LM46000PWPR datasheet(41/56 Pages) TI2

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PGOOD (2 V/DIV)

VOUT (2 V/DIV)

IL (250 mA/DIV)

Time (2 ms/DIV)

PGOOD (2 V/DIV)

VOUT (2 V/DIV)

IL (100 mA/DIV)

Time (2 ms/DIV)

SW (10 V/DIV)

VOUT (5 mV/DIV)

IL (500 mA/DIV)

Time (500 µs/DIV)

PGOOD (2 V/DIV)

VOUT (2 V/DIV)

IL (500 mA/DIV)

Time (2 ms/DIV)

SW (10 V/DIV)

VOUT (5 mV/DIV)

IL (500 mA/DIV)

Time (2 µs/DIV)

SW (10 V/DIV)

VOUT (5 mV/DIV)

IL (500 mA/DIV)

Time (2 µs/DIV)

LM46000

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SNVSA45B – JUNE 2014 – REVISED MARCH 2018

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See 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

IOUT = 0.5A

Figure 89. Switching Waveform in CCM Operation

VOUT = 3.3 V

FS = 500 kHz

IOUT = 40 mA

Figure 90. Switching Waveform in DCM Operation

VOUT = 3.3 V

FS = 500 kHz

IOUT = 0 mA

Figure 91. Switching Waveform in PFM Operation

VIN = 24 V

VOUT = 3.3 V

RLOAD = 6.6 Ω

Figure 92. Start-up Into Full Load With Internal Soft-Start

Rate

VIN = 24 V

VOUT = 3.3 V

RLOAD = 13.2 Ω

Figure 93. Start-up Into Half Load With Internal Soft-Start

Rate

VIN = 24 V

VOUT = 3.3 V

RLOAD = 33 Ω

Figure 94. Start-up Into 100 mA With Internal Soft-Start

Rate

LM46000PWPR Datasheet(PDF) 41 Page - Texas Instruments

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