Part Number(s)
(NSID)Top View
Type
Pins
MSL Rating
Peak Reflow
RoHS
StatusCAD Symbols
Models
Package
Marking
Format
LM2596S-12/NOPB
LM2596S-12
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-12 P+
LM2596S-3.3/NOPB
LM2596S-3.3
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-3.3 P+
LM2596S-5.0/NOPB
LM2596S-5.0
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-5.0 P+
LM2596S-ADJ/NOPB
LM2596S-ADJ
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-ADJ P+
LM2596SX-12/NOPB
LM2596SX-12
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-12 P+
LM2596SX-3.3/NOPB
LM2596SX-3.3
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-3.3 P+
LM2596SX-5.0/NOPB
LM2596SX-5.0
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-5.0 P+
LM2596SX-ADJ/NOPB
LM2596SX-ADJ
TO-263
5
3
3245
235Detail
Download
N/A
NSUZXYTTE#
LM2596S
-ADJ P+
LM2596T-12/NOPB
LM2596T-12
TO-220
5
1
1NA
NADetail
Download
N/A
NSUZXYTTE#
LM2596T
-12 P+
LM2596T-3.3/NOPB
LM2596T-3.3
TO-220
5
1
1NA
NADetail
Download
N/A
NSUZXYTTE#
LM2596T
-3.3 P+
LM2596T-5.0/NOPB
LM2596T-5.0
TO-220
5
1
1NA
NADetail
Download
N/A
NSUZXYTTE#
LM2596T
-5.0 P+
LM2596T-ADJ/NOPB
LM2596T-ADJ
TO-220
5
1
1NA
NADetail
Download
N/A
NSUZXYTTE#
LM2596T
-ADJ P+
Description
The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, and a fixed-frequency oscillator.
The LM2596 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package.
A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies.
Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.
• | Simple high-efficiency step-down (buck) regulator |
• | On-card switching regulators |
• | Positive to negative converter |
• | 3.3V, 5V, 12V, and adjustable output versions |
• | Adjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditions |
• | Available in TO-220 and TO-263 packages |
• | Guaranteed 3A output load current |
• | Input voltage range up to 40V |
• | Requires only 4 external components |
• | Excellent line and load regulation specifications |
• | 150 kHz fixed frequency internal oscillator |
• | TTL shutdown capability |
• | Low power standby mode, IQ typically 80 µA |
• | High efficiency |
• | Uses readily available standard inductors |
• | Thermal shutdown and current limit protection |
Diagrams
Typical Application
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Block Diagram
|
Typical Performance source:ShenZhen henlito electronic co.,ltd.
web:www.henlito.com |