600mA Step-Down Converter
Typical Characteristics
Efficiency vs. Input Voltage
(V
IN
= 3.6V; L = 2.2µH; V
OUT
= 1.8V)
100
95
90
1.84
AAT1106
Output Voltage vs. Output Current
(V
IN
= 3.6V; V
OUT
= 1.8V; L = 2.2µH)
1.82
I
LOAD
= 500mA
Output Voltage (V)
6
1.8
1.78
1.76
1.74
1.72
1.7
1.68
1.66
1.64
Efficiency (%)
85
80
75
70
65
60
55
50
2
3
4
5
I
LOAD
= 100mA
I
LOAD
= 10mA
0
200
400
600
800
1000
1200
Input Voltage (V)
Load Current (mA)
Frequency vs. Input Voltage
(V
OUT
= 1.8V; I
LOAD
= 150mA; L = 2.2µH)
1.560
1.550
0.400
R
DS(ON)
vs. Input Voltage
Frequency (MHz)
1.540
1.530
1.520
1.510
1.500
1.490
1.480
1.470
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
0.350
R
DS(ON)
(Ω)
Ω
0.300
P-Channel MOSFET
0.250
0.200
N-Channel MOSFET
0.150
2
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Input Voltage (V)
Feedback Voltage vs. Temperature
(V
IN
= 3.6V)
0.604
0.36
0.603
0.33
0.602
0.601
0.600
0.599
0.598
0.597
-40
-20
0
20
40
60
80
100
0.30
0.27
0.24
0.21
0.18
0.15
-45
-30
R
DS(ON)
vs. Temperature
(V
IN
= 3.6V)
Feedback Voltage (V)
P-Channel
R
DS(ON)
(Ω)
N-Channel
-15
0
15
30
45
60
75
90
Temperature (°C)
°
Temperature (
°
C)
6
1106.2007.07.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
