AIC1574 查看數據表（PDF） - Analog Intergrations

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比赛名单

AIC1574

5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers

Analog Intergrations 

n TYPICAL PERFORMANCE CHARACTERISTICS

AIC1574

PGOOD

SS

VOUT4

VOUT2

VOUT3

VO U T 1

SS

VDAC=3.5V

VDAC=2V

VDAC=1.3V

Fig. 1 Soft Start Interval with 4 Outputs and PGOOD

Internal Compensation Gain of PWM Error Amplifier

30

90°C

25

20

-40 °C

15

22°C

10

5

0

-5

1k

10k

100k

1M

Fig. 3

Frequency (Hz)

Supply Current vs. Frequency

120

V CC=12V

100

CUG1=CLG1=C

C=4.7nF

80

C=3.3nF

60

C=1.5nF

40

C=680pF

20

0

200k 300k

Fig. 5

400k 500k 600k 700k 800k

Switching Frequency (Hz)

C=0

900k

1M

Fig. 2

10M

Soft Start Initiates PWM Output

RT Resistance vs. Frequency

RT Pull Up to 12V

1M

100k

RT Pull Down to GND

10k

1k

10k

Fig. 4

100k

1M

Switching Frequency (Hz)

Over Current ON Inductor

Over Load

Applied

Inductor

Current 5A/div

Fig. 6

SS

Fault

6

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