AAT3192/93
Low-Cost, 2-/3-Channel
Charge-Pump LED Drivers
Typical Characteristics
Turn On to 1X Mode
(V
IN
= 4.2V; 20mA/ch)
32
Maximum LED Current vs R
SET
EN/SET
(2V/div)
I
LED
(mA)
28
24
20
16
12
8
4
0
8
13
18
23
28
33
V
F
(2V/div)
V
SINK
(2V/div)
I
IN
(200mA/div)
Time (200µs/div)
R
SET
(kΩ)
Ω
EN Input High Threshold Voltage
vs. Input Voltage
1.2
1.0
1.2
1.0
EN Input Low Threshold Voltage
vs. Input Voltage
V
ENH
(V)
0.8
0.6
0.4
0.2
2.7
25°C
85°C
-40°C
V
ENL
(V)
0.8
0.6
0.4
0.2
-40°C
85°C
2.7
3.1
3.5
3.9
4.3
25°C
3.1
3.5
3.9
4.3
4.7
5.1
5.5
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
EN/SET Input Latch Timeout vs. Input Voltage
350
300
EN/SET Input OFF Timeout vs. Input Voltage
350
85°C
T
EN/SET(OFF)
(µs)
85°C
300
250
200
150
100
2.7
T
EN/SET(LAT)
(µs)
250
200
150
100
2.7
25°C
-40°C
25°C
-40°C
3.1
3.5
3.9
4.3
4.7
5.1
5.5
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
3193.2007.05.1.0
7
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
