Description
National Semiconductor LM2675N-12/NOPB Simple Switcher Power Converter High Efficiency 1A Step-down Voltage Regulator, Buck DC to DC Converter 40V to 8V SMT / SMD PDIP-8 RoHS
Specifications
Manufacturer: Texas Instruments
Product Category: Voltage Regulators – Switching Regulators
RoHS: RoHS Compliant
Mounting Style: Through Hole
Package / Case: PDIP-8
Output Voltage: 12 V
Output Current: 1 A
Number of Outputs: 1 Output
Input Voltage MAX: 40 V
Topology: Buck
Input Voltage MIN: 8 V
Switching Frequency: 260 kHz
Maximum Operating Temperature: + 125 C
Series: LM2675
Brand: Texas Instruments
Development Kit: LM2675-5.0EVAL
Minimum Operating Temperature: – 40 C
Packaging: Tube
Factory Pack Quantity: 40
Tradename: SIMPLE SWITCHER
Type: Step Down
Unit Weight: 0.015521 oz
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 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. Other features include a guaranteed ± 1.5% tolerance on output voltage within specified input voltages and output load conditions, and 10% on the oscillator frequency. External shutdown is included, featuring typically 50 µA stand-by current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions. To simplify the LM2675 buck regulator design procedure, there exists computer design software, LM267X Made Simple version 6.0.
Manufacturer:National Semiconductor
Datasheet:lm2675.pdf
