LTC1695是SMBus/I2C Fan Speed Controller in SOT-23

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LTC1695 - LTC1695是SMBus/I2C Fan Speed Controller in SOT-23

LTC1695是Linear公司的一款扇速控制器产品，LTC1695是SMBus/I2C Fan Speed Controller in SOT-23，本站介绍了LTC1695的封装应用图解、特点和优点、功能等，并给出了与LTC1695相关的凌力尔特元器件型号供参考。

LTC1695 - SMBus/I2C Fan Speed Controller in SOT-23

LTC1695 - SMBus/I2C Fan Speed Controller in SOT-23 - Linear Technology（凌力尔特）

功能描述

The LTC1695 fan speed controller provides all the functions necessary for a power management microprocessor to regulate the speed of a 5V brushless DC fan via a 2-wire SMBus/I²C interface. Fan speed is controlled according to the system’s required temperature profile and permits lower fan power consumption, longer battery run time and lower acoustical generated noise versus systems that only provide simple on-off control for the fan. The LTC1695 incorporates a 180mA low dropout linear regulator, a 2-wire SMBus/I²C interface and a 6-bit DAC. Fan speed is controlled by varying the fan’s terminal voltage through the output voltage of the LTC1695’s linear regulator. The LTC1695’s output voltage is programmed by sending a 6-bit digital code to the LTC1695 DAC via the SMBus. To eliminate fan start-up problems at lower fan voltages, users can enable the LTC1695’s boost start feature that provides the DAC’s full-scale output voltage for 250ms before decreasing to the programmed output voltage. The LTC1695 includes output current limiting and thermal shutdown as well as status monitors that can be read back by the microprocessor during fault conditions. The LTC1695 is available in a 5-lead SOT-23 package.

特点

Complete SMBus/I²C™ Brushless DC Fan SpeedControl System in a 5-Pin SOT-23 package

0.75Ohms PMOS Linear Regulator with 180mAOutput Current Rating

0V to 4.922V Output Voltage Range Controlled by a6-Bit DAC

Simple 2-Wire SMBus/I²C Interface

250ms Internal Timer Ensures Fan Start-Up

Current Limit and Thermal Shutdown

Fault Status Indication via SMBus Host Readback

应用

Notebook Computers

Spot Cooling

Portable Instruments

Battery-Powered Systems

DC Motor Control

White LED Power Supplies

Programmable Low Dropout Regulator

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)
LTC1695CS5	SOT-23	C	$1.81
LTC1695CS5#PBF	SOT-23	C	$1.81
LTC1695CS5#TR	SOT-23	C	$1.81	$1.51
LTC1695CS5#TRM	SOT-23	C	$1.81	$1.53
LTC1695CS5#TRMPBF	SOT-23	C	$1.81	$1.53
LTC1695CS5#TRPBF	SOT-23	C	$1.81	$1.51