AAT2612 Datasheet, PDF (8/18 Pages) Skyworks Solutions Inc. – Step-Down DC/DC Converter With Three High PSRR LDOs

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Dropout Voltage vs Load Current
(V_OUT = 2.8V)
350
300
250
200
150
100
50
85°C
25°C
-40°C
0
20
60
100
140
180
220
260
300
Load Current (mA)
LDO Line Transient
(V_INB = 4V to 5V, I_OUTL = 300mA)
V_IN
1V/div
4
V_OUT
20mV/div
2.8
Time 20 μs/div
LDO Load Transient
(V_IN = 3.6V, V_OUTL = 1.8V, C_INL = 2.2μF, C_OUTL = 1μF)
V_OUTL
1.8
200mV/div
I_OUTL
0A
0.2A/div
300mA
Time 100 μS/div
LDO1 Power Supply Rejection Ratio, PSRR
(I_OUT1 = 10mA, BW = 100~100KHz)
100
90
80
70
60
50
40
30
20
10mA
10
0
100
1000
10000
100000
Frequency (Hz)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
8
202407B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013