LTC3713Low Input Voltage, High Power, No RSENSE™Synchronous Buck DC/DC Controller | Power Management (PMIC) | 3 | Active | The LTC3713 is a high current, high efficiency synchronous buck switching regulator controller optimized for use with very low input supply voltages. It operates from inputs as low as 1.5V and provides a regulated output voltage from 0.8V up to (0.9)VIN. The controller uses a valley current control architecture to enable high operating frequencies without requiring a sense resistor.Operating frequency is selected by an external resistor and is compensated for variations in VINand VOUT. The LTC3713 uses a pair of standard 5V logic-level N-channel external MOSFETs, eliminating the need for expensive P-channel or low threshold devices.Discontinuous mode operation provides high efficiency operation at light loads. A forced continuous control pin reduces noise and RF interference, and can assist secondary winding regulation by disabling discontinuous operation when the main output is lightly loaded. Fault protection is provided by internal foldback current limiting,an output overvoltage comparator and an optional short-circuit shutdown timer.ApplicationsTelecom Card 3.3V, 2.5V, 1.8V Step-DownBus Termination (DDR memory, SSTL)Synchronous Buck with General Purpose BoostLow VINSynchronous Boost |
LTC3714Intel Compatible, Wide Operating Range, Step-Down Controller with Internal Op Amp | Integrated Circuits (ICs) | 2 | Active | The LTC3714 is a synchronous step-down switching regulator controller for CPU power. An output voltage between 0.6V and 1.75V is selected by a 5-bit code (Intel mobile VID specification). The controller uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in VINand VOUT.Discontinuous mode operation provides high efficiency operation at light loads. A forced continuous control pin reduces noise and RF interference and can assist secondary winding regulation by disabling discontinuous mode when the main output is lightly loaded. Internal op amp allows programmable offsets to the output voltage during power saving modes.Fault protection is provided by internal foldback current limiting, an output overvoltage comparator and optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit level is user programmable. Wide supply range allows operation from 4V to 36V at the input.ApplicationsPower Supply for Mobile Pentium®Processors and Transmeta ProcessorsNotebook and Portable Computers |
| Evaluation Boards | 3 | Active | |
| Voltage Regulators - Special Purpose | 4 | Active | |
LTC3717-1Wide Operating Range, No RSENSE™Step-Down Controller for DDR/QDR Memory Termination | Integrated Circuits (ICs) | 1 | Active | The LTC3717-1 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate™(QDR™) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles with or without a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in VINand VOUT.Forced continuous operation reduces noise and RF interference. Output voltage is internally set to half of VREF, which is user programmable.Fault protection is provided by an output overvoltage comparator and optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit level is symmetrical and user programmable. Wide supply range allows operation from 4V to 36V at the VCCinput.Von PinPackageLTC3717NoSSOP-16LTC3717-1YesQFN-32ApplicationsBus Termination: DDR and QDR Memory, SSTL, HSTL, ...Notebook Computers, Desktop ServersTracking/Margining Power Supply |
LTC3718Low Input Voltage, DC/DC Controller for DDR/QDR Memory Termination | Special Purpose Regulators | 2 | Active | The LTC3718 is a high current, high efficiency synchronous switching regulator controller for DDR and QDR™memory termination. It operates from an input as low as 1.5V and provides a regulated output voltage equal to (0.5)VIN. The controller uses a valley current control architecture to enable high frequency operation with very low on-times without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in VINand VOUT. The LTC3718 uses a pair of standard 5V logic level N-channel external MOSFETs, eliminating the need for expensive P-channel or low threshold devices.Forced continuous operation reduces noise and RF interference. Fault protection is provided by internal foldback current limiting, an output overvoltage comparator and an optional short-circuit timer. Soft-start capability for supply sequencing can be accomplished using an external timing capacitor. OPTI-LOOP®compensation allows the transient response to be optimized over a wide range of loads and output capacitors.ApplicationsBus Termination: DDR/QDR Memory, SSTL, HSTL,...Servers, RAID SystemsDistributed Power SystemsSynchronous Buck with General Purpose Boost |
| Voltage Regulators - Special Purpose | 2 | Active | |
| Integrated Circuits (ICs) | 2 | Active | |
| PMIC | 4 | Active | |
| Integrated Circuits (ICs) | 12 | Active | |
