SIMPLE SWITCHER® 3A Step Down Voltage Regulator LM2576HVSX-ADJ/NOPB LM2576 / LM2576HV
bridge rectifier circuit
,signal schottky diode
LM2576/LM2576HV Series SIMPLE SWITCHER®
3A Step-Down Voltage Regulator
FEATURES
• 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
• Specified 3A Output Current
• High Efficiency
• Requires Only 4 External Components
• Uses Readily Available Standard Inductors
• Thermal Shutdown and Current Limit Protection
• P+ Product Enhancement Tested
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.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed- frequency oscillator.
The LM2576 series offers a high-efficiency 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.
TYPICAL APPLICATION (Fixed Output Voltage Versions)
STOCK LIST
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| MC14106BCP | 6680 | ON | 16+ | DIP |
| QM200HA-2H | 230 | MITSUBISH | 13+ | MODULE |
| MJ11016 | 2089 | ON | 16+ | TO-3 |
| MC33388DR2 | 9416 | FREESCALE | 16+ | SOP |
| LM321M5X | 6229 | NSC | 14+ | SOT23-5 |
| MBRS190T3G | 40000 | ON | 16+ | SMB |
| L6599D | 3510 | ST | 15+ | SOP-16 |
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| PMBT3904 | 780000 | 15+ | SOT-23 | |
| PM10CNA060 | 200 | MITSUBISH | 09+ | MOUDLE |
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| LM3403N | 2969 | NSC | 10+ | DIP-14 |
| LM4050CIM3X-2.5 | 6586 | NSC | 13+ | SOT-23-3 |
| PIC16LF877A-I/PT | 4698 | MICROCHIP | 16+ | QFP |
| MAX4252EUA | 13500 | MAXIM | 15+ | MSOP |
| MC33033DW | 11000 | ON | 16+ | SOP |
| L05172 | 1596 | ST | 15+ | HSSOP36 |
| BT136S-600E | 3829 | 15+ | TO220 | |
| MCP6S21-I/MS | 5560 | MICROCHIP | 16+ | MSOP |
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| LTC3108IGN | 6857 | LT | 16+ | SSOP |
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| ZRA245A02 | 1200 | ZETEX | 10+ | TO-92 |
| LP3855ESX-3.3 | 2263 | NSC | 14+ | TO-263 |
| PIC18F25J10-I/SO | 4558 | MICROCHIP | 15+ | SOP |
| AU6254 | 3000 | ALCOR | 12+ | LQFP48 |
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