STMicroelectronics L7986TA
3A step-down switching regulator
The L7986TA is a step-down switching regulator with 3.7 A (min.) current limited embedded Power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions.
The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
The HSOP package with exposed pad allows the reduction of RthJA down to 40 °C/W.
Features
- 3 A DC output current
- 4.5 V to 38 V input voltage
- Output voltage adjustable from 0.6 V
- 250 kHz switching frequency, programmable up to 1 MHz
- Internal soft-start and enable
- Low dropout operation: 100% duty cycle
- Voltage feed-forward
- Zero load current operation
- Overcurrent and thermal protection
- HSOP8 package
- Guarantee overtemperature range (-40 °C to 125 °C)
STSW-eDSim - fast and powerful electrical simulation software for SMPS and analog ICs
eDSim is a fast and powerful electrical simulation tool for SMPS and analog ICs, integrated in the eDesignSuite tool. It features enhanced accuracy and higher convergence speed for SMPS, enabling a simulation time 10-50x faster than the classical analog SPICE simulators.
The tool is a specific version of the SIMPLIS/SIMetrix simulation environment paired with ST model components, for a full electrical simulation with no limitation of nodes and circuit size.
Design your analog circuit using the eDesignSuite engine, display a preview of it in few seconds with full annotated schematic and BOM, and then run the electrical simulation through eDSim to get fast and accurate simulations and reliable design validation, thus reducing the effort and risks related to hardware prototyping.
With the eDSim tool you can also create your schematic from scratch using ST models or simulate your SMPS and analog ICs from a list of predefined ST application schematics - test benches, that you can partially modify according to your needs.
Software release 2024.12 is now available.
Features
- Built-in interface with eDesignSuite
- SMPS circuit full modeling using ST components
- Time domain simulation
- Control loop stability
- Predefined application use-case simulation
- Schematic editor for customization
- Waveform viewer with measurement capabilities
STEVAL-ISA099V1 - 3 A step-down switching demonstration board based on the L7986 in DFN10 package
The STEVAL-ISA099V1 demonstration board is a step-down switching power supply based on the L7986 in DFN10 package.
The L7986 is a step-down regulator with a 3.7 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions.
The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
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