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參數(shù)資料
| 型號： | L9909 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | DC MOTOR DRIVER WITH POSITION CONTROL |
| 中文描述： | 直流電動機(jī)驅(qū)動器，帶有位置控制 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 72K |
| 代理商： | L9909 |
Over CurrentProtection.
The driver output pins (M+ and M-) are over cur-
rent protected by 4 separate linear current limit-
ers, one for each of the 4 power output transis-
tors. The output drivers resume normal operation
as soonas the over current is removed.
MotorOver Voltage Protection.
The motor is over voltage protected by switching
off (to Hi-Z) the M+ and M- output drivers, when
Vcc rises above the 19V typ. over voltage shut
down threshold.
Over TemperatureProtection.
The chip is over temperature protected by switch-
ing off (to Hi-Z) the M+ and M-outputdrivers.
Power Supply TransientProtections.
The device provides over voltage suppression for
fast Vcc voltage transients (Fig. 5). The Vcc is
clamped at typ. 70V by turningon all four, bridge
connected, power output transistors. They are
roughly subjected to equal currents and voltages
for even transientenergy distribution.
The over voltage suppression is deactivated for
slow Vcc voltage transients (Fig. 4) by raising the
Vcc voltageclamp at typ. 80V.
M
M+
M-
-
-
+
+
OSCILLATOR
U709
Rosc
27K
Cosc
10nF
1nF
1nF
GND
COSC
ROSC
VCOM
VFB
1K
1K
EMI
Protection
Network
100nF
DC
MOTOR
C
P
VCC
Reverse Battery
Protection Diode
GROUND
POWER
F
P
100nF
1nF
V
E
Figure 6.
Recommended ApplicationDiagram for Positive Control
M
M+
M-
-
-
+
+
OSCILLATOR
U709
Rosc
27K
Cosc
10nF
1nF
1nF
GND
COSC
ROSC
VCOM
VFB
10K
20K
EMI
Protection
Capacitors
100nF
DC
MOTOR
VCC
Reverse Battery
Protection Diode
GROUND
POWER
100nF
1nF
DIR
20K
Protection
Resistor
DIR
Threshold
Voltage
Figure 7.
Recommended ApplicationDiagram for Direction Control
L9909
6/9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9911 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR |
| L9911A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR |
| L9911B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR |
| L9911F | 功能描述:低壓差穩(wěn)壓器 - LDO Car Alternator Reg Multifunction Volt RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L9911I | 功能描述:低壓差穩(wěn)壓器 - LDO Car Alternator Reg Multifunction Volt RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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