PRODUCT DATASHEET
AAT1
184
SwitchReg
TM
Typical Characteristics
Step-Down Converter Load Transient Response
(I
OUT
= 0.6A to 1.2A; V
IN
= 12V; V
OUT
= 3.3V; C
OUT
= 2x22µF)
Output Voltage
(AC Coupled) (bottom) (V)
1.5
High Voltage Step-Down Regulator
Step-Down Converter Load Transient Response
(I
OUT
= 0.6A to 1.2A; V
IN
= 12V; V
OUT
= 5V; C
OUT
= 2x22µF)
Output Voltage
(AC Coupled) (bottom) (V)
1.5
Output Current (top) (A)
Output Current (top) (A)
1.2A
0.6A
1.0
0.5
0.0
1.2A
0.6A
1.0
0.5
0.0
3.5
3.4
3.3
3.2
3.1
5.1
5.0
4.9
Time (100µs/div)
Time (100µs/div)
Step-Down Converter Load Transient Response
(I
OUT
= 0.6A to 1.2A; V
IN
= 12V; V
OUT
= 3.3V; C
OUT
= 2x22µF)
Output Voltage
(AC Coupled) (bottom) (V)
1.5
Step-Down Converter Load Transient Response
(I
OUT
= 0.9A to 1.2A; V
IN
= 12V; V
OUT
= 5V; C
OUT
= 2x22µF)
Output Voltage
(AC Coupled) (bottom) (V)
1.5
Output Current (top) (A)
Output Current (top) (A)
1.2A
0.9A
1.0
0.5
0.0
1.2A
0.9A
1.0
0.5
0.0
-0.5
3.5
3.4
3.3
3.2
3.1
5.1
5.0
4.9
Time (100µs/div)
Time (100µs/div)
Step-Down Converter Line Transient Response
(V
IN
= 6V to 10V; V
OUT
= 3.3V; I
OUT
= 1.2A)
Output Voltage
(AC Coupled) (bottom) (V)
Input Voltage (top) (V)
15
10
5
0
3.35
3.30
3.25
Step-Down Converter Line Transient Response
(V
IN
= 6V to 10V; V
OUT
= 5V; I
OUT
= 1.2A)
Output Voltage
(AC Coupled) (bottom) (V)
Input Voltage (top) (V)
15
10
5
0
5.2
5.0
4.8
4.6
Time (100ms/div)
Time (100ms/div)
1184.2008.07.1.0
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