AAT1282 Datasheet, PDF (7/22 Pages) Skyworks Solutions Inc. – 2A Driver for High Intensity LED Camera Flash

DATA SHEET
AAT1282
2A Driver for High Intensity LED Camera Flash
Typical Characteristics
Movie Mode Ripple
(V_OUT = 5.5V; V_IN = 3.6V; I_FLOUTX = 137mA/Ch; L = 1µH)
V_OUT
(AC Coupled)
(50mV/div)
V_IN
(AC Coupled)
(50mV/div)
I_SW
(500mA/div) ^200mA
I_FLOUTX
(AC Coupled)
(10mA/div)
Time (200ns/div)
Movie Mode Transition Characteristic
(I_FLOUTX = 137mA/Ch to 50mA/Ch; SuperCap [5.5V, 0.55F])
SDA Pin
(5V/div) 0V
V_OUT
(5V/div) _0V
V_FLOUTX
(AC Coupled)
(100mV/div)
I_FLOUTX
(100mA/div)
0A
Time (200µs/div)
Movie Mode Turn On Characteristic
(I_FLOUTX = 137mA/Ch; V_IN = 3.6V; SuperCap [5.5V, 0.55F])
SDA Pin
(5V/div) 0V
V_OUT
(5V/div) _0V
0A
I_SW
(1A/div)
I_FLOUTX
(100mA/div)
0A
Time (100µs/div)
Shutdown Current vs. Input Voltage
(V_EN = V_FLEN = GND = AGND = FLGND)
0.03
0.025
-40°C
25°C
0.02
0.015
0.01
0.005
0
2.7
3.1
3.5
3.9
4.3
4.7
Input Voltage (V)
5.1
5.5
Flash Timeout vs. Temperature
(V_IN = 3.6V; C_T = 47nF; I_FLOUTX = 1A/Ch)
1000
900
800
700
600
500
400
300
200
-40
-15
10
35
60
85
Temperature (°C)
Flash Timeout vs. C_T Capacitor
(I_FLOUTX = 1A/Ch; SuperCap [5.5V, 0.55F])
800
700
600
500
400
300
200
100
0
0 5 10 15 20 25 30 35 40 45 50
C_T Capacitor (nF)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202305C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013