LM2612ATL/NOPB Integrated Circuits (ICs)

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LM2612ATL/NOPB, is a compensated, fully integrated, single DC/DC converter that, when combined with an external power MOSFET, produces a programmable switched current source, providing high step-down current-mode control of the output voltage at currents of up to 12 A. This device is the optimal choice for high-speed switch-mode applications that require fast transient response, with high-side current or voltage sensing. LM2612ATL/NOPB belongs to the PMIC - Voltage Regulators – DC DC Switching Regulators classification.

Features and Benefits of LM2612ATL/NOPB

• The traditional methods with transformers and linear regulators are replaced by DC / DC switching regulators. This reduces power losses, decreasing power dissipation, reducing cost, and increasing efficiency.
• Internal MOSFET Driver with Constant Gate Voltage
• Hidden DSP Circuitry for Maximum Performance
• High-Precision Internal Reference with ±1% accuracy
• Wide Input Voltage Range from 10V to 32V

Application Fields of LM2612ATL/NOPB

The application fields of LM2612ATL/NOPB mainly include suppliers of power integrated circuits; micro-power systems such as handheld wireless communication devices and computers; computer disk drives; battery-operated systems; automotive electronics; energy storage systems; power management solutions; server, telecommunications and data communication systems.

Working Principle of LM2612ATL/NOPB

LM2612ATL/NOPB works by combining an external MOSFET switch and a current-mode control loop to deliver a programmable switched current source to the output. The external MOSFET switch confines the current loops of both the input and output sides. The switch essentially acts as a current source, if the transistor base current exceeds a certain threshold, the FET conducts current from the input to output.

LM2612ATL/NOPB works in constant current mode. In this mode, the constant current flows evenly through the switch, regardless of the supply voltage. The voltage feedback loop is used to modulate the switch current to hold the output voltage constant. When the desired output voltage is reached, the switch current can be modulated and the current consumption can be reduced.

The key feature of LM2612ATL/NOPB is the hidden DSP circuitry that enables the device to cycle from burst mode to forced-on mode quickly and accurately, providing the highest efficiency and the lowest noise. Compared with traditional linear-mode control and power MOSFETs, LM2612ATL/NOPB eliminates the need for output capacitor and diode, reduces cost, power consumption and size.

Conclusion

LM2612ATL/NOPB belongs to the PMIC - Voltage Regulators – DC DC Switching Regulators category and is ideal for high speed switch-mode applications that require fast transient response with high-side current or voltage sensing. This device is specifically designed for micro-power systems such as handheld wireless communication devices and computers, and computer disk drives, and offers the advantages of reducing power losses, decreasing dissipation, and increasing efficiency.

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