MAX17543 datasheet(9/19 Pages) MAXIM

9 / 19 page

(VIN = VEN/UVLO = 24V, VPGND = VSGND = 0V, CVIN = CVCC = 2.2µF, CBST = 0.1µF, CSS = 5600pF, RT = MODE = open, TA = TJ = -40°C

to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted.)

5V OUTPUT, OVERLOAD PROTECTION,

FIGURE 4a CIRCUIT

MAX17543 toc30

IOUT

1A/div

VOUT

500mV/div

20ms/div

5V OUTPUT, 2.5A LOAD CURRENT

BODE PLOT, FIGURE 4a CIRCUIT

FREQUENCY (Hz)

10k

-30

-20

-10

-40

-60

-40

-20

100

-80

4 6 8 1

100k

MAX17543 toc32

CROSSOVER

FREQUENCY = 58.2kHz

PHASE MARGIN = 63.4°

GAIN

PHASE

-50

-100

5V OUTPUT, APPLICATION OF

EXTERNAL CLOCK AT 700kHz,

FIGURE 4a CIRCUIT

MAX17543 toc31

VSYNC

2V/div

VLX

10V/div

2µs/div

MODE = SGND

3.3V OUTPUT, 2.5A LOAD CURRENT

BODE PLOT, FIGURE 4b CIRCUIT

FREQUENCY (Hz)

10k

-30

-20

-10

-40

-60

-40

-20

100

-80

4 6 8 1

100k

MAX17543 toc33

CROSSOVER

FREQUENCY = 62.5kHz

PHASE MARGIN = 61.2°

GAIN

PHASE

120

Maxim Integrated

www.maximintegrated.com

MAX17543

Synchronous Step-Down DC-DC Converter

with Internal Compensation

Typical Operating Characteristics (continued)

MAX17543 数据表(PDF) 9 Page - Maxim Integrated Products

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