AAT2612 Datasheet, PDF (7/18 Pages) Skyworks Solutions Inc. – Step-Down DC/DC Converter With Three High PSRR LDOs

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Buck Load Transient
(V_IN = 3.6V, V_OUTB = 1.2V, C_INB = 10μF, C_OUTB = 10μF)
V_OUTB
1.2
200mV/div
I_OUTB
0.2A/div
400mA
0A
600mA
Time 40 μS/div
Output Ripple
(V_IN = 3.6V; V_OUT = 1.2V; I_OUT = 600mA; C_INB = 4.7μF)
V_OUT
20mv/div 1.2
V_LX
2V/div 0
Time 0.4 μS/div
LDO Quiescent Current vs Supply Voltage
(Single Channel)
34.00
32.00
30.00
28.00
26.00
85°C
25°C
-40°C
24.00
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
Buck Line Transient
(V_INB = 4V to 5V, I_OUTB = 600mA)
V_IN
1V/div
4
V_OUT
50mV/div
1.2
LDO Output Voltage vs Temperature
0.600
(V_IN = 3.6V)
0.400
LDO1
LDO2
LDO3
0.200
0.000
-0.200
-0.400
-0.600
-40
-15
10
35
60
85
Temperature (°C)
0.1
0.08
0.06
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.1
2.5
LDO Line Regulation
(V_OUTL = 1.8V)
IOUTB = 10mA
IOUTB = 100mA
IOUTB = 200mA
IOUTB =300mA
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202407B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013