IC, STEP-DOWN VOLTAGE REGULATOR, TO-220

LM2596T-ADJ

Manufacturer Part NumberLM2596T-ADJ
DescriptionIC, STEP-DOWN VOLTAGE REGULATOR, TO-220
ManufacturerNational Semiconductor
LM2596T-ADJ datasheet
 


Specifications of LM2596T-ADJ

Primary Input Voltage40VNo. Of Outputs1
Output Voltage37VOutput Current3A
No. Of Pins5Operating Temperature Range-40°C To +125°C
Supply Voltage Range4.5V To 40VFilter TerminalsThrough Hole
Rohs CompliantYesLead Free Status / RoHS StatusLead free / RoHS Compliant
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Typical Performance Characteristics
Continuous Mode Switching Waveforms
V
= 20V, V
= 5V, I
IN
OUT
L = 32 µH, C
= 220 µF, C
OUT
Horizontal Time Base: 2 µs/div.
A: Output Pin Voltage, 10V/div.
B: Inductor Current 1A/div.
C: Output Ripple Voltage, 50 mV/div.
Load Transient Response for Continuous Mode
V
= 20V, V
= 5V, I
IN
OUT
LOAD
L = 32 µH, C
= 220 µF, C
OUT
Horizontal Time Base: 100 µs/div.
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
Test Circuit and Layout Guidelines
C
— 470 µF, 50V, Aluminum Electrolytic Nichicon “PL Series”
IN
C
— 220 µF, 25V Aluminum Electrolytic, Nichicon “PL Series”
OUT
D1
— 5A, 40V Schottky Rectifier, 1N5825
L1
— 68 µH, L38
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Discontinuous Mode Switching Waveforms
= 2A
V
LOAD
ESR = 50 m
L = 10 µH, C
OUT
01258317
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 100 mV/div.
Load Transient Response for Discontinuous Mode
= 500 mA to 2A
V
IN
ESR = 50 m
L = 10 µH, C
OUT
01258319
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
Fixed Output Voltage Versions
8
= 20V, V
= 5V, I
= 500 mA
IN
OUT
LOAD
= 330 µF, C
ESR = 45 m
OUT
OUT
Horizontal Time Base: 2 µs/div.
= 20V, V
= 5V, I
= 500 mA to 2A
OUT
LOAD
= 330 µF, C
ESR = 45 m
OUT
OUT
Horizontal Time Base: 200 µs/div.
01258322
01258318
01258320