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LM2594HV Datenblatt(PDF) 1 Page - Texas Instruments

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Teilenummer LM2594HV
Bauteilbeschribung  SIMPLE SWITCHER Power Converter 150-kHz 0.5-A Step-Down Voltage Regulator
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM2594, LM2594HV
SNVS118D – DECEMBER 1999 – REVISED MAY 2016
LM2594, LM2594HV SIMPLE SWITCHER® Power Converter 150-kHz 0.5-A Step-Down
Voltage Regulator
1
1 Features
1
3.3-V, 5-V, 12-V, and Adjustable Output Versions
Adjustable Version Output Voltage Range: 1.2 V
to 37 V (57 V for the HV Version), ±4% Maximum
Over Line and Load Conditions
Available in 8-Pin Surface-Mount SOIC and 8-Pin
PDIP Packages
Ensured 0.5-A Output Current
Input Voltage Range up to 60 V
Requires Only 4 External Components
150-kHz Fixed-Frequency Internal Oscillator
TTL Shutdown Capability
Low Power Standby Mode, IQ Typically 85 μA
High Efficiency
Uses Readily-Available Standard Inductors
Thermal Shutdown and Current-Limit Protection
2 Applications
Simple High-Efficiency Step-Down (Buck)
Regulator
Efficient Preregulator for Linear Regulators
On-Card Switching Regulators
Positive-to-Negative Convertor
3 Description
The LM2594xx series of regulators are monolithic
integrated circuits that provide all the active functions
for a step-down (buck) switching regulator, capable of
driving a 0.5-A load with excellent line and load
regulation. These devices are available in fixed output
voltages of 3.3 V, 5 V, 12 V, and an adjustable output
version, and are packaged in a 8-pin PDIP and a 8-
pin surface-mount SOIC package.
Requiring
a
minimum
number
of
external
components, these regulators are simple to use and
feature internal frequency compensation, a fixed-
frequency oscillator, and improved line and load
regulation specifications.
The
LM2594xx
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. Because of its
high efficiency, the copper traces on the printed-
circuit board are normally the only heat sinking
needed.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM2597, LM2597HV
SOIC (8)
4.90 mm × 3.91 mm
PDIP (8)
9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
Fixed Output Voltage Versions


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