LM46002PWPR datasheet(32/52 Pages) TI

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VOUT (200 mV/DIV)

VDROP-ON-0.75-LOAD (1 A/DIV)

IINDUCTOR (1 A/DIV)

Time (100 µs/DIV)

0.0

0.5

1.0

1.5

2.0

2.5

100

110

120

Ta (

SC)

R,JA=10

SC/W

R,JA=20

SC/W

R,JA=30

SC/W

C013

3.27

3.28

3.29

3.30

3.31

3.32

3.33

3.34

3.35

0.001

0.01

0.1

Current (A)

VIN = 12V

VIN = 18V

VIN = 24V

VIN = 28V

VIN = 36V

C001

2.3

2.5

2.7

2.9

3.1

3.3

3.5

4.0

4.5

5.0

VIN (V)

IOUT = 0.1A

IOUT = 0.5A

IOUT = 1A

IOUT = 1.5A

IOUT = 2A

C013

100

0.001

0.01

0.1

Load Current (A)

VIN = 12V

VIN = 18V

VIN = 24V

VIN = 28V

C001

CBOOT

VCC

BIAS

LM46002

VOUT

RFBT

RFBB

CBIAS

2.2 µF

1 µF

0.47 µF

L=10 µH

150 µF

47 pF

1 M

432

CFF

COUT

CBOOT

CVCC

VOUT = 3.3 V FS = 500 kHz

LM46002

SNVSA13B – APRIL 2014 – REVISED SEPTEMBER 2014

www.ti.com

9.2.3 Application Performance Curves

Please refer to Table 2 for Bill of materials for each VOUT and FS combination. Unless otherwise stated, application

performance curves were taken at TA = 25 °C.

VOUT = 3.3 V

FS = 500 kHz

VIN = 24 V

VOUT = 3.3 V

FS = 500 kHz

Figure 47. BOM for VOUT = 3.3 V FS = 500 kHz

Figure 48. Efficiency

VOUT = 3.3 V

FS = 500 kHz

VOUT = 3.3 V

FS = 500 kHz

Figure 49. Output Voltage Regulation

Figure 50. Drop-Out Curve

VOUT = 3.3 V

FS = 500 kHz

VIN = 24 V

VOUT = 3.3 V

FS = 500 kHz

VIN = 24 V

Figure 51. Load Transient Between 0.1 A and 2 A

Figure 52. Derating Curve

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