LTC3831-1 - LTC3831-1是High Power Synchronous Switching Regulator Controller for DDR Memory Termination

LTC3831-1是LINEAR凌力尔特公司的一款DDR 存储器 / 总线终端产品，LTC3831-1是LTC3831-1是High Power Synchronous Switching Regulator Controller for DDR Memory Termination，本站介绍了LTC3831-1的封装应用图解、特点和优点、功能等，并给出了与LTC3831-1相关的LINEAR元器件型号供参考。

LTC3831-1 - LTC3831-1是High Power Synchronous Switching Regulator Controller for DDR Memory Termination - DDR 存储器 / 总线终端 - 电源管理 - 凌力尔特

LTC3831-1 - High Power Synchronous Switching Regulator Controller for DDR Memory Termination

LTC3831-1 - High Power Synchronous Switching Regulator Controller for DDR Memory Termination - Linear Technology（凌力尔特）

功能描述

The LTC3831-1 is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831-1 generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831-1 uses a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor.

The LTC3831-1 operates with input supply voltage as low as 3V and with a maximum duty cycle of >91%. It includes a fixed frequency PWM oscillator for low output ripple operation. The 300kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to above 500kHz. In shutdown mode, the LTC3831-1 supply current drops to <10µA.

特点

VOUT as Low as 0.4V

High Power Switching Regulator Controller for DDR Memory Termination

VOUT Tracks 1/2 of VIN or External VREF

No Current Sense Resistor Required

Low VCC Supply: 3V to 8V

Maximum Duty Cycle > 91% Over Temperature

Drives All N-Channel External MOSFETs

High Efficiency: Up to 95%

Programmable Fixed Frequency Operation:100kHz to 500kHz

External Clock Synchronization Operation

Programmable Soft-Start