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CYStech

LM2596 Datasheet Preview

LM2596 Datasheet

3A PWM Buck DC/DC Converter

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Spec. No. : C548F5
CYStech Electronics Corp. Issued Date : 2007.12.11
Revised Date :
Page No. : 1/12
150kHz, 3A PWM Buck DC/DC Converter
LM2596-XXE5/F5
Description
The LM2596-XXE5/F5 series of regulators are monolithic ICs that provide all active functions for a step-down
(buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are
available in fixed output voltage 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-XXE5/F5 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter
components than what would be needed with lower frequency switching regulators. Available in standard 5-lead
TO-220 and TO-263 packages with several different lead bend options. A standard series of inductors are available
from several different manufacturers optimized for use with the LM2596-XXE5/F5 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 80μA 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.
Features
3.3V, 5V, 12V, and adjustable output versions
Adjustable version output voltage range, 1.3V to 37V±4% max over line and load conditions
150kHz±15% fixed switching frequency
TTL shutdown capability
Operating voltage can be up to 40V
Output load current:3A
TO220-5L and TO263-5L packages
Low power standby mode.
Thermal shutdown and current limit protection.
High efficiency
Built-in switching transistor on chip
Requires only 4 external components
Use readily available standard inductors
Applications
Simple high-efficiency step-down (buck) regulator.
Positive to negative converter (Buck-Boost).
On-card switching regulators.
LM2596-XXE5/F5
CYStek Product Specification




CYStech

LM2596 Datasheet Preview

LM2596 Datasheet

3A PWM Buck DC/DC Converter

No Preview Available !

Pin Assignment
Spec. No. : C548F5
CYStech Electronics Corp. Issued Date : 2007.12.11
Revised Date :
Page No. : 2/12
Block Diagram
Ordering Information
LM2596-XXE5/F5
CYStek Product Specification


Part Number LM2596
Description 3A PWM Buck DC/DC Converter
Maker CYStech
PDF Download

LM2596 Datasheet PDF






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