ADUM3471ARSZ datasheet(22/32 Pages) AD

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ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474

Rev. 0 | Page 22 of 32

030

TIME (ms)

VISO AT 10mA

VISO AT 50mA

VISO AT 400mA

Figure 27. Typical VISO Startup 5 V In to 3.3 V Out with 10 mA, 50 mA, and

400 mA Output Load

TIME (ms)

VISO AT 10mA

VISO AT 50mA

VISO AT 250mA

Figure 28. Typical VISO Startup 3.3 V In to 3.3 V Out with 10 mA, 50 mA, and

250 mA Output Load

030

TIME (ms)

VISO AT 10mA

VISO AT 20mA

VISO AT 100mA

Figure 29. Typical VISO Startup 5 V In to 15 V Out with 10 mA, 20 mA, and

100 mA Output Load

6.0

5.5

5.0

4.5

1.0

0.5

6.0

5.5

5.0

–2

TIME (ms)

90% LOAD

10% LOAD

COUT = 47µF, L1 = 100µH

COUT = 47µF, L1 = 47µH

Figure 30. Typical VISO Load Transient Response 5 V In to 5 V Out at 10% to

90% of 400 mA Load at 500 kHz fSW

4.0

3.5

3.0

1.0

0.5

4.0

3.5

3.0

–2

TIME (ms)

COUT = 47µF, L1 = 47µH

90% LOAD

10% LOAD

COUT = 47µF, L1 = 100µH

Figure 31. Typical VISO Load Transient Load Response 5 V In to 3.3 V Out at

10% to 90% Load of 400 mA Load at 500 kHz fSW

4.0

3.5

3.0

1.0

0.5

4.0

3.5

3.0

–2

TIME (ms)

COUT = 47µF, L1 = 47µH

90% LOAD

10% LOAD

COUT = 47µF, L1 = 100µH

Figure 32. Typical VISO Load Transient Response 3.3 V In to 3.3 V Out at 10%

to 90% of 250 mA Load at 500 kHz fSW

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