AME
AME5258
Oscillator Frequency VS Temperature
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
-50
1.5MHz, 600mA
Synchronous Buck Converter
Oscillator Frequency VS Supply Voltage
2.0
1.9
1.8
Frequency(MHz)
-25
0
+25
+50
o
Frequency(MHz)
1.7
1.6
1.5
1.4
1.3
1.2
+75
+100
+125
1.1
2.5
3.5
4.5
5.5
Temperature( C)
Supply
Voltage (V)
V
FB
vs Temperature
0.615
0.612
R
DS(ON)
vs Input voltage
0.7
0.6
0.609
Main Switch
V
FB
(V)
0.603
0.600
0.597
0.594
0.591
0.588
0.585
-50
-25
0
+25
+50
o
R
DS(ON)
(mΩ)
0.606
0.5
0.4
0.3
0.2
Synchronous
Switch
0.1
0
2.5
+75
+100
+125
3.5
4.5
5.5
6.5
Temperature( C)
Input Voltage(V)
R
DS(ON)
vs Temperature
0.80
0.75
0.70
0.65
V
IN
=3.6V
V
IN
=4.2V
V
IN
=2.7V
Efficiency vs Load Current
100
90
80
V
IN
=2.7V
R
DS(ON)
(mΩ)
Efficiency(%)
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
-50
-25
0
+25
+50
+75
+100
+125
70
60
50
40
V
IN
=3.3V
V
IN
=4.2V
Main Switch
Synchronous Switch
30
20
1
V
OUT
=1.2V
10
100
1000
Temperature(
o
C)
I
OUT
(mA)
13
Rev.A.05
AMETHERM [ AMETHERM CIRCUIT PROTECTION THERMISTORS ]
