LM2596 查看數據表（PDF） - ON Semiconductor

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LM2596

3.0 A, Step-Down Switching Regulator

ON Semiconductor 

10 V

A

0

4.0 A

B 2.0 A

0

4.0 A

C 2.0 A

0

D

LM2596

TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 15)

2 ms/div

Figure 13. Switching Waveforms

100 mV

Output

Voltage 0

Change

- 100 mV

3.0 A

Load 2.0 A

Current

1.0 A

0

100 ms/div

Figure 14. Load Transient Response

Vout = 5 V

A: Output Pin Voltage, 10 V/div

B: Switch Current, 2.0 A/div

C: Inductor Current, 2.0 A/div, AC−Coupled

D: Output Ripple Voltage, 50 mV/div, AC−Coupled

Horizontal Time Base: 5.0 ms/div

8.5 V - 40 V

Unregulated

DC Input

Adjustable Output Voltage Versions

Feedback

Vin

LM2596

4

L1

1

Output

33 mH

Cin

100 mF

3 GND

2

5 ON/OFF

D1

1N5822

Cout

220 mF

Vout

5,000 V

CFF

R2

Load

R1

ǒ Ǔ Vout + Vref 

1.0

) 

R2

R1

ǒ Ǔ R2 + R1 VVoreuft  1.0

Where Vref = 1.23 V, R1

between 1.0 k and 5.0 k

Figure 15. Typical Test Circuit

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