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LM2593HVT-ADJ Datasheet

  • LM2593HVT-ADJ

  • SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage...

  • 21頁

  • NSC

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LM2593HV SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage Regulator, with
Features
December 2001
LM2593HV
SIMPLE SWITCHER
廬
Power Converter 150 kHz 2A
Step-Down Voltage Regulator, with Features
General Description
The LM2593HV series of regulators are monolithic inte-
grated circuits that provide all the active functions for a
step-down (buck) switching regulator, capable of driving a
2A load with excellent line and load regulation. These de-
vices are available in fixed output voltages of 3.3V, 5V, and
an adjustable output version.
This series of switching regulators is similar to the
LM2592HV with additional supervisory and performance fea-
tures.
Requiring a minimum number of external components, these
regulators are simple to use and include internal frequency
compensation
鈥?/div>
, improved line and load specifications,
fixed-frequency oscillator, Shutdown/Soft-start, output error
flag and flag delay.
The LM2593HV 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 7-lead TO-220 package with several
different lead bend options, and a 7-lead TO-263 Surface
mount package.
Other features include a guaranteed
鹵
4% tolerance on out-
put voltage under all conditions of input voltage and output
load conditions, and
鹵
15% on the oscillator frequency. Ex-
ternal shutdown is included, featuring typically 90 碌A(chǔ)
standby current. Self protection features include a two stage
current limit for the output switch and an over temperature
shutdown for complete protection under fault conditions.
Features
n
3.3V, 5V, and adjustable output versions
n
Adjustable version output voltage range, 1.2V to 57V
鹵
4% max over line and load conditions
n
Guaranteed 2A output load current
n
Available in 7-pin TO-220 and TO-263 (surface mount)
Package
n
Input voltage range up to 60V
n
150 kHz fixed frequency internal oscillator
n
Shutdown/Soft-start
n
Out of regulation error flag
n
Error flag delay
n
Low power standby mode, I
Q
typically 90 碌A(chǔ)
n
High Efficiency
n
Thermal shutdown and current limit protection
Applications
n
n
n
n
Simple high-efficiency step-down (buck) regulator
Efficient pre-regulator for linear regulators
On-card switching regulators
Positive to Negative converter
Note:
鈥?/div>
Patent Number 5,382,918.
Typical Application
(Fixed Output Voltage Versions)
10133301
SIMPLE SWITCHER
廬
and
Switchers Made Simple
廬
are registered trademarks of National Semiconductor Corporation.
漏 2001 National Semiconductor Corporation
DS101333
www.national.com

LM2593HVT-ADJ 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 1.2 V to 57 V

  • 2 A

  • 173 KHz

  • Through Hole

  • TO-220

  • Tube

  • 1

  • 45

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