AME
1.5MHz, 600mA
Synchronous Buck Converter
AME5258
Start-UP form Shutdown
Pluse Skipping Mode
RUN
2V /Div
SW
5V /Div
VOUT
VOUT
1V/Div
10mV/Div
IL
IL
500mA/Div
20mA/Div
VIN=3.6V
VOUT=1.8V
ILOAD=600mA
200mS/Div
VIN=3.6V
VOUT=1.8V
IOUT=50mA
1mS/Div
Pluse Skipping Mode
Pluse Skipping Mode
SW
5V/Div
SW
5V/Div
VOUT
10mV/Div
VOUT
10mV/Div
IL
IL
20mA /Div
20mA /Div
VIN=3.6V
VOUT=1.8V
IOUT=20mA
1mS/Div
1mS/Div
VIN=3.6V
VOUT=1.8V
IOUT=10mA
Load Step
Efficiency vs Input voltage
100
95
90
85
80
75
70
65
60
55
50
IOUT=100mA
VOUT
100mV/Div
AC COUPLED
IOUT=200mA
IL
IOUT=600mA
500mA/Div
IOUT=10mA
IOUT
500mA/Div
20mS/Div
2.5
3
3.5
4
4.5
5
5.5
VIN=3.6V
VOUT=1.8V
Input Voltage(V)
ILOAD=0mA to 600mA
12
Rev.A.05
AMETHERM [ AMETHERM CIRCUIT PROTECTION THERMISTORS ]
