- 您現(xiàn)在的位置：買賣IC網 > PDF目錄370147 > FAN8039D3 Servo/Spindle Motor Controller/Driver PDF資料下載
參數(shù)資料
| 型號： | FAN8039D3 |
| 英文描述： | Servo/Spindle Motor Controller/Driver |
| 中文描述： | 伺服/主軸電機控制器/驅動器 |
| 文件頁數(shù)： | 5/191頁 |
| 文件大?。?/td> | 2018K |
| 代理商： | FAN8039D3 |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁
FAN1084
PRODUCT SPECIFICATION
4
P
Applications Information
General
The FAN1084 and FAN1084-1.5 are three-terminal regula-
tors optimized for GTL+ V
TT
termination and logic applica-
tions. These devices are short-circuit protected, and offer
thermal shutdown to turn off the regulator when the junction
temperature exceeds about 150°C. The FAN1084 series pro-
vides low dropout voltage and fast transient response. Fre-
quency compensation uses capacitors with low ESR while
still maintaining stability. This is critical in addressing the
needs of low voltage high speed microprocessor buses like
GTL+.
Stability
The FAN1084 series requires an output capacitor as a part of
the frequency compensation. It is recommended to use a 22μF
solid tantalum or a 100μF aluminum electrolytic on the output
to ensure stability. The frequency compensation of these devices
optimizes the frequency response with low ESR capacitors.
In general, it is suggested to use capacitors with an ESR of
<1
. It is also recommended to use bypass capacitors such
as a 22μF tantalum or a 100μF aluminum on the adjust pin of
the FAN1084 for low ripple and fast transient response.
When these bypassing capacitors are not used at the adjust
pin, smaller values of output capacitors provide equally good
results.
Protection Diodes
In normal operation, the FAN1084 series does not require
any protection diodes. For the FAN1084, internal resistors
limit internal current paths on the adjust pin. Therefore, even
with bypass capacitors on the adjust pin, no protection diode
is needed to ensure device safety under short-circuit condi-
tions.
A protection diode between the input and output pins is usu-
ally not needed. An internal diode between the input and the
output pins on the FAN1084 series can handle microsecond
surge currents of 50A to 100A. Even with large value output
capacitors it is difficult to obtain those values of surge cur-
rents in normal operation. Only with large values of output
capacitance, such as 1000
μ
F to 5000
μ
F, and with the input
pin instantaneously shorted to ground can damage occur. A
crowbar circuit at the input can generate those levels of cur-
rent; a diode from output to input is then recommended, as
shown in Figure 2. Usually, normal power supply cycling or
system “hot plugging and unplugging” will not generate cur-
rent large enough to do any damage.
The adjust pin can be driven on a transient basis ±7V with
respect to the ouput, without any device degradation. As with
any IC regulator, exceeding the maximum input-to-output
voltage differential causes the internal transistors to break
down and none of the protection circuitry is then functional.
Figure 2. Optional Protection
Ripple Rejection
In applications that require improved ripple rejection, a bypass
capacitor from the adjust pin of the FAN1084 to ground
reduces the output ripple by the ratio of V
OUT
/1.25V. The
impedance of the adjust pin capacitor at the ripple frequency
should be less than the value of R1 (typically in the range of
100
to 120
) in the feedback divider network in Figure 2.
Therefore, the value of the required adjust pin capacitor is a
function of the input ripple frequency. For example, if R1
equals 100
adjust pin
capacitor should be 22μF. At 10kHz, only 0.22μF is needed.
Output Voltage
The FAN1084 regulator develops a 1.25V reference voltage
between the ouput pin and the adjust pin (see Figure 3). Placing
a resistor R1 between these two terminals causes a constant
current to flow through R1 and down through R2 to set the
overall output voltage. Normally, this current is the specified
minimum load current of 10mA.
FAN1084
ADJ
C2
22
μ
F
V
OUT
+
C1
10
μ
F
+
+
IN
OUT
D1
1N4002
(OPTIONAL)
V
IN
FAN1084-1.5
IN
GND
C2
22
μ
F
V
OUT
+
C1
10
μ
F
+
OUT
D1
1N4002
(OPTIONAL)
V
IN
R1
R2
C
ADJ
相關PDF資料 |
PDF描述 |
|---|---|
| FAN8800 | |
| FAN6555M | SMPS Controller |
| FAN6555MX | SMPS Controller |
| FAN7000DTF | Dual Audio Amplifier |
| FAN73832 | Half-Bridge Gate-Drive IC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8040 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
| FAN8040G3 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
| FAN8040G3X | 功能描述:IC MOTOR DRIVER 4CH 28SSOPH-375 RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風扇控制器，驅動器 系列:- 標準包裝:1 系列:- 應用:直流電機驅動器，步進電機驅動器 評估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應商設備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| FAN8042 | 功能描述:馬達/運動/點火控制器和驅動器 RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8045G3 | 功能描述:馬達/運動/點火控制器和驅動器 4Ch Motor Drive IC 5 Input RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。