Advanced Two-phase Synchronous Triple Regulator Controller For Notebook Cpus - National Semiconductor

The LM2633 is a feature-rich IC that combines three regu- lator controllers - two current mode synchronous buck regu- lator controllers and a linear Regulator controller. The two Switching Regulator controllers operate 180 out of phase. This feature reduces the input ripple RMS current, resulting in a smaller input Filter The first switching controller (Channel 1) features an Intel mobile CPU compatible precision 5-bit digital-to-analog con- verter which programs the output voltage from 0.925V to 2.00V. It is also compatible with the dynamic VID require- ments. The second switching controller (Channel 2) is ad- justable between 1.25V to 6.0V. Use of synchronous rectification and pulse-skip operation at light load achieves high efficiency over a wide load range. Fixed-frequency operation CAN be obtained by disabling the pulse-skip mode. Current-mode feedback control assures excellent line and load regulation and a wide loop bandwidth for good re- sponse to fast load transient events. Current mode control is achieved through sensing the Vds of the top FET and thus an external sense resistor is not necessary. A power good signal is available to indicate the general health of the output voltages. A unique feature is the Analog soft-start for the switching controllers is independent of the slew rate of the input volt- age. This will make the soft start behavior more predictable and controllable. An internal 5V rail is available externally for boot-strap circuitry (only) when no 5V is available from other sources. By National Semiconductor Corporation
LM2633 's PackagesLM2633 's pdf datasheet

LM2633 Pinout, Pinouts
LM2633 pinout,Pin out
This is one package pinout of LM2633,If you need more pinouts please download LM2633's pdf datasheet.

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