CM3706
1.5MHz, 600mA Synchronous
Step-Down Regulator
Output Voltage vs Temperature
1.23
VOLTAGE (V)
OUTPUT
1.22
1.21
Vin=5V
Vout=1.2V
1.2
ILoad=600mA
1.19
1.18
1.17
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (℃)
Pulse Skipping Mode Operation
Discontinuous Operation
Start-Up from shutdown
SW
1V/DIV
I
Load
20mA/DIV
Vin=3.6V
Vout=1.8V
Iload=10.29mA
1us
SW
1V/DIV
I
Loa d
20mA/DIV
Vin=3.6V
Vout=1.8V
Iloa d=22.24mA
0.2 u s
Vo ut
0.5V/DIV
I
Loa d
20 0mA/DIV
Vin=3.6 V
Vou t=1 .2 V
Iloa d =6 00 mA
0.5ms
Load step
Load step
Load step
Vout
20mV/DIV
Vout
20mV/DIV
Vout
20mV/DIV
I
Load
0.2A/DIV
200us
Vin=5V
Vout=2.5V
I
LOAD
=0mA TO 600mA
I
Load
0.2A/DIV
200us
Vin=5V
Vout=2.5V
I
LOAD
=50mA TO 600mA
I
Load
0.2A/DIV
500us
Vin=5V
Vout=2.5V
I
LOAD
=100mA TO 600mA
2006/12/20
Rev. 1.6
Champion Microelectronic Corporation
Page 7
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
