LM2675MX-5.0/NOPB SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
diode rectifier circuit
,bridge rectifier circuit
LM2675MX-5.0 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
Features
► Efficiency up to 96%
► Available in SO-8, 8-pin DIP and LLP packages
► Computer Design Software LM267X Made Simple (version 6.0)
►Simple and easy to design with
► Requires only 5 external components
► Uses readily available standard inductors
► 3.3V, 5.0V, 12V, and adjustable output versions
► Adjustable version output voltage range: 1.21V to 37V
► ±1.5% max output voltage tolerance over line and load conditions ► Guaranteed 1A output load current
► 0.25Ω DMOS Output Switch
►Wide input voltage range: 8V to 40V
► 260 kHz fixed frequency internal oscillator
► TTL shutdown capability, low power standby mode
► Thermal shutdown and current limit protection
General Description
The LM2675 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, and an adjustable output version
Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation (Patent Nos. 5,382,918 and 5,514,947) and a fixed frequency oscillator.
The LM2675 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Because of its very high efficiency (>90%), the copper traces on the printed circuit board are the only heat sinking needed.
A family of standard inductors for use with the LM2675 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the datasheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.
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| ATXMEGA64A3-AU | 500 | ATMEL | 10+ | QFP64 |
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| LM2841XMKX-ADJ | 3000 | TI | 14+ | TSOT-23-6 |
| LTC2250CUH | 1655 | LINEAR | 14+ | QFN |
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| ML4800CP | 11000 | FAIRCHILD | 16+ | DIP |
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| MAX6350MJA | 4381 | MAXIM | 14+ | CDIP |
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| YMF719E-S | 100 | YAMAHA | 09+ | TQFP |
| MAX3232CSE | 10000 | MAXIM | 16+ | SOP |
| MC145428P | 7634 | MOT | 16+ | DIP |
| R1127NC32P | 600 | WESTCODE | 13+ | MODULE |
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| MR5060 | 6274 | SHINDENGE | 14+ | ZIP |
| A1106LUA | 4500 | ALLEGRO | 14+ | SIP-3 |
| LM7807 | 4823 | UTC | 14+ | TO-220 |
| LM4050CIM3X-4.1 | 5760 | NSC | 15+ | SOT-23-3 |
| MW7IC18100NBR1 | 574 | FREESCALE | 16+ | TO-272 |
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