1MHz Step-Down Converter
Typical Characteristics
Frequency vs. Input Voltage
(V
OUT
= 1.8V)
1.0
2.0
1.5
AAT1123
Output Voltage Error vs. Temperature
(V
IN
= 3.6V; V
O
= 2.5V)
Frequency Variation (%)
Output Error (%)
0.5
0.0
-0.5
-1.0
-1.5
-2.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-40
-20
0
20
40
60
80
100
Input Voltage (V)
°
Temperature (°C)
Switching Frequency vs. Temperature
(V
IN
= 3.6V; V
O
= 1.5V)
0.20
35
Quiescent Current vs. Input Voltage
(V
O
= 1.8V)
85°C
30
Variation (%)
0.10
Supply Current (μA)
μ
25°C
25
0.00
-0.10
20
-40°C
-0.20
-40
15
-20
0
20
40
60
80
100
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
°
Temperature (°C)
Input Voltage (V)
P-Channel R
DS(ON)
vs. Input Voltage
750
700
650
120°C
100°C
750
700
650
N-Channel R
DS(ON)
vs. Input Voltage
120°C
R
DS(ON)
(mΩ)
Ω
R
DS(ON)
(mΩ)
Ω
100°C
600
550
500
450
400
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
25°C
85°C
600
550
500
450
400
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
25°C
85°C
Input Voltage (V)
Input Voltage (V)
6
1123.2007.02.1.6
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
