參數(shù)資料
型號(hào): LTC1695
廠商: Linear Technology Corporation
英文描述: SMBus/I 2 C Fan Speed Controller in SOT-23(SMBus/I 2 C 風(fēng)扇速度控制器(SOT-23封裝))
中文描述: 的SMBus /的I 2 C風(fēng)扇調(diào)速器采用SOT - 23(的SMBus /的I 2 C風(fēng)扇速度控制器(采用SOT - 23封裝))
文件頁(yè)數(shù): 1/20頁(yè)
文件大?。?/td> 204K
代理商: LTC1695
LTC1695
1
FEATURES
APPLICATIU
DESCRIPTIOU
TYPICAL APPLICATIO
N
U
The LTC
1695 fan speed controller provides all the func-
tions necessary for a power management microprocessor
to regulate the speed of a 5V brushless DC fan via a 2-wire
SMBus/I
2
C 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/I
2
C 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.
I
Notebook Computers
I
Spot Cooling
I
Portable Instruments
I
Battery-Powered Systems
I
DC Motor Control
I
White LED Power Supplies
I
Programmable Low Dropout Regulator
I
Complete SMBus/I
2
C
TM
Brushless DC Fan Speed
Control System in a 5-Pin SOT-23 package
I
0.75
PMOS Linear Regulator with 180mA
Output Current Rating
I
0V to 4.922V Output Voltage Range Controlled by a
6-Bit DAC
I
Simple 2-Wire SMBus/I
2
C Interface
I
250ms Internal Timer Ensures Fan Start-Up
I
Current Limit and Thermal Shutdown
I
Fault Status Indication via SMBus Host Readback
SMBus/I
2
C Fan Speed
Controller in SOT-23
LTC1695
1
5
2
3
4
V
CC
GND
SCL
V
OUT
SDA
+
SYSTEM
CONTROLLER
+
4.7
μ
F
10
μ
F
5V DC FAN
SUNON
KDE0502PFB2-8
0.6W, 1.7 CFM
(25 25 10)mm
3
5V
1695 TA01
Fan Voltage and Current vs DAC Code
DAC CODE
0
L
O
120
100
80
60
40
20
0
6
5
4
3
2
1
0
30
50
1695 TA02
10
20
40
60
70
V
CC
= 5V
T
A
= 25
°
C
I
LOAD
V
OUT
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
2
C is a trademark of Philips Electronics N.V.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1695CS5#PBF 制造商:Linear Technology 功能描述:DP-Other, CUT TAPE SMBus Fan Speed Controller
LTC1695CS5#TR 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器,驅(qū)動(dòng)器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:DC 電機(jī)控制器,無(wú)刷(BLDC),3 相 評(píng)估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負(fù)載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-VQFN(7x7) 包裝:剪切帶 (CT) 其它名稱(chēng):ATA6833-PLQWCT
LTC1695CS5#TRM 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器,驅(qū)動(dòng)器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:DC 電機(jī)控制器,無(wú)刷(BLDC),3 相 評(píng)估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負(fù)載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-VQFN(7x7) 包裝:剪切帶 (CT) 其它名稱(chēng):ATA6833-PLQWCT
LTC1695CS5#TRMPBF 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器,驅(qū)動(dòng)器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:DC 電機(jī)控制器,無(wú)刷(BLDC),3 相 評(píng)估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負(fù)載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-VQFN(7x7) 包裝:剪切帶 (CT) 其它名稱(chēng):ATA6833-PLQWCT
LTC1695CS5#TRPBF 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器,驅(qū)動(dòng)器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:DC 電機(jī)控制器,無(wú)刷(BLDC),3 相 評(píng)估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負(fù)載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-VQFN(7x7) 包裝:剪切帶 (CT) 其它名稱(chēng):ATA6833-PLQWCT