AAT1189 Datasheet, PDF (6/19 Pages) Advanced Analogic Technologies – High Voltage Step-Down Regulator

Typical Characteristics
Step-Down Converter Output Ripple
(V_IN = 12V; V_OUT = 3.3V; I_OUT = 1mA)
12V
0V
0.4
0.2
0.0
3.30
3.29
3.28
Time (2µs/div)
Step-Down Converter Output Ripple
(V_IN = 12V; V_OUT = 3.3V; I_OUT = 2.5A)
12V
0V
3.0
2.0
1.0
3.31
3.30
3.29
Time (1µs/div)
Step-Down Converter Load Transient Response
(I_OUT = 1.875A to 2.5A; V_IN = 12V; V_OUT = 3.3V; C_OUT = 2x22µF)
3.0
2.5
2.5A
1.875A
2.0
1.5
1.0
3.4
3.3
3.2
Time (100µs/div)
DATA SHEET
AAT1189
High Voltage Step-Down Regulator
Step-Down Converter Output Ripple
(V_IN = 12V; V_OUT = 5V; I_OUT = 1mA)
12V
0V
0.1
0.0
-0.1
5.00
4.99
Time (2µs/div)
Step-Down Converter Output Ripple
(V_IN = 12V; V_OUT = 5V; I_OUT = 2.5A)
12V
0V
4.0
3.0
2.0
5.02
5.00
4.98
Time (1µs/div)
Step-Down Converter Load Transient Response
(I_OUT = 1.875A to 2.5A; V_IN = 12V; V_OUT = 5V; C_OUT = 2x22µF)
3.0
2.5
2.5A
1.875A
2.0
1.5
1.0
5.1
5.0
4.9
Time (100µs/div)
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