850kHz 1A Synchronous Buck DC/DC Converter
Typical Characteristics
High Side R
DS(ON)
vs. Temperature
170
150
170
AAT1152
Low Side R
DS(ON)
vs. Temperature
3.6V
2.7V
R
DS(ON)
(mΩ)
150
130
110
90
70
-20
R
DS(ON)
(mΩ)
130
110
90
70
-20
3.6V
2.7V
5.5V
4.2V
0
20
40
60
80
100
120
4.2V
5.5V
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
R
DS(ON)
vs. Input Voltage
130
1.2
120
Enable Threshold vs. Input Voltage
Enable Threshold (V)
High Side
R
DS(ON)
(mΩ)
110
100
1.1
V
EN
(H)
1
0.9
0.8
90
80
2.5
3
3.5
4
Low Side
V
EN
(L)
4.5
5
5.5
0.7
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
Oscillator Frequency Variation vs.
Supply Voltage
3.5
2.5
Oscillator Frequency Variation vs. Temperature
V
IN
=3.6V
10
6
Variation (%)
1.5
0.5
-0.5
-1.5
2.5
3
3.5
4
4.5
5
5.5
Variation (%)
2
-2
-6
-10
-20
0
20
40
60
80
100
Supply Voltage (V)
Temperature (°C)
1152.2003.01.0.9
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
