AAT1239-1_0810 Datasheet, PDF (7/23 Pages) Advanced Analogic Technologies – 40V Step-Up Converter for 4 to 10 White LEDs

SwitchReg^TM
Typical Characteristics
Transition of LED Current
(10 White LEDs; SEL = Low; I_LED = 3mA to 13mA)
34
32
30
28
0.4
0.3
0.2
0.1
0.0
Time (50µs/div)
PRODUCT DATASHEET
AAT1239-1
40V Step-Up Converter for 4 to 10 White LEDs
Transition of LED Current
(10 White LEDs; SEL = Low; I_LED = 13mA to 6mA)
34
32
30
0.4
0.3
0.2
0.1
0.0
Time (50µs/div)
Input Disconnect Switch Resistance
vs. Input Voltage
300
280
260
120°C
240
100°C
220
200
180 _25°C
85°C
160
140
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Low Side Switch On Resistance
vs. Input Voltage
260
240
220
120°C
200
100°C
180
160
140
85°C
120
100 _25°C
80
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
EN/SET Latch Timeout vs. Input Voltage
350
300
250
-40°C
200
85°C
25°C
150
100
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
EN/SET Off Timeout vs. Input Voltage
300
-40°C
250
200
25°C
85°C
150
100
50
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
1239-1.2008.10.1.2
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