AAT2612 Datasheet, PDF (6/18 Pages) Skyworks Solutions Inc. – Step-Down DC/DC Converter With Three High PSRR LDOs

SwitchReg^TM
PRODUCDTADTAATASSHHEEEETT
AAAATT22661122
SStteepp--DDoowwnn DDCC//DDCC CCoonnvveerrtteerrWWiitthhTThhrreeee HHiigghh PPSSRRRR LLDDOOss
Buck Output Voltage vs Temperature
1.000
(V_INB= 3.6V; V_OUTB = 1.2V; L = 2.2μH)
0.600
0.200
-0.200
-0.600
-1.000
-40
-15
10
35
60
85
Temperature (°C)
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
10
Buck Load Regulation
(V_OUT = 1.2V; L = 2.2μH)
VIN = 2.5V
VIN = 3.6V
VIN = 4.2V
VIN = 5.0V
VIN = 5.5V
70 130 190 250 310 370 430 490 550 610
Output Current (mA)
1.20
1.10
1.00
0.90
0.80
0.70
0.60
2.5
EN V_IL vs Supply Voltage
-40°C
25°C
85°C
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
Buck Line Regulation
(V_OUT = 1.2V; L = 2.2μH)
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
I_OUT = 10mA
I_OUT = 100mA
-0.8
I_OUT = 300mA
I_OUT = 600mA
-1
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
1.20
1.10
1.00
0.90
0.80
0.70
2.5
EN V_IH vs Supply Voltage
-40°C
25°C
85°C
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
Softstart
(V_IN = 3.6V; V_OUTB = 1.2V; I_OUTB = 600mA)
V_IN
2V/div ₀
V_OUT
1V/div ₀
I_IN
0.2A/div 0
Time 40 μS/div
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
6
202407B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013