LM2596T-12/NOPB National Semiconductor, LM2596T-12/NOPB Datasheet - Page 8

IC REG SIMPLE SWITCHER TO-220-5

LM2596T-12/NOPB

Manufacturer Part Number
LM2596T-12/NOPB
Description
IC REG SIMPLE SWITCHER TO-220-5
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet

Specifications of LM2596T-12/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
3A
Frequency - Switching
150kHz
Voltage - Input
4.5 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Bent and Staggered Leads)
Primary Input Voltage
25V
No. Of Outputs
1
Output Voltage
12V
Output Current
3A
No. Of Pins
5
Operating Temperature Range
-40°C To +125°C
Supply Voltage Range
4.5V To 40V
Rohs Compliant
Yes
Filter Terminals
Through Hole
For Use With
551011367-041 - BOARD WEBENCH BUILD IT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2596T-12
*LM2596T-12/NOPB
LM2596T-12

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

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