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Maximum Supply Voltage: | 63V | ON/OFF Pin Voltage: | −0.3 ≤ V ≤ +25V |
---|---|---|---|
Feedback Pin Voltage: | −0.3 ≤ V ≤ +25V | Output Voltage To Ground (Steady State): | −1V |
Power Dissipation: | Internally Limited | Storage Temperature Range: | −65˚C To +150˚C |
High Light: | multi emitter transistor,silicon power transistors |
LM2592HV
SIMPLE SWITCHER®Power Converter 150 kHz 2A Step-Down Voltage Regulator
General Description
The LM2592HV series of regulators are monolithic integrated 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 devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.
This series of switching regulators is similar to the LM2593HV, but without some of the supervisory and performance features of the latter.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, improved line and load specifications and a fixed-frequency oscillator.
The LM2592HV 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 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 Surface mount package.
Other features include a guaranteed ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90 µA 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
Applications
Note: † Patent Number 5,382,918.
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Maximum Supply Voltage (VIN) 63V
ON/OFF Pin Voltage −0.3 ≤ V ≤ +25V
Feedback Pin Voltage −0.3 ≤ V ≤ +25V
Output Voltage to Ground (Steady State) −1V
Power Dissipation Internally limited
Storage Temperature Range −65˚C to +150˚C
ESD Susceptibility Human Body Model (Note 2) 2 kV
Lead Temperature
S Package
Vapor Phase (60 sec.) +215˚C
Infrared (10 sec.) +245˚C
T Package (Soldering, 10 sec.) +260˚C
Maximum Junction Temperature +150˚C
Operating Conditions
Temperature Range −40˚C ≤ TJ ≤ +125˚C
Supply Voltage 4.5V to 60V
Typical Application (Fixed Output Voltage Versions)
Block Diagram
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