LM2675MX-3.3/NOPB Power Regulator IC Switching Voltage Regulators Pwr Cnvtr Hi Eff 1A SD Vtg Reg
digital voltage regulator ic
,electronic voltage regulator circuit
LM2675MX-3.3/NOPB Power Regulator IC Switching Voltage Regulators Pwr Cnvtr Hi Eff 1A SD Vtg Reg
1 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
2 Applications
-
Simple High Efficiency (>90%) Step-Down (Buck) Regulator
-
Efficient Preregulator for Linear Regulators
-
Positive-to-Negative Converter
3 Description
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.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM2675 |
SOIC (8) |
5.00 mm × 6.20 mm |
|
PDIP (8) |
10.16 mm × 6.60 mm |
|
|
WSON (16) |
5.00 mm × 5.00 mm |
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