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LM2596SX-ADJ Datasheet(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM2596SX-ADJ
Description  SIMPLE SWITCHER짰 Power Converter 150 kHz 3A Step-Down Voltage Regulator
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2596SX-ADJ Datasheet(HTML) 8 Page - National Semiconductor (TI)

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Typical Performance Characteristics
Continuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD =2A
L = 32 µH, C
OUT = 220 µF, COUT ESR=50 mΩ
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 500 mA
L = 10 µH, C
OUT = 330 µF, COUT ESR=45 mΩ
01258317
Horizontal Time Base: 2 µs/div.
A: Output Pin Voltage, 10V/div.
B: Inductor Current 1A/div.
C: Output Ripple Voltage, 50 mV/div.
01258318
Horizontal Time Base: 2 µs/div.
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 100 mV/div.
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A
L = 32 µH, C
OUT = 220 µF, COUT ESR=50 mΩ
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A
L = 10 µH, C
OUT = 330 µF, COUT ESR=45 mΩ
01258319
Horizontal Time Base: 100 µs/div.
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
01258320
Horizontal Time Base: 200 µs/div.
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
Test Circuit and Layout Guidelines
Fixed Output Voltage Versions
01258322
CIN
— 470 µF, 50V, Aluminum Electrolytic Nichicon “PL Series”
COUT
— 220 µF, 25V Aluminum Electrolytic, Nichicon “PL Series”
D1
— 5A, 40V Schottky Rectifier, 1N5825
L1
— 68 µH, L38
www.national.com
8


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