ADP3160 Ver la hoja de datos (PDF) - Analog Devices

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ADP3160

5-Bit Programmable 2-Phase Synchronous Buck Controller

Analog Devices 

5-BIT CODE

100⍀

100nF

ADP3160/ADP3167

1 VID4

2 VID3

3 VID2

4 VID1

5 VID0

6 COMP

7 FB

8 CT

VCC 16

REF 15

CS– 14

PWM1 13

PWM2 12

CS+ 11

PWRGD 10

GND 9

AD820

1.2V

20k⍀

+

1␮F

12V

100nF

VFB

Figure 1. Closed-Loop Output Voltage Accuracy

Test Circuit

10000

1000

100

0

100

200

300

400

500

CT CAPACITOR – pF

Figure 2. Oscillator Frequency vs. Timing Capacitor

ADP3160/ADP3167

4.10

4.05

4.00

3.95

3.90

3.85

0

250 500 750 1000 1250 1500 1750 2000

OSCILLATOR FREQUENCY – kHz

Figure 3. Supply Current vs. Oscillator Frequency

16

TA = 25؇C

VOUT = 1.6V

12

8

4

0

–1

0

1

OUTPUT ACCURACY – % of Nominal

Figure 4. Output Accuracy Distribution

REV. B

–5–

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