LTC3711 - LTC3711是5-Bit Adjustable, Wide Operating Range, No RSENSE? Step-Down Controller
LTC3711是Linear公司的一款数字可编程的降压型稳压器产品，LTC3711是5-Bit Adjustable, Wide Operating Range, No RSENSE? Step-Down Controller，本站介绍了LTC3711的封装应用图解、特点和优点、功能等，并给出了与LTC3711相关的凌力尔特元器件型号供参考。
LTC3711 - 5-Bit Adjustable, Wide Operating Range, No RSENSE? Step-Down Controller
LTC3711 - 5-Bit Adjustable, Wide Operating Range, No RSENSE? Step-Down Controller - Linear Technology（凌力尔特）
功能描述
The LTC3711 is a synchronous step-down switching regulator controller for CPU power. An output voltage between 0.925V and 2.000V is selected by a 5-bit code (Intel mobile VID specification). The controller uses a 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 VIN and 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 operation when the main output is lightly loaded.
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.
特点
5-Bit Programmable Output Voltage: 0.925V to 2V No Sense Resistor Required True Current Mode Control 2% to 90% Duty Cycle at 200kHz tON(MIN) < 100ns Supports Active Voltage Positioning Extremely Fast Transient Response Stable with Ceramic COUT Dual N-Channel MOSFET Synchronous Drive Power Good Output Voltage Monitor Wide VIN Range: 4V to 36V ±1% 0.8V Reference Adjustable Current Limit Adjustable Switching Frequency Programmable Soft-Start Output Overvoltage Protection Optional Short-Circuit Shutdown Timer Micropower Shutdown: IQ < 30μA Available in 24-Lead Narrow SSOP Package应用
Power Supplies for Mobile Pentium? Processors Notebook and Palmtop Computers, PDAs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) |
| LTC3711EGN | SSOP-24 | E | $4.14 | $3.50 |
| LTC3711EGN#PBF | SSOP-24 | E | $4.14 | $3.50 |
| LTC3711EGN#TR | SSOP-24 | E | | $3.60 |
| LTC3711EGN#TRPBF | SSOP-24 | E | | $3.60 |
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