- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383254 > L9377DIE1 (意法半導(dǎo)體) DUAL INTELLIGENT POWER LOW SIDE SWITCH PDF資料下載
參數(shù)資料
| 型號： | L9377DIE1 |
| 廠商： | 意法半導(dǎo)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)： | 8/9頁 |
| 文件大小： | 69K |
| 代理商： | L9377DIE1 |
CIRCUIT DESCRIPTION
The L9377 is a dual low side driver for inductive
loads like valves in automotive environment. The
device is enabled by a common CMOS compat-
ible ENABLE high signal. The internal pull down
current sources at the ENABLE 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 negative slope 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
threshold temperature.
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
for ON
conditions to recognize open load (R
L
≥
20K
, R
L
> 38
) in ON and OFF conditions. The diagnostic
operates also in the extended supply voltage
range 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 diagnostic output level in connection with dif-
ferent ENABLE and INPUT conditions allows to
recognize different fail states, like overtemp, short
to VSS, short to GND, bypass to GND and dis-
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
.
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
Figure 5:
Application circuit diagram.
L9377
8/9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L9380 | Triple High-Side MOSFET Driver(三高邊MOSFET驅(qū)動器) |
| L9386 | DUAL INTELLIGENT POWER LOW SIDE SWITCH |
| L9386MD | DUAL INTELLIGENT POWER LOW SIDE SWITCH |
| L93PI | Quad Low Side Driver(四路低邊驅(qū)動器) |
| L9407F | CAR ALTERNATOR VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L-937CB/1EGW | 制造商:Kingbright Corporation 功能描述: |
| L-937EB/2YEW | 制造商:Kingbright Corporation 功能描述: |
| L937EGW | 功能描述:標(biāo)準(zhǔn)LED-通孔 RED/GREEN DIFFUSED 2-LEAD RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強(qiáng)度:0.7 mcd 波長/色溫:615 nm 顯示角:45 deg 透鏡顏色/類型:Clear, Non-Diffused 正向電流:70 mA 正向電壓:1.83 V to 3.03 V LED 大小:2 mm 系列: 封裝:Tube |
| L-937EGW | 制造商:Kingbright Corporation 功能描述:LED Bi-Color Green/Red 565nm/627nm 2-Pin T-1 Bulk 制造商:Kingbright Corporation 功能描述:LED 3MM HE-RED/GRN 制造商:Kingbright Corporation 功能描述:LED, 3MM, HE-RED/GRN 制造商:Kingbright Corporation 功能描述:LED, 3MM, HE-RED/GRN; Bulb Size:T-1 (3mm); LED Color:Red / Green; Luminous Intensity / Color:R 20mcd / G 20mcd; Viewing Angle:60; Forward Voltage / Color:R 2V / G 2.2V; Forward Current / Color:R 30mA / G 25mA; Lens Shape:Round ;RoHS Compliant: Yes 制造商:Kingbright Corporation 功能描述:HE red/grn diffused LED,L937EGW 30/25mA |
| L-937EGW | 制造商:Kingbright Corporation 功能描述:LED 3MM HE-RED/GRN |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。