Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power

The TPS51120 is a highly sophisticated dual current mode synchronous Step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High current, 100-mA, 5-V or 3.3-V on-board linear Regulators have glitch-free Switch over function to SMPS and CAN be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP? mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.
The TPS51120 32-pin QFN package is specified from -40C to 85C ambient temperature.
By Texas Instruments
TPS51120 's PackagesTPS51120 's pdf datasheet

TPS51120 pdf datasheet download

TPS51120 Pinout, Pinouts
TPS51120 pinout,Pin out
This is one package pinout of TPS51120,If you need more pinouts please download TPS51120's pdf datasheet.

TPS51120 Application circuits
TPS51120 circuits
This is one application circuit of TPS51120,If you need more circuits,please download TPS51120's pdf datasheet.

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