SNVS136L September 1998 – June 2016 LM2672
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics - 3.3 V
- 7.6 Electrical Characteristics - 5 V
- 7.7 Electrical Characteristics - 12 V
- 7.8 Electrical Characteristics - Adjustable
- 7.9 Electrical Characteristics - All Output Voltage Versions
- 7.10 Typical Characteristics
- 7.11 Typical Characteristics - Fixed Output Voltage Versions
- 8 Parameter Measurement Information
- 9 Detailed Description
-
10Application and Implementation
- 10.1 Application Information
- 10.2
Typical Applications
- 10.2.1 Typical Application for Fixed Output Voltage Versions
- 10.2.2 Typical Application for Adjustable Output Voltage Versions
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
1 Features
- Efficiency up to 96%
- Available in 8-Pin SOIC and PDIP Packages
- 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
- Specified 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
- Soft-Start and Frequency Synchronization
- Thermal Shutdown and Current Limit Protection
2 Applications
3 Description
The LM2672 series of regulators are monolithic integrated DC-DC converter 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, fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization.
The LM2672 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required 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 required.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM2672 | SOIC (8) | 5.00 mm × 6.20 mm |
| PDIP (8) | 10.16 mm × 6.60 mm | |
| WSON (16) | 5.00 mm × 5.00 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application
