SNVS123D April 1998 – May 2016 LM2599
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
- 9.1
Application Information
- 9.1.1 Soft-Start Capacitor (CSS)
- 9.1.2 Delay Capacitor (CDELAY)
- 9.1.3 Feedforward Capacitor (CFF) for Adjustable Output Voltage Version Only
- 9.1.4 Input Capacitor (CIN)
- 9.1.5 Output Capacitor (COUT)
- 9.1.6 Catch Diode
- 9.1.7 Inductor Selection
- 9.1.8 Output Voltage Ripple and Transients
- 9.1.9 Open Core Inductors
- 9.2 Typical Applications
- 9.1
Application Information
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
- KTW|7
Orderable Information
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% Maximum Over Line and Load Conditions
- 3-A Output Current
- Available in 7-Pin TO-220 and TO-263 (Surface-Mount) Package
- Input Voltage Range Up to 40 V
- 150-kHz Fixed-Frequency Internal Oscillator
- Shutdown and Soft-Start
- Out-of-Regulation Error Flag
- Error Output Delay
- Low Power Standby Mode, IQ, Typically 80 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 LM2599 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-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, with additional supervisory and performance features added.
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 and Soft-start, error flag delay, and error flag output.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM2599 | 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
