LM76005 datasheet(32/51 Pages) TI2

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VOUT

PGOOD

(2 A/DIV)

Time (4 ms/DIV)

IINDUCTOR

(2 V/DIV)

Enable

(2 V/DIV)

VIN = 12 V

VOUT = 5 V

fSW = 400 kHz

No Load

Auto Mode

Figure 8-22. LM76005 Start-up With Pre-Biased

Output

VOUT

PGOOD

(2 A/DIV)

Time (4 ms/DIV)

IINDUCTOR

(2 V/DIV)

Enable

(2 V/DIV)

VIN = 24V

VOUT = 5 V

fSW = 400 kHz

No Load

Auto Mode

Figure 8-23. LM76005 Start-up With Pre-Biased

Output

VOUT

VSW

(2 A/DIV)

Time (40 ms/DIV)

IINDUCTOR

(1 V/DIV)

(5 V/DIV)

VIN = 12 V

VOUT = 5 V

fSW = 400 kHz

Auto Mode

Figure 8-24. LM76005 Short-Circuit Behavior With

Hiccup

VOUT

VSW

(2 A/DIV)

Time (40 ms/DIV)

IINDUCTOR

(1 V/DIV)

(10 V/DIV)

VIN = 24 V

VOUT = 5 V

fSW = 400 kHz

Auto Mode

Figure 8-25. LM76005 Short-Circuit Behavior With

Hiccup

Peak Value

Average Value

LW_PK5

CB_PK5

LW_AV5

MW_PK5

MW_AV5

SW PK5

SW AV5

CB_AV5

Peak Limit

Average Limit

VIN = 13.5 V

VOUT = 5 V

fSW = 400 kHz

CFLT = 4 × 2.2 µF, LFLT = 1 µH

IOUT = 3.5 A

Figure 8-26. LM76005 Conducted EMI Result vs.

CISPR25 Limits - Low Frequency

VHF1-PK5

VHF2-PK5

TVI-PK5

FM-PK5

VHF1-AV5

VHF2-AV5

TVI-AV5

FM-AV5

Peak Value

Average Value

Peak Limit

Average Limit

VIN = 13.5 V

VOUT = 5 V

fSW = 400 kHz

CFLT = 4 × 2.2 µF, LFLT = 1 µH

IOUT = 3.5 A

Figure 8-27. LM76005 Conducted EMI Result vs.

CISPR25 Limits - High Frequency

LM76005

SNVSBK5A – FEBRUARY 2020 – REVISED JULY 2020

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