AME5258 Datasheet, PDF (12/17 Pages) AMETHERM Circuit Protection Thermistors – 1.5MHz, 600mA Synchronous Buck Converter

AME
AME5258
Start-UP form Shutdown
VIN=3.6V
V_OUT=1.8V
I_LOAD=600mA
200µS/Div
Pluse Skipping Mode
RUN
2V /Div
VOUT
1V/Div
I_L
500mA/Div
SW
5V/Div
V_OUT
10mV/Div
IL
20mA /Div
1.5MHz, 600mA
Synchronous Buck Converter
Pluse Skipping Mode
SW
5V /Div
VOUT
10mV/Div
VIN=3 .6V
V_OUT=1.8V
I_OUT=50mA
1µS/Div
Pluse Skipping Mode
IL
20mA/Div
SW
5V/Div
V_OUT
10mV/Div
IL
20mA /Div
V_IN=3.6 V
V_OUT= 1. 8V
I_OUT=10 mA
1µS/Div
Load Step
VIN=3.6V
20µS/Div
V_OUT=1.8V
I_LOAD=0mA to 600mA
12
V_IN=3.6 V
VOUT= 1 .8V
IOUT=20mA
1µS/Div
100
95
V_OUT
100 m V/Div
90
AC COUPLED 85
Efficiency vs Input voltage
IOUT=100mA
I_OUT=200 mA
80
IL
75
500mA/Div
70
I_OUT =600m A
IOUT =10mA
65
I_OUT
60
500mA/Div
55
50
2. 5
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Rev.A.05