LM2675MX-3.3/NOPB
Power Management
Technical Specifications
| Type | Description |
|---|---|
| Output Type | Fixed |
| Output Voltage | 3.3 V |
| Output Current | 1 A |
| Function | Step-down type |
| Switching Freq Hz | 260 kHz |
| Channels | 1 |
| Quiescent Current | 2.5 mA |
| Type | Description |
|---|---|
| Switch Tube (built-in/external) | Built-in |
| Operating Temperature | -40°C~+125°C@(TJ) |
| Features | Cycle-by-cycle current limiting;Overcurrent Protection |
| Topology | Buck |
| Supply Voltage | 6.5V~40V |
| Package / Case | SOIC-8 |
Product Introduction
The LM2675 series of regulators are monolithic integrated DC-DC converter circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load current 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.
Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation 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 data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.
Other features include ±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 standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.
Features
- Efficiency up to 96%
- Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Package
- Requires only 5 External Components
- 3.3-V, 5-V, 12-V, and Adjustable Output Versions
- Adjustable Version Output Voltage Range: 1.21 V to 37 V
- ±1.5% Maximum Output Voltage Tolerance Over Line and Load Conditions
- Ensured 1-A Output Load Current
- Wide Input Voltage Range: 8 V to 40 V
- 260-kHz Fixed Frequency Internal Oscillator
- TTL Shutdown Capability, Low-Power Standby Mode
- Thermal Shutdown and Current Limit Protection
Applications
- Simple High Efficiency (>90%) Step-Down (Buck) Regulator
- Efficient Preregulator for Linear Regulators
- Positive-to-Negative Converter
Datasheet
Alternative Parts
Common LM2675MX-3.3/NOPB alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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