- 3.3V, 5V, 12V and adjustable output versions
- The adjustable version of the output voltage range from 1.2V to 37V ± line and load conditions up to 4%.
- Guaranteed 3A output current
- Available in 7-pin TO-220 and TO-263 (surface mount) packages
- Input voltage range up to 40V
- Internal oscillator at fixed frequency at 150 kHz
- Shutdown/soft start
- Error flags for governance
- Error output delay
- Low-power standby mode，IQ is typically 80μA
- High efficiency
- Use off-the-shelf standard inductors
- Thermal shutdown and current limit protection
illustrate
The LM2599 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down switching regulator (buck), driving an excellent line and load regulation 3A load capacity. These devices are available with fixed output voltages in 3.3V, 5V, 12V, and adjustable output versions.
This series of switching regulators is similar to the LM2596 series, adding additional regulatory and performance features.
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 oscillators, shutdown/soft start, error flag delay, and error flag output.
The LM2599 series switches at 150 kHz so that smaller size will require filter assemblies with lower frequency switching regulators. The standard 7-pin TO-220 package comes with several different bending options, and the 7-pin TO-263 surface mount package.
Standard inductor series (through-hole and surface mount types) can be produced from several different manufacturers optimized using the LM2599 series. This feature greatly simplifies the design of switching power supplies.
Other features include guaranteed 4% tolerance under all conditions under input voltage and output load conditions ± output voltage, and 15% frequency ± oscillator. Includes external shutdown with typical 80μA standby current. Self-protection features include a two-stage current limit, output switching, and complete protection under overtemperature shutdown fault conditions.
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- Simple high efficiency buck (buck) regulator
- Efficient preconditioning of linear regulators
- Switching regulator on the card
- Aggressive negative voltage converter
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