MIC2128 datasheet(8/32 Pages) MICROCHIP

tên linh kiện	MIC2128

Giải thích chi tiết về linh kiện	75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start

PDF	32 Pages

Scroll/Zoom	100%

nhà sản xuất	MICROCHIP [Microchip Technology]

Trang chủ	http://www.microchip.com

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8 / 32 page

MIC2128

DS20005620A-page 8

 2016 Microchip Technology Inc.

Note:

Unless otherwise indicated, VVIN =12V, fSW =300 kHz, RILIM =1.5 k, L = 10 µH, VEXTVDD =VOUT, TA =+25°C

(refer to the Typical Application circuit).

FIGURE 2-13:

Switching Frequency vs.

Load Current.

FIGURE 2-14:

ILIM Source Current vs.

Temperature.

FIGURE 2-15:

Current Limit Comparator

Offset vs. Temperature.

FIGURE 2-16:

SS Source Current vs.

Temperature.

FIGURE 2-17:

Feedback Voltage vs.

Temperature.

FIGURE 2-18:

PG Threshold/VREF Ratio

vs. Temperature.

265

270

275

280

285

290

295

300

305

310

012345

Load Current (A)

VIN = 48V

OUT = 5V

SW_SETPOINT = 300 kHz

EXTVDD = VOUT

EN = VVIN

A = 25°C

A = -40°C

A = 85°C

100

110

120

130

140

-50

-25

100

125

Temperature (°C)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

-50

-25

100

125

Temperature (°C)

1.20

1.22

1.24

1.26

1.28

1.30

1.32

1.34

1.36

1.38

-50

-25

255075

100

125

Temperature (°C)

594

596

598

600

602

604

606

-50

-25

100

125

Temperature (°C)

-50

-25

255075

100

125

Temperature (°C)

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