Part Number: LM2675, LM2675N-ADJ, LM2675M-5.0
Function: 1A, Step-Down Voltage Regulator
Package: DIP, SOP 8 Pin Type
Manufacturer: National Semiconductor, Texas Instruments
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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.
Pinout:
Features
1. Efficiency up to 96%
2. Computer Design Software LM267X Made Simple
3. Simple and easy to design with
4. Requires only 5 external components
5. Uses readily available standard inductors
6. 3.3V, 5.0V, 12V, and adjustable output versions
7. Adjustable version output voltage range: 1.21V to 37V
8. ±1.5% max output voltage tolerance over line and load conditions
9. Guaranteed 1A output load current
10. 0.25Ω DMOS Output Switch
11. Wide input voltage range: 8V to 40V
12. 260 kHz fixed frequency internal oscillator
13. TTL shutdown capability, low power standby mode
14. Thermal shutdown and current limit protection
Application Circuit
1. Simple High Efficiency (>90%) Step-Down (Buck) Regulator
2. Efficient Pre-Regulator for Linear Regulators
3. Positive-to-Negative Converter
