AAT1189 Datasheet, PDF (8/19 Pages) Advanced Analogic Technologies – High Voltage Step-Down Regulator

SwitchReg^TM
Typical Characteristics
Step-Down Converter Soft Start
(V_IN = 12V; V_EN = 10V; V_OUT = 3.3V; I_OUT = 2.5A)
15
10
5
0
4.0
2.0
0.0
Time (500µs/div)
Step-Down Converter Switching Frequency
vs. Temperature
(V_OUT = 5V; L = 4.7µH)
500
490
480
470
460
450
440
-40
-20
0
20
40
60
Temperature (°C)
80
100
V_IH and V_IL vs. Input Voltage
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
5
V_IH
V_IL
10
15
20
25
Input Voltage (V)
PRODUCT DATASHEET
AAT1189
High Voltage Step-Down Regulator
Step-Down Converter Soft Start
(V_IN = 12V; V_EN = 10V; V_OUT = 5V; I_OUT = 2.5A)
15
10
5
0
4.0
2.0
0.0
Time (500µs/div)
Step-Down Converter Switching Frequency
vs. Input Voltage
(V_IN = 6V to 24V; V_OUT = 3.3V; I_OUT = 2.5A)
8
6
4
2
0
-2
-4
-6
-8
6
8
10 12 14 16
18 20 22 24
Input Voltage (V)
No Load Step-Down Converter
Input Current vs. Input Voltage
(V_EN = V_IN)
650
600
550
500
450
400
350
300
6
85°C
25°C
-40°C
9
12
15
18
21
24
Input Voltage (V)
8
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1189.2008.06.1.0