AAT1155 AAT, AAT1155 Datasheet - Page 7

• Manufacturer Part Number: AAT1155
• Description: Step-Down DC-DC Converter
• Manufacturer: AAT

Typical Characteristics
1155.2005.11.1.6
-10
-12
-2
-4
-6
-8
-10
-12
4
2
0
-2
-4
-6
-8
4
2
0
-0.02
-0.04
-0.06
-0.08
0
-0.10
-0.12
0.04
0.02
0.00
0
300µF 6.3VCeramic
TDK P/N C3325X5R0J107M
Vishay GRM43SR60J107ME20L
200µF 6.3V Ceramic
TDK P/N C3325X5R0J107M
Vishay GRM43SR60J107ME20L
0
(I
(I
(I
OUT
120µF 6.3V Tantalum
Vishay P/N 594D127X96R3C2T
OUT
OUT
Tantalum Output Ripple
1
1
= 3.0A; V
= 3.0A; V
= 3.0A; V
1
Output Ripple
Output Ripple
Time (µ µ s)
2
Time (µ µ s)
2
OUT
Time (µ µ s)
OUT
2
OUT
= 3.3V; V
= 3.3V; V
= 3.3V; V
3
3
3
IN
IN
IN
= 5.0V)
= 5.0V)
= 5.0V)
4
4
4
5
7
6
5
4
3
2
1
0
-1
5
5
7
6
5
4
3
2
1
0
-1
7
6
5
4
3
2
1
0
-1
1MHz 2.5A Step-Down DC/DC Converter
-12
-16
-12
-16
16
12
-4
-8
16
12
-4
-8
8
4
0
10000
8
4
0
10000
120µF 6.3V Tantalum
Vishay P/N 594D127X96R3C2T
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
100µF 6.3 Ceramic
TDK P/N C3225X5R0J107M
Vishay GRM43SR60J107ME20L
Loop Crossover Gain and Phase
Loop Crossover Gain and Phase
(I
Tantalum Transient Response
0
OUT
= 0 to 3.0A; V
Gain
100
120µF 6.3V Tantalum
Vishay P/N 594D127X96R3C2T
Frequency (Hz)
Frequency (Hz)
200
Time (µ µ s)
100000
300µF gain
OUT
= 3.3V; V
300
AAT1155
400
IN
L = 1.5µHy
Phase
= 5.0V)
200µF gain
500
100000
1000000
7
6
5
4
3
2
1
0
-1
180
135
90
45
0
-45
-90
-135
-180
180
135
90
45
0
-45
-90
-135
-180
7