Datasheet

VOUT =1.8V
IOUT =20mA
VOUT 20mV/Div
EnteringPFMMode
Voltagepositioningactive
ForcedPWM
Mode
MODE/DATA 1V/Div
EnablePowerSaveMode
Timebase-20 s/Divm
IOUT=60mA
IOUT1=540mA
VOUT =1.575V
50mV/Div
Voltagepositioning inPFM
Modereduces voltage drop
duringloadstep
IOUT 200mA/Div
MODE/DATA =low
PWMModeoperation
Timebase-100 s/Divm
IOUT=60mA
IOUT1=540mA
VOUT =1.575V
50mV/Div
IOUT 200mA/Div
MODE/DATA =high
PWMModeoperation
Timebase-100 s/Divm
VIN1V/Div
VOUT 1.575
IOUT 200mA
VIN3.6Vto4.6V
VOUT 50mV/Div
MODE/DATA =high
Timebase-400 s/Divm
TPS62420, TPS62421
SLVS676C –JUNE 2006–REVISED JUNE 2010 www.ti.com
FORCED PWM/PFM MODE TRANSITION LOAD TRANSIENT RESPONSE PFM/PWM
Figure 17. Figure 18.
LOAD TRANSIENT RESPONSE PWM OPERATION LINE TRANSIENT RESPONSE
Figure 19. Figure 20.
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