SNVS125D March 1998 – May 2016 LM2598
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 Version
- 7.6 Electrical Characteristics - 5-V Version
- 7.7 Electrical Characteristics - 12-V Version
- 7.8 Electrical Characteristics - Adjustable Voltage Version
- 7.9 Electrical Characteristics - All Output Voltage Versions
- 7.10 Typical Characteristics
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, 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)
- KTW|7
訂購信息
1 Features
- 3.3-V, 5-V, 12-V, and Adjustable Output Versions
- Adjustable Version Output Voltage Range, 1.2-V to 37-V ±4% Max Over Line and Load Conditions
- 1-A Output Current
- Available in 7-Pin TO-220 and DDPAK (Surface Mount) Package
- Input Voltage Range Up to 40 V
- Excellent Line and Load Regulation Specifications
- 150 kHz Fixed Frequency Internal Oscillator
- Shutdown/Soft-start
- Out of Regulation Error Flag
- Error Output Delay
- Low Power Standby Mode, IQ, Typically 85 μA
- High Efficiency
- Uses Readily Available Standard Inductors
- Thermal Shutdown and Current Limit Protection
2 Applications
- Simple High-Efficiency Step-down (Buck) Regulator
- Efficient Preregulator for Linear Regulators
- On-Card Switching Regulators
- Positive to Negative Converter
3 Description
The LM2598 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load 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.
The LM2598 is a member of the LM259x family.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, error flag delay and error flag output.
The LM2598 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower-frequency switching regulators. Available in a standard 7-lead TO-220 package with several different lead bend options, and a 7-lead DDPAK surface mount package. Typically, for output voltages less than 12 V, and ambient temperatures less than 50°C, no heat sink is required.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM2598 | TO-220 (7) | 14.986 mm × 10.16 mm |
| TO-263 (7) | 10.10 mm × 8.89 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application
