AAT2689 Analogic Corporation, AAT2689 Datasheet - Page 5

• Manufacturer Part Number: AAT2689
• Manufacturer: Analogic Corporation

SystemPower
SystemPower
Typical Characteristics
2689.2008.06.1.0
2689.2008.06.1.0
100
-0.25
-0.50
-0.75
-1.00
1.00
0.75
0.50
0.25
0.00
90
80
70
60
50
40
30
20
10
Step-Down Converter Efficiency vs. Load
0
0.1
3.32
3.30
3.28
6
Step-Down Converter Line Regulation
Step-Down Converter Output Ripple
(V
8
IN1
1
TM
TM
= 12V; V
0V
10
(V
(V
OUT1
PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
OUT1
Output Current (mA)
12
Time (1µs/div)
12V
Input Voltage (V)
= 3.3V; L = 4.7µH)
OUT1
10
= 3.3V; L = 4.7µH)
14
= 3.3V; I
16
100
OUT1
18
= 2.5A)
I
I
I
I
OUT1
OUT1
OUT1
OUT1
1000
20
= 0.1mA
= 1mA
= 1250mA
= 2500mA
V
V
V
V
V
IN1
IN1
IN1
IN1
IN1
22
4.0
3.0
2.0
= 6V
= 8V
= 12V
= 18V
= 24V
10000
24
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
Step-Down Converter Load Transient Response
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
0.0
3.31
3.30
3.29
3.4
3.3
3.2
Step-Down Converter DC Regulation
0.1
Step-Down Converter Output Ripple
(V
1.875A
(I
IN1
OUT1
V
= 12V; V
OUT1
1
(V
= 1.875A to 2.5A; V
0V
PRODUCT DATASHEET
PRODUCT DATASHEET
OUT1
= 3.3V; C
Time (100µs/div)
Output Current (mA)
Time (2µs/div)
= 3.3V; L = 4.7µH)
OUT1
2.5A
10
12V
= 3.3V; I
OUT1
AAT2689
AAT2689
= 2x22µF)
100
OUT1
IN1
= 12V;
= 1mA)
1000
V
V
V
V
V
IN1
IN1
IN1
IN1
IN1
3.0
2.5
2.0
1.5
= 6V
= 8V
= 12V
= 18V
= 24V
0.4
0.2
0.0
10000
5
5