AAT2782_12 Datasheet, PDF (8/22 Pages) Skyworks Solutions Inc. – Triple-Output PMIC Dual Buck with Low-VIN LDO

DATA SHEET
AAT2782
Triple-Output PMIC: Dual Buck with Low-V_IN LDO
Typical Characteristics—Buck Converter 1
Step-Down Converter 1 Output Ripple
(V_IN = 3.3V; V_OUT1 = 1.2V; I_OUT1 = 1.2A)
Step-Down Converter 1 Output Ripple
(V_IN = 3.3V; V_OUT1 = 1.2V; I_OUT1 = 1mA)
1.22
1.22
1.20
1.20
1.18
1.18
1.4
1.2
1.0
0.2
0.8
0.0
Time (500ns/div)
Time (10µs/div)
Step-Down Converter 1 Line Transient Response
(V_IN = 3V to 4V; V_OUT1 = 1.2V; I_OUT1 = 1.2A; C_OUT = 10µF)
5
4
3
2
1.4
1.3
1.2
1.1
1.0
Time (100µs/div)
Step-Down Converter 1 Load Transient Response
(I_OUT1 = 0.9A to 1.2A; V_IN = 3.3V; V_OUT1 = 1.2V;
C_OUT1 = 10µF; C_FF = 100pF)
1.2A
0.9A
1.5
1.2A
1.0
0.9A
0.5
1.25
1.20
1.15
Time (100µs/div)
Step-Down Converter 1 Soft Start
(V_IN = 3.3V; V_OUT1 = 1.2V; I_OUT1 = 1.2A; C_FF = 100pF)
4
3
2
1
0
1.0
0.5
0.0
Time (50µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
8
202038A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012