AAT2687 Datasheet, PDF (6/20 Pages) Advanced Analogic Technologies – PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters

DATA SHEET
AAT2687
PMIC Solution for 24V Systems
with 2 High Performance Step-Down Converters
Typical Characteristics—Channel 1
Step-Down Converter Load Transient
(V_OUT1 = 3.3V; V_IN1 = 12V; C_OUT1 = 66µF; L = 4.7µH)
4.05
16
3.80
14
3.55
12
3.30
10
3.05
8
2.80
6
4.5A
2.55
4
2.30
2
2.05
450mA
0
Step-Down Converter Load Transient
(V_OUT1 = 3.3V; V_IN1 = 12V; C_OUT1 = 66µF; L = 4.7µH)
3.7
16
3.5
14
3.3
12
3.1
10
2.9
8
2.7
6
2.5
4.5A
4
2.3
2.25A
2
2.1
0
Time (100µs/div)
Time (100µs/div)
Step-Down Converter Load Transient
(V_OUT1 = 3.3V; V_IN1 = 12V; C_OUT1 = 66µF; L = 4.7µH)
3.5
10
3.4
9
3.3
8
3.2
7
3.1
6
3
5
4.5A
2.9
4
2.8
3.375A
3
2.7
2
Time (100µs/div)
Step-Down Converter Line Transient
(V_OUT1 = 3.3V; C_OUT1 = 66µF; L = 4.7µH)
3.36
22
3.34
20
3.32
18
3.3
16
3.28
14
3.26
12
3.24
10
3.22
8
3.2
6
Time (100µs/div)
Step-Down Converter Output Voltage Ripple
(V_OUT1 = 3.3V; V_IN1 = 12V; C_OUT1 = 66µF; L = 4.7µH; I_OUT1 = 4.5A)
3.34
35
3.32
30
3.3
25
3.28
20
3.26
15
3.24
10
3.22
5
3.2
0
3.18
-5
Time (1µs/div)
Step-Down Converter Output Voltage Ripple
(V_OUT1 = 3.3V; V_IN1 = 12V; C_OUT1 = 66µF; L = 4.7µH; I_OUT1 = 1mA)
3.36
35
3.34
30
3.32
25
3.3
20
3.28
15
3.26
10
3.24
5
3.22
0
3.2
-5
Time (2µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
6
202033A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012