參數(shù)資料
型號： L6221AS
廠商： 意法半導(dǎo)體
英文描述： QUAD DARLINGTON SWITCH
中文描述： 四達(dá)林頓開關(guān)
文件頁數(shù)： 9/15頁
文件大?。?/td> 1083K
代理商： L6221AS
Figure 19 :
Driver for Solenoids up to 3A
.
Some care must be taken to ensure that the collec-
tors are placed close together to avoid different cur-
rent partitioning at turn-off.
We suggest to put in parallel channel 1 and 4 and
channel 2 and 3 as shown in figure 19 for the similar
electrical characteristics of the logic section (turn-on
and turn-off delay time) and the power stages (col-
lector saturation voltage, free-wheeling diode for-
ward voltage).
APPLICATION INFORMATION
When inductive loads are driven by L6221A/N, a
zener diode in series with the integral free-wheeling
diodes increases the voltage across which energy
stored in the load is discharged and therefore
speeds the current decay (fig. 18).
For reliability it is suggested that the zener is chosen
so that V
p
+ V
z
< 35 V.
The reasons for this are two fold :
1) The zener voltage changes in temperature and
current.
2) The instantaneous power must be limited to avoid
the reverse second breakdown.
Figure 18.
L6221AS - L6221AD - L6221N
9/15
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L6221C 制造商:STMicroelectronics 功能描述:3.2 A 4 CHANNEL, AND GATE BASED PRPHL DRVR, PDIP16
L6221C_03 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD DARLINGTON SWITCH
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L6221CD013TR 功能描述:達(dá)林頓晶體管 1.8 Amp Quad Switch RoHS:否 制造商:Texas Instruments 配置:Octal 晶體管極性:NPN 集電極—發(fā)射極最大電壓 VCEO:50 V 發(fā)射極 - 基極電壓 VEBO: 集電極—基極電壓 VCBO: 最大直流電集電極電流:0.5 A 最大集電極截止電流: 功率耗散: 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-18 封裝:Reel
L6221CN 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD DARLINGTON SWITCH
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