LM2596 데이터 시트보기 (PDF) - First Components International

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LM2596

Simple switcher Power Converter 150kHz 3A Step-Down Voltage Regulator

First Components International 

LM2596 Simple switcher Power Converter 150kHz

3A Step-Down Voltage Regulator

TYPICAL PERFORMANCE CHARACTERISTICS

Continuous Mode Switching Waveforms

VIN=20V, VOUT=5V, ILOAD=2A

L=32µH, COUT=220µF, COUTESR=50mΩ

20V

A 10V

0V

2A

B 1A

0A

Discontinuous Mode Switching Waveforms

VIN=20V, VOUT=5V, ILOAD=500mA

L=10µH, COUT=330µF, COUTESR=45mΩ

20V

A 10V

0V

1A

B

0A

C AC/

div

C AC/

div

A: Output Pin Voltage,10V/div

B: Inductor Current 1A/div

C: Output Ri pple Voltage,50mV/div

Horizontal Time Base: 2µs/div

Load Transient Response for Continuous Mode

VIN=20V, VOUT=5V, ILOAD=500mA to 2A

L=32µH, COUT=220µF, COUTESR=50mΩ

A: Output Pin Voltage,10V/div

B: Inductor Current 1A/div

C: Output Ri pple Voltage,100mV/div

Horizontal Time Base: 2µs/div

Load Transient Response for Discontinuous Mode

VIN=20V, VOUT=5V, ILOAD=500mA to 2A

L=10µH, COUT=330µF, COUTESR=45mΩ

A AC

div

A AC

div

B 1A

0A

A: Output Voltage,100mV/div.(AC)

B: 500mA to 2A Load Pulse

Horizontal Time Base: 100µs/div

B 1A

0A

A: Output Voltage,100mV/div. (AC)

B: 500mA to 2A Load Pulse

Horizontal Time Base: 200µs/div

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