LTC3730 - LTC3730是3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller
LTC3730是Linear公司的一款数字可编程的降压型稳压器产品，LTC3730是3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller，本站介绍了LTC3730的封装应用图解、特点和优点、功能等，并给出了与LTC3730相关的凌力尔特元器件型号供参考。
LTC3730 - 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller
LTC3730 - 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller - Linear Technology（凌力尔特）
功能描述
The LTC3730 is a PolyPhase synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 600kHz per phase to minimize the RMS losses in both the input and output filter capacitors. The 3-phase technique effectively triples the fundamental frequency, improving transient response while operating each controller at an optimal frequency for efficiency and ease of thermal design. Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode technology.
An internal operational amplifier provides mode selectable output voltage programming in conjunction with the internal VID voltage control DAC.
Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. Current foldback provides protection for the external MOSFETs under short-circuit or overload conditions.
特点
3-Phase Current Mode Controller with Onboard MOSFET Drivers ±5% Output Current Match Optimizes Thermal Performance and Size of Inductors and MOSFETs Operational Amplifier Accomodates Mode Switching ±1% VREF Accuracy Over Temperature Reduced Input and Output Capacitance Reduced Power Supply Induced Noise VOUT Programmable from 0.6V to 1.75V (IMVP III) ±10% Power Good Output Indicator 250kHz to 600kHz Per Phase, PLL, Fixed Frequency PWM, Stage Shedding™ or Burst Mode Operation OPTI-LOOP Compensation Minimizes COUT Adjustable Soft-Start Current Ramping 4V, VIN,Undervoltage RUN/SS Reset/Reattempt Circuit Short-Circuit Shutdown Timer with Defeat Option Overvoltage Soft Latch Small 36-Lead Narrow (0.209”) SSOP Package应用
Tablet Computers High Performance Notebook Computers High Output Current DC/DC Power Supplies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) |
| LTC3730CG | SSOP-24 | C | $6.25 | $4.35 |
| LTC3730CG#PBF | SSOP-24 | C | $6.25 | $4.35 |
| LTC3730CG#TR | SSOP-24 | C | | $4.45 |
| LTC3730CG#TRPBF | SSOP-24 | C | | $4.45 |
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