET(LAT)
(µs)
250
200
150
100
2.7
85°C
25°C
-40°C
3.1
3.5
3.9
4.3
4.7
5.1
5.5
85°C
25°C
-40°C
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
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)
AAT3195-1 Output Ripple Waveform
(V
IN
= 3.6V; 2X Mode; 30mA Load)
V
IN
(AC Coupled)
(100mV/div)
V
OUT
(AC Coupled)
(100mV/div)
V
SINK
(AC Coupled)
(100mV/div)
Time (500ns/div)
V
IN
(AC Coupled)
(50mV/div)
V
OUT
(AC Coupled)
(50mV/div)
V
SINK
(AC Coupled)
(50mV/div)
AAT3195-2 Output Ripple Waveform
(V
IN
= 3.6V; 2X Mode; 20.5mA Load)
Time (500ns/div)
8
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3195.2009.06.1.3
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