LM2594HVMX-3.3/NOPB LM2594N-5.0/NOPB Power Regulator IC Switching Voltage Regulators SIMPLE SWITCHER Power Converter
digital voltage regulator ic
,electronic voltage regulator circuit
LM2594HVMX-3.3/NOPB LM2594N-5.0/NOPB Power Regulator IC Switching Voltage Regulators SIMPLE SWITCHER Power Converter
1 Features
- 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
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM2597, LM2597HV |
SOIC (8) |
4.90 mm × 3.91 mm |
|
PDIP (8) |
9.81 mm × 6.35 mm |
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