PRODUCT DATASHEET
AAT1270
SwitchReg
TM
Typical Characteristics
FLEN ON Delay Time vs. Input Voltage
200
180
160
1A Step-Up Current Regulator for Flash LEDs
Flash Inhibit On Delay Time
(EN/SET = 0V; FLEN = 3.3V; 500mA/ch)
FLINH
(2V/div)
T
FLEN_ON
(µs)
140
120
100
80
60
40
20
0
2.7
-40°C
0V
V
OUT
(2V/div)
V
SINK
(2V/div)
I
LED
(500mA/div)
Voltage (V)
4
2
1A
0
25°C
85°C
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Time (100µs/div)
Movie Mode Turn On
(13.7mA/ch)
Movie Mode Turn On
(68.5mA/ch)
EN/SET
(2V/div)
V
OUT
(2V/div)
V
SINK
(2V/div)
I
LED
(100mA/div)
0V
EN/SET
(2V/div)
V
OUT
(2V/div)
V
SINK
(2V/div)
I
LED
(100mA/div)
0V
0V
0V
0V
0V
0A
0A
Time (200µs/div)
Time (100µs/div)
Movie Mode to Flash Mode Turn On
(68.5mA/ch to 500mA/ch)
FLEN
(2V/div)
0V
4
2
0
1A
Flash Mode Turn On
(500mA/ch)
FLEN
(2V/div)
0V
0V
V
OUT
(2V/div)
V
SINK
(2V/div)
I
LED
(1A/div)
V
OUT
(2V/div)
V
SINK
(2V/div)
I
IN
(1A/div)
Voltage (V)
0V
0A
Time (100µs/div)
Time (100µs/div)
1270.2008.07.1.5
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