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參數(shù)資料
| 型號： | L9349 |
| 廠商： | 意法半導體 |
| 英文描述： | CAP CER 180PF 3.15KVDC R3 RAD |
| 中文描述： | 四智能電源開關(guān)偏低 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 285K |
| 代理商： | L9349 |
L9349
6/12
DIAGNOSTIC TABLE
CIRCUIT DESCRIPTION
The L9349 is a quad low side driver for inductive loads like valves in automotive environment. The internal pull
down current sources at the ENable and INput pins assure in case of open input conditions that the device is
switched off. An output voltage slope limitation for du/dt is implemented to reduce the EMI. An integrated active
flyback voltage limitation clamps the output voltage during the flyback phase 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 T
J
> 180°C of the output will be
reset if the junction temperature decreases about 20°C below the disable threshold temperature.
The overtemperature, overload and groundloss information is stored until IN is low.
For the real time error diagnosis the voltage and the current of the outputs are compared with internal fixed val-
ues V
OUV
for OFF and I
OUC
for ON conditions to recognize open load (R
L
≥
20K
, R
L
> 38
) in OFF and ON
conditions.
Also the output voltages V
O1
- 4
are compared to each other output in OFF condition with a fixed offset of
V
OUV
to recognize load bypasses. The
V
OUV
diagnoses is suppressed during the flyback phases of the compared
output. The outputs 1 and 4 are compared for
V
OUV
and also outputs 2 and 3 are compared.
The diagnostic output level in connection with different ENable and INput conditions allows to recognize differ-
ent fail states, like overtemp, short to V
S
, short to GND, bypass to GND and disconnected load (see diagnostic
table).
The diagnostic output is protected against short circuit. Exceeding the over load current threshold I
OOC
, the out-
put current will be limited internally during the diagnostic overload delay switch-off time t
DOL
.
The device complies the I
SO
pulses imposed to the supply voltage of the valves without any failures of the func-
tionality. Therefore some diagnostic functions are internal filtered. The following table shows the corresponding
filter time for each detected signal.
Conditions
Normal Function
EN
L
H
H
L
IN
X
L
H
X
OUT
off
off
on
off
DIAG.
L
L
H
H
GND short
V
Otyp
< 0.55VS
V
O1-4/2-3
≥
1.25V
I
O1,2,3,4typ
< 320mA
Load bypass
H
L
off
H
Open Load
H
H
on
L
T
jtyp
≥
190°C Overtemperature
Over Load
X
X
off
L
I
Omin 1,2
> 5A
I
Omin 3,4
> 3A
channel off
channel on
H
H
off
L
SGND or PGND loss
SGND or PGND loss
X
H
L
H
off
off
H
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L9349DIE1 | QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| L9351 | High Side Driver(高邊驅(qū)動器) |
| L9352B-DIE1 | INTELLIGENT QUAD (2X5A/2X2.5A) LOW-SIDE SWITCH |
| L9352B | CHOKE, COM/ASYM MODE 2X1.1MH 2A |
| L9352 | CAP CER 1800PF 3.15KVDC R3 RAD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9349DIE1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INTELLIGENT POWER LOW SIDE SWITCH |
| L9349-LF | 功能描述:電源開關(guān) IC - 配電 Quad intelligent Power 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 |
| L9349TR-LF | 功能描述:電源開關(guān) IC - 配電 Quad intelligent Power 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 |
| L934AD | 功能描述:標準LED-通孔 Amber LED RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強度: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 |
| L934AD/1ID | 制造商:Kingbright Corporation 功能描述: |
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