Si4842DY datasheet(10/40 Pages) AD

No de pièce	Si4842DY

Description	Synchronous Buck Controller

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ADP1878/ADP1879

Data heet

Rev. A | Page 10 of 40

Figure 22. Feedback Voltage vs. Temperature

Figure 23. Switching Frequency vs. High Input Voltage, 300 kHz, ±10% of 12 V

Figure 24. Switching Frequency vs. High Input Voltage, 600 kHz, VOUT = 1.8 V,

VIN Range = 13 V to 16.5 V

Figure 25. Switching Frequency vs. High Input Voltage, 1.0 MHz,

VIN Range = 13 V to 16.5 V

Figure 26. Frequency vs. Load Current, 300 kHz, VOUT = 0.8 V

Figure 27. Frequency vs. Load Current, 300 kHz, VOUT = 1.8 V

601.0

600.5

600.0

599.5

599.0

598.5

598.0

597.5

597.0

–40.0

–7.5

25.0

57.5

90.0

122.5

TEMPERATURE (°C)

VREG = 5V, VIN = 13V

VREG = 5V, VIN = 20V

325

315

305

295

285

275

265

255

10.8 11.0 11.2 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.0 13.2

VIN (V)

+125°C

+25°C

–40°C

NO LOAD

650

600

550

500

450

400

13.0

13.4

13.8

14.2

14.6

15.0

15.4

15.8

16.2

VIN (V)

+125°C

+25°C

–40°C

NO LOAD

900

880

860

840

820

800

780

760

740

720

700

13.0

13.5

14.0

14.5

15.0

15.5

16.0

16.5

VIN (V)

+125°C

+25°C

–40°C

280

190

205

220

235

250

265

0

10,000

8000

6000

4000

2000

LOAD CURRENT (mA)

VIN = 13V

VIN = 20V

VIN = 16.5V

+125°C

+25°C

–40°C

330

240

250

260

270

280

290

300

310

320

0

15,000

12,000 13,500

10,500

9000

7500

6000

4500

3000

1500

LOAD CURRENT (mA)

VIN = 20V

VIN = 13V

VIN = 16.5V

+125°C

+25°C

–40°C

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