LM76005 datasheet(29/51 Pages) TI2

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8.2.3 Application Curves

Unless otherwise specified the following conditions apply:

Load Current (A)

0.001

0.01 0.02

0.05 0.1 0.2

0.5

2 3 4 5

100

Quik

VIN = 12 V

VIN = 24 V

VOUT = 5 V

fSW = 400 kHz

Auto Mode

Figure 8-4. LM76005 Efficiency

Load Current (A)

0.5

1.5

2.5

3.5

4.5

4.8

4.84

4.88

4.92

4.96

5.04

5.08

5.12

5.16

5.2

Quik

VIN = 12 V

VIN = 24 V

VOUT = 5 V

fSW = 400 kHz

Auto Mode

Figure 8-5. LM76005 Load and Line Regulation

Input Voltage (V)

4.5

5.5

6.5

3.8

4.2

4.4

4.6

4.8

5.2

5.4

5.6

drop

ILOAD = 2.5 A

ILOAD = 5 A

VOUT = 5 V

fSW = 400 kHz

FPWM Mode

Figure 8-6. LM76005 Voltage Dropout

Input Voltage (V)

5.5

6.5

5E+4

1E+5

1.5E+5

2E+5

2.5E+5

3E+5

3.5E+5

4E+5

4.5E+5

5E+5

drop

ILOAD = 2.5 A

ILOAD = 5 A

VOUT = 5 V

fSW = 400 kHz

FPWM Mode

Figure 8-7. LM76005 Frequency Dropout

VOUT

VSW

(500 mA/

DIV)

Time (4 ms/DIV)

IINDUCTOR

(20 mV/DIV)

(5 V/DIV)

VIN = 12 V

VOUT = 5 V

fSW = 400 kHz

No Load

Auto Mode

Figure 8-8. LM76005 Switching Waveform and

Output Ripple

VOUT

VSW

(500 mA/

DIV)

Time (4 ms/DIV)

IINDUCTOR

(20 mV/DIV)

(10 V/DIV)

VIN = 24 V

VOUT = 5 V

fSW = 400 kHz

No Load

Auto Mode

Figure 8-9. LM76005 Switching Waveform and

Output Ripple

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LM76005

SNVSBK5A – FEBRUARY 2020 – REVISED JULY 2020

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