- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383253 > L9346 (意法半導(dǎo)體) QUAD INTELLIGENT POWER LOW SIDE SWITCH PDF資料下載
參數(shù)資料
| 型號： | L9346 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| 中文描述： | 四智能電源開關(guān)偏低 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 96K |
| 代理商： | L9346 |
CIRCUIT DESCRIPTION
The L9346 is a quad low side driver for inductive
loads like valves in automotive environment. The
internal pull down current sources
ABLE and INPUT pins assure in case of open in-
put conditions that the device is switched off. An
output voltage slope limitation for du/dt is imple-
mented to reduce the EMI. An integrated active
flyback voltage limitation clamps the output volt-
age duringthe flybackphase to 50 V.
Each driver is protected against short circuit at
V
OUT
< 32V and thermal overload. In short circuit
condition the output will be disabled after a short
delay time t
DOL
. The thermal disable for TJ >
180
°
C of the output will be reseted if the junction
temperaturedecreasesabout 20
°
Cbelow the dis-
able thresholdtemperature.
TheovertemperatureinformationisstoreduntilIN=L.
For the real time error diagnosis the voltage and
the current of the outputs are compared with in-
ternal fixed values V
OUV
for OFF and I
OUC
for ON
conditions to recognize open load (R
L
≥
20 K
,
R
L
> 38
) in OFFand ON conditions.
Also the output voltages V
O1
- 4 are compared to
each other output in OFF condition with a fixed
at the EN-
offset of
V
OUV
to recognize load bypasses. To
suppress the
V
OUV
diagnoses during the flyback
phases of the comparedoutput, the
VOUVdiag-
nostic includesa latch function.
Reaching the flyback clamping voltage V
OCL
the
diagnostic signal is reseted by a latch. To activate
again this kind of diagnostic a low signal at the
correspondent INPUT or the ENABLE pin must
be applied (see also Fig.3). The outputs 1 and 4
are comparedfor
V
OUV
and also outputs2 and 3
are compared.
The diagnosticoutput level in connection with dif-
ferent ENABLE and INPUT conditions allows to
recognize different fail states,like overtemp,short
to V
SS
, short to GND, bypass to GND and
connectedload (see diagnostictable).
The diagnosticoutput is protected against short
circuit. Exceeding the over load current threshold
I
OOC
, the output current will be limited internally
during the diagnostic overload delay switch-off
time t
DOL
.
The device complies the ISO pulses imposed to
the supply voltage of the valves without any fail-
ures of the functionality.
dis-
5V
t
t
5V
t
5A
3A
IN
V
IO
IOOL
IOUC
D
V
tDOL
Figure 3. Diagnostic OverloadDelay Time
L9346
8/13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L9346DIE | QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| L9346PD | CAP CER 820PF 3.15KVDC R3 RAD |
| L9347 | INTELLIGENT QUAD 2X5A/2X2.5A LOW-SIDE SWITCH |
| L9347PD | CAP CER 150PF 3.15KVDC R3 RAD |
| L9347DIE1 | INTELLIGENT QUAD 2X5A/2X2.5A LOW-SIDE SWITCH |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9346DIE | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| L9346PD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| L9347 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:INTELLIGENT QUAD 2X5A/2X2.5A LOW-SIDE SWITCH |
| L9347DIE1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:INTELLIGENT QUAD 2X5A/2X2.5A LOW-SIDE SWITCH |
| L9347LF | 功能描述:電源開關(guān) IC - 配電 Intelligent Quad 2x5A/2x2.5A 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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。