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參數(shù)資料
| 型號(hào)： | L6376PD |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 0.5A HIGH-SIDE DRIVER QUAD INTELLIGENT POWER SWITCH |
| 中文描述： | 0.5A的高邊驅(qū)動(dòng)器四智能功率開關(guān) |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 123K |
| 代理商： | L6376PD |
OVERTEMPERATURE PROTECTION (OVT)
If the chip temperatureexceeds
Θ
lim
(measuredin
a centralposition in the chip) the chip deactivates
itself.
The followingactions are taken:
all theoutput stages are switched off;
the signal DIAG is activated(activelow).
Normal operationis resumedas soon as (typically
after some seconds) the chip temperature moni-
tored goes back below
Θ
lim
-
Θ
H
.
The different thresholds with hysteretic behavior
assure that no intermittent conditionscan be gen-
erated.
UNDERVOLTAGE PROTECTION (UV)
The supply voltage is expected to range from
9.5V to 35V, even if its reference value is consid-
ered to be 24V.
In this rangethe deviceoperates correctly.
Below 9.5V the overall system has to be consid-
ered not reliable.
Consequently the supply voltage is monitored
continuously and a signal, called UV, is internally
generated and used.
The signal is “on” as long as the supply voltage
does not reach the upper internal threshold of the
V
s
comparator V
sth
. The UV
above V
sth
.
Once the UV signal has been removed, the sup-
ply voltage must decrease below the lower
threshold (i.e. V
sth
-V
shys
) before it is turned on
again.
signal disappears
The hysteresis V
shys
is provided to prevent inter-
mittent operation of the device at low supply volt-
ages that may have a superimposed ripple
around the averagevalue.
The UV signal switches off the outputs, but has
no effecton the creationof the referencevoltages
for the internal comparators, nor on the continu-
ous operationof the charge-pumpcircuits.
DIAGNOSTIC LOGIC
The situations that are monitored and signalled
with the DIAGoutput pin are:
current limit (OVC) in action;there are 4 indi-
vidual current limiting circuits, one per each
output;they limit the current that can be sunk
from each output, to a typical value of
800mA,equal for all of them;
undervoltage (UV);
overtemperature protection(OVT).
The diagnostic signal is transmitted via an open
drain output (for ease of wired-or connection of
several such signals) and a low level represents
the presenceof at least oneof themonitoredcon-
ditions,mentionedabove.
SHORT CIRCUIT OPERATION
In order to allow normal operation of the other in-
puts when one channel is in short cirtuit, an inno-
vative non dissipativeover current protection(pat-
ent pending)is implementedin the device.
OUTPUT
CURRENT
t
ON
t
ON
t
OFF
t
OFF
Time
t<t
ON
DIAG
(active low)
Time
Short Circuit
Short Circuit
Isc
Iout
D94IN105
Figure 2:
ShortCircuit OperationWaveforms
L6376
7/12
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參數(shù)描述 |
|---|---|
| L6377 | 功能描述:電源開關(guān) IC - 配電 0.5A Intel Power Sw 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(shí)間（最大值）:400 us 關(guān)閉時(shí)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 |
| L6377_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:0.5 A high-side driver quad intelligent power switch |
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| L6377D013TR | 功能描述:電源開關(guān) IC - 配電 0.5A Intel Power Sw 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(shí)間（最大值）:400 us 關(guān)閉時(shí)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 |
| L6380 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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