Datasheet

TimeBase-10 s/Divm
V 3.6V
V 1.8V,I 150mA
L 2.2 H,C 10 F0603
IN
OUT OUT
OUT
m m
V 10mV/Div
OUT
SW2V/Div
I
COIL
200mA/Div
TimeBase-1 s/Divm
MODE
2V/Div
SW
2V/Div
I
200mA/Div
coil
V =3.6V
V =1.8V
I =10mA
IN
OUT
OUT
PFMMode
ForcedPWMMode
EN2V/Div
SW2V/Div
V 2V/Div
OUT
I 100mA/Div
IN
V =3.6V
R =10
V =1.8V
I intoC
MODE=GND
IN
Load
OUT
IN IN
Ω
TimeBase-100 s/Divm
TimeBase-2.5 s/Divm
MODE
2V/Div
SW
2V/Div
I
COIL
200mA/Div
V =3.6V
V =1.8V
I =10mA
IN
OUT
OUT
PFMMode
ForcedPWMMode
TPS62250
SLVS842 – SEPTEMBER 2008 .......................................................................................................................................................................................... www.ti.com
MODE PIN TRANSITION FROM PFM
TYPICAL OPERATION (PWM Mode) TO FORCED PWM MODE AT LIGHT LOAD
Figure 13. Figure 14.
MODE PIN TRANSITION FROM PWM
TO PFM MODE AT LIGHT LOAD START-UP TIMING
Figure 15. Figure 16.
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