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參數(shù)資料
| 型號： | L9386 |
| 廠商： | 意法半導體 |
| 英文描述： | DUAL INTELLIGENT POWER LOW SIDE SWITCH |
| 中文描述： | 雙智能電源開關(guān)偏低 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 97K |
| 代理商： | L9386 |
CIRCUIT DESCRIPTION
The L9386MD is a dual low side driver for induc-
tive loads like valves in automotive environment.
The device is enabled by a common CMOS com-
patible ENABLE high signal. The internal pull
down current sources at theENABLE and INPUT
pins protect the device in open input conditions
against malfunctions. An output slope limitation
for du/dt is implemented to reduce the EMI. An in-
tegrated active flyback voltage limitation clamps
the output voltage during the flyback phase to
50V.
Each driver is protected against short circuit and
thermal overload. In short circuit condition the
output will be disabled after a short delay time
t
DOL
to suppress spikes. This disable is latched
until a negativeslope occure at the correspondent
input pin. The thermal disable for T
J
> 175
°
C of
the output will be reseted if the junction tempera-
ture decreases about 20
°
C below the disable
thresholdtemperature.
For the real time error diagnosis the voltage and
the current of the outputs are compared with in-
ternal fixed values VO
UV
for OFF and IO
UC
forON
conditions to recognizeopen load (R
L
≥
20K
, R
L
> 38
) in ON and OFF conditions. The diagnostic
Figure 5:
Applicationcircuit diagram.
operates also in the extendedsupply voltagerang
of 4.5V
≤
VS
≤
32V.
Also the output voltages VO
1,2
are compared
against each other in OFF condition with a fixed
offset of
VO
UV 1,2
to recognize GND bypasses.
To suppress mail
VO diagnoses during the fly-
back phases of the compared output, the
VO di-
agnostic includes a latch function. Reaching the
flyback clamping voltage VO
C
the diagnostic sig-
nal is reseted by a latch. To activate again this
kind of diagnostic a low signal at the correspon-
dent INPUT or the ENABLE pin must occur (see
also Fig.3).
The diagnosticoutput level in connectionwith dif-
ferent ENABLE and INPUT conditions allows to
recognizedifferent fail states,like overtemp,short
to VSS, short to GND, bypass to GND and
connected load (see also page 7 diagnostic ta-
ble).
The diagnostic output is also protected against
short to UD
max
. Oversteping the over load current
threshold IO
o
, the output current will be limited in-
ternally during the diagnostic overload delay
switch-off time t
DOL
.
dis-
OUT1
OUT2
VS
ZVALVE
ZVALVE
VBatt
Channel 1
Channel 2
Output
Control
Overtemp
R
Q
S
Delay
Timer
Overload
Openload
GND
DIAG2
IN2
EN
DIAG1
IN1
Controller
+5V
RO
Diagnostic
Control
μ
P
L9386MD
8/10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L9386MD | DUAL INTELLIGENT POWER LOW SIDE SWITCH |
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| L9407F | CAR ALTERNATOR VOLTAGE REGULATOR |
| L9444 | ONE CHIP CAR ALTERNATOR REGULATOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9386_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual intelligent power low side switch |
| L9386MD | 功能描述:電源開關(guān) IC - 配電 VOLTAGE REGULATOR RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| L9386MD-TR | 功能描述:電源開關(guān) IC - 配電 DUAL INTELLIGENT Pwr Lo Side Switch RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| L9389 | 制造商:GILWAY 制造商全稱:Gilway Technical Lamp 功能描述:Miniature Quartz Halogen Lamps |
| L9390 | 制造商:GILWAY 制造商全稱:Gilway Technical Lamp 功能描述:Miniature Quartz Halogen Lamps |
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