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型号: | LM2576S-5.0 |
厂商: |
|
分类: | 半导体 , 集成电路 - IC |
描述: | voltage regulators - switching regulators |
PDF: | 预览 |
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Datasheet下载地址
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LM2576S-5.0的详细信息
Manufacturer: | Texas Instruments |
---|---|
Product Category: | Voltage Regulators - Switching Regulators |
RoHS: | No |
Mounting Style: | SMD/SMT |
Package / Case: | TO-263-5 |
Brand: | Texas Instruments |
Packaging: | Tube |
Series: | LM2576 |
Factory Pack Quantity: | 45 |
Type: | Voltage Converter |
SNVS107C –JUNE 1999–REVISED APRIL 2013
®
1
FEATURES
DESCRIPTION
The LM2576 series of regulators are monolithic
integrated circuits that provide all the 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 voltages
of 3.3V, 5V, 12V, 15V, and an adjustable output
version.
23
•
3.3V, 5V, 12V, 15V, and Adjustable Output
Versions
•
Adjustable Version Output Voltage
Range,1.23V to 37V (57V for HV Version) ±4%
Max Over Line and Load Conditions
•
•
Specified 3A Output Current
Wide Input Voltage Range, 40V Up to 60V for
HV Version
Requiring
a
minimum number of external
components, these regulators are simple to use and
include internal frequency compensation and a fixed-
frequency oscillator.
•
•
•
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
The LM2576 series offers
a
high-efficiency
TTL Shutdown Capability, Low Power Standby
Mode
replacement for popular three-terminal linear
regulators. It substantially reduces the size of the
heat sink, and in some cases no heat sink is
required.
•
•
•
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit
Protection
A standard series of inductors optimized for use with
the LM2576 are available from several different
manufacturers. This feature greatly simplifies the
design of switch-mode power supplies.
•
P+ Product Enhancement Tested
APPLICATIONS
Other features include a specified ±4% tolerance on
output voltage within specified input voltages and
output load conditions, and ±10% on the oscillator
frequency. External shutdown is included, featuring
50 μA (typical) standby current. The output switch
includes cycle-by-cycle current limiting, as well as
thermal shutdown for full protection under fault
conditions.
•
Simple High-Efficiency Step-Down (Buck)
Regulator
•
•
•
Efficient Pre-Regulator for Linear Regulators
On-Card Switching Regulators
Positive to Negative Converter (Buck-Boost)
TYPICAL APPLICATION
(Fixed Output Voltage Versions)
Figure 1.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SIMPLE SWITCHER is a registered trademark of Texas Instruments.
2
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated
LM2576S-5.0相关文档
- Function Diagram: fbd_snvs107c
LM2576S-5.0应用笔记
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