ADI LTC3831EGN#PBF

控制器，DDR3V ~ 8V1.27V ~ 4V

Overview

The LTC3831EGN is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831EGN generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831EGN 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 LTC3831EGN 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 200kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to above 500kHz. In shutdown mode, the LTC3831EGN supply current drops to <10µA.

Features

Tube Package
Widely used in Controller, DDR applications
SWITCHING CONTROLLER analog IC

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC3831EGN#PBF Specialized Voltage Regulators applications.

• LCD-TV/PDP-TV
• Copier/Printer
• Set-Top Box
• DDR Vooo and Vπ Voltage Generation
• PC Dual Power Supply
• Server DDR Power
• Desktop Computer
• Graphics Cards
• Cell Phones
• Wireless Modems