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LM2596T Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part # LM2596T
Description  3.0A, 150Khz, Step-Down Switching Regulator
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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LM2596T Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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3.0A, 150Khz, Step-Down Switching Regulator
FEATURES
3.3V, 5.0V, 12V, 15V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.23 to 37V
+/- 4%. Maximum Over Line and Load Conditions
Guaranteed 3.0A Output Current
Wide Input Voltage Range
Requires Only 4 External Components
150Khz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
Moisture Sensitivity Level(MSL) Equals1
Applications
Simple High-Efficiency Step-Down(Buck) Regulator
Efficient Pre-Regulator for Linear Regulators
On-Card Switching Regulators
Positive to Negative Converter(Buck-Boost)
Negative Step-Up Converters
Power Supply for Battery Chargers
DESCRIPTION
ORDERING INFORMATION
The LM2596 series of regulators are monolithic integrated
circuits ideally suited for easy and convenient design of a
step-down switching regualtor(buck converter).
All circuits of this series are capable of driving a 3.0A load
with excellent line and load regulation. These devices are
available in fixed output voltages of 3.3V, 5.0V,12V, 15V,
and an adjustable output version.
These regulatiors were designed to minimize the number of externalcomponents to simplify the
power supply design. Standard series of inductors optimized for use with the LM2576 are offered
by several different inductor manufacturers.
Since the LM2596 converter is a switch-mode power supply, its efficiency is significantly higher in
comparison with popular three-terminal limear reguators, especially with higher input voltages.
available from several different manufacturers. This feature greatly simplifies the design of
switch-mode power supplies. The LM2596 features include a guaranteed +/- 4% tolerance
on output voltage within specified input voltages and output load conditions, and +/-15% on the
oscillator frequency (+/- 2% over 0oC to 125 oC).
External shutdown is included, featuring 80 uA(typical) standby current. The output switch includes
cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions.
TO-220V
HTC
1
LM2596
In many cases, the power dissipated is so low that no heatsink is required or its size could
be reduced dramatically. A standard series of inductors optimized for use with the LM2596 are
LM2596TV-X.X
LM2596T-X.X
Device
Marking
Package
LM2596T-X.X
LM2596T-X.X
TO-220
LM2596R
LM2596R-X.X
TO-263
TO-220V
TO-220
1. Vin
2. Output
3. Ground
4. Feedback
5. On/Off
TO-263(D2)
Oct 2004 - Rev 0


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