ADP1621ARMZ-R7 datasheet(11/32 Pages) AD

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ADP1621

Rev. A | Page 11 of 32

CH1 5V

CH2 5V

CH4 500mAΩ

M2µs

A CH1

2.9V

TA = 25°C

VIN = 3.3V

VOUT = 5V

LOAD = 0.3A

CCM OPERATION

CH1 = GATE

CH4 = INDUCTOR CURRENT

CH2 = DRAIN VOLTAGE

CH1 50mV

CH4 1AΩ

M200µs

A CH4

700V

TA = 25°C

VIN = 3.3V

VOUT = 5V

LOAD CURRENT

FROM 0.2A TO 1.2A

OUTPUT, AC-COUPLED

Figure 23. CCM Switching Waveform

Figure 26. Load Transient Response of the Circuit Shown in Figure 1

CH1 1V

CH3 5V

CH2 5V

M2ms

A CH1

4.5V

TA = 25°C

VIN = 3.3V

VOUT = 5V

fSW = 220kHz

SOFT-START = 9.3ms

CH3 = GATE

CH1 = VOUT

CH2 = SDSN

CH1 50mV

CH2 2V

M400µs

A CH2

3.8V

TA = 25°C

VOUT = 5V

NO LOAD AT VOUT

CH1 = VOUT, AC-COUPLED

CH2 = VIN FROM 3V TO 4V

Figure 24. Soft Start Waveform

Figure 27. Line Transient Response of the Configuration Shown in Figure 1

with No Load

CH1 50mV

CH2 2V

M400µs

A CH2

3.8V

TA = 25°C

VOUT = 5V

LOAD AT VOUT = 1A

CH1 = VOUT, AC-COUPLED

CH2 = VIN FROM 3V TO 4V

Figure 25. Line Transient Response of the Configuration Shown in Figure 1

with a 1 A Load

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