AAT1149 Analogic Corporation, AAT1149 Datasheet - Page 8

• Manufacturer Part Number: AAT1149
• Manufacturer: Analogic Corporation

Typical Characteristics
8
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
-1.00
-2.00
-3.00
-4.00
4.00
3.00
2.00
1.00
0.00
(V
(V
(V
OUT
OUT
OUT
= 1.8V; No Feedforward Capacitor)
= 1.8V; No Feedforward Capacitor)
= 1.8V; No Feedforward Capacitor)
Load Transient
Load Transient
Time (50µs/div)
Time (50µs/div)
Time (50µs/div)
Soft Start
400mA
400mA
10mA
1mA
2.00
1.75
1.50
1.25
1.00
0.75
0.25
0.00
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.00
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
2.00
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
-0.50
-1.00
-1.50
2.50
2.00
1.50
1.00
0.50
0.00
400mA Step-Down Converter
(V
(V
(V
OUT
OUT
OUT
Load Transient
Load Transient
= 1.8V; C
= 1.8V; C
= 1.8V; C
Time (50µs/div)
Time (50µs/div)
Time (50µs/div)
3MHz Fast Transient
Soft Start
FF
FF
FF
400mA
400mA
= 100pF)
= 100pF)
= 100pF)
10mA
1mA
1149.2006.11.1.0
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00