AME5249 Datasheet, PDF (16/21 Pages) Analog Microelectronics – 1.5MHz, 600mA Synchronous Buck Converter

AME
AME5249
Stead State Test
V_IN
200mV/Div
AC COUPLED
VOUT
20mV/Div
I_L
100mA/Div
VS W
2V /Div
AC COUPLED
VIN=3.6V
VOUT=1.8V
I_OUT=300mA
1µS/Div
R_DS(ON) vs Input Voltage
0.7
0.6
0.5
High-Side Switch
0.4
0.3
Low-Side Switch
0.2
0.1
2.5
3.5
4.5
5.5
Input Voltage(V)
Start Up From Shutdown
Run
2V/Div
VOUT
1V/ Div
IL
500mA/Div
VIN=3.6V
100µS/Div
VOUT=1.8V
16
IOUT=550mA
1.5MHz, 600mA
Synchronous Buck Converter
R_DS(ON) vs Temperature
0 .7
V_{I N}=3 .6V
0 .6
High-Side Switch
0 .5
0 .4
0 .3
Low-Side Switch
0 .2
0 .1
-40
-15
+10
+35
+60
+85 +110
Temperature(^o C)
Output Voltage vs Output Current
1. 87
1. 86
1. 85
1. 84
1. 83
1. 82
1. 81
1.80
1. 79
1. 78
1. 77
0
100
200
300
400
500
600
Output Current(mA)
Current Limit vs V_IN
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
VOUT=1.2V
0.7
2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5
VIN(V)
Rev.A.01