LTC3719 - LTC3719是2-Phase, High Efficiency, Step-Down Controller for AMD Opteron? CPUs
LTC3719是Linear公司的一款数字可编程的降压型稳压器产品，LTC3719是2-Phase, High Efficiency, Step-Down Controller for AMD Opteron? CPUs，本站介绍了LTC3719的封装应用图解、特点和优点、功能等，并给出了与LTC3719相关的凌力尔特元器件型号供参考。
LTC3719 - 2-Phase, High Efficiency, Step-Down Controller for AMD Opteron? CPUs
LTC3719 - 2-Phase, High Efficiency, Step-Down Controller for AMD Opteron? CPUs - Linear Technology（凌力尔特）
功能描述
The LTC3719 is a 2-phase, VID programmable, synchronous step-down switching regulator controller that drives two N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The 2-phase technique effectively multiplies the fundamental frequency by two, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified.
An operating mode select pin (FCB) can be used to select among three modes including Burst Mode operation for highest efficiency. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required in high current applications.
The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values.
特点
Output Stages Operate Antiphase Reducing Input and Output Capacitance Requirements and Power Supply Induced Noise Dual Input Supply Capability for Load Sharing 5-Bit AMD CPU VID Code:?? VOUT = 0.8V to 1.55V ±1% Output Voltage Accuracy True Remote Sensing Differential Amplifier Power Good Output Voltage Monitor Supports Active Voltage Positioning Current Mode Control Ensures Current Sharing OPTI-LOOP Compensation Minimizes COUT Three Operational Modes: PWM, Burst and Cycle Skip Programmable Fixed Frequency: 150kHz to 300kHz Wide VIN Range: 4V to 36V Operation Adjustable Soft-Start Current Ramping Internal Current Foldback and Short-Circuit Shutdown Overvoltage Soft Latch Eliminates Nuisance Trips Available in 36-Lead Narrow (0.209) SSOP Package应用
Servers and Workstations以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC3719EG | SSOP-24 | E | $5.15 | $4.35 |
| LTC3719EG#PBF | SSOP-24 | E | $5.15 | $4.35 |
| LTC3719EG#TR | SSOP-24 | E | | $4.45 |
| LTC3719EG#TRPBF | SSOP-24 | E | | $4.45 |
下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
LT3840 - 具准确电流限制的宽输入范围、同步稳压控制器LT3791 - 60V、四开关、同步降压-升压型 LED 驱动器控制器LT8705 - 80V VIN 和 VOUT 同步、四开关、降压-升压型 DC/DC 控制器LTC3733 - 用于 AMD CPU 的三相、降压型控制器LT3791-1 - 60V、四开关、同步降压-升压型控制器LTM4609 - 36VIN、34VOUT、高效率、降压-升压型 DC/DC uModule 稳压器LTC3819 - 2-Phase, High Efficiency, Step-Down Controller for Sun Server CPUsLTC3730 - 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck ControllerLTC1709 - 2-Phase, 5-Bit Adjustable,High Efficiency, Synchronous Step-Down Switching RegulatorLTC4000 - 用于电池充电和电源管理的高电压、大电流控制器
下面可能是您感兴趣的Linear公司数字可编程的降压型稳压器元器件
LT1004IZ-1.2 - LT1004IZ-1.2是微功率电压基准LTC6421-20 - LTC6421-20是双通道匹配 1.3GHz 差分放大器/ADC 驱动器LTC3721-1 - LTC3721-1是Push-Pull PWM ControllerLTC1344 - LTC1344是Software SelectableCable TerminatorLTC1427-50 - LTC1427-50是Micropower, 10-Bit Current Output DAC with SMBus Serial InterfaceLTC4090-3 - LTC4090-3是具有 2A 高电压 Bat-Track 降压稳压器的 USB 电源管理器LTC4210-2 - LTC4210-2是采用 6 引脚 SOT-23 封装的热插拔控制器LTC6430A-20 - LTC6430A-20是高线性度、差分 RF / IF 放大器 / ADC 驱动器LTZ1000ACH - LTZ1000ACH是超精准型基准LTC4267-3 - LTC4267-3是具集成型开关稳压器的以太网供电 IEEE 802.3af PD 接口
