- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371028 > MC33293ATV (MOTOROLA INC) QUAD LOW SIDE SWITCH PDF資料下載
參數(shù)資料
| 型號： | MC33293ATV |
| 廠商： | MOTOROLA INC |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | QUAD LOW SIDE SWITCH |
| 中文描述： | 3 A 4 CHANNEL, BUF OR INV BASED PRPHL DRVR, PZFM15 |
| 封裝： | PLASTIC, SIP-15 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 236K |
| 代理商： | MC33293ATV |
MC33293A
14
MOTOROLA ANALOG IC DEVICE DATA
The factors that determine the value of load resistance
that will cause the onset of current limit are: IDS(limit), Vload,
and RDS(on), as shown below.
Rload(limit) = [Vload / IDS(limit)] – RDS(on)
For the case when: Vload = 14 V
VOC(limit) = 3.7 V
RDS(on) = 0.3
IDS(limit) = 4.0 A
an over-current condition will be detected for any load
resistance such that Rload
≤
2.6
. An undetected current
limit condition will occur any time 2.6
≤
Rload
≤
3.2
. Notice
that the undetected current limit range is quite small.
(13)
Fault Interrogation
Even though the MC33293A incorporates a single Fault
Status Output pin for reporting three different fault conditions,
a real time interrogation routine can be used to determine
which one of the three Fault conditions is being reported and
which single output is affected.
An important point to note about Fault interrogation is that
only one fault on a single output can be interpreted.In other
woRDS, if more than one over-current or open-load Fault
exists among the four outputs, it is notpossible to distinguish
which outputs have a fault and which do not. It is very
unlikely, however, that more than one output will be faulted at
the same time.
When a Fault is reported, the first step is to determine if it
is an over-current or open-load Fault (Rload
≥
447 k
,
typical). This is done by taking all the inputs (single or dual) to
a logic low state. If the Fault Status resets (changes to a
logic high state) after the Fault Status Reset Delay Time
(ts(reset), see Figure 4) has lapsed, then an over-current Fault
is being reported. If the Fault Status does not reset (remains
at a logic low state) after ts(reset) has lapsed, then an
open-load Fault (Rload
≥
447 k
, typical) is being reported.
This type of interrogation is possible because an output-off
open-load Fault can only be reported when all the inputs are
in a logic low state.
For an over-current Fault, the next step is to determine
which single output is affected. After all inputs are turned
OFF and the fault status resets, each input is then turned ON
then OFF sequentially. A Fault will again be reported when
the input to the corresponding Over-Current output is turned
ON and tos(on) has lapsed. If the dual input mode is being
used, an over-current Fault can only be interrogated down to
the two outputs being driven together.
For an open-load Fault (Rload
≥
447 k
, typical)
interrogation, all inputs are turned OFF and the fault status
remains set. Each input is then turned ON and OFF
sequentially. The Fault status will remain set when the input
to the corresponding faulted output is turned ON and tos(on)
has lapsed. If the dual input mode is used, an open-load Fault
can only be interrogated down to the two outputs driven
together.
From the example following Equation
1, the typical value
of Ropen(on) is 187
. From the example following Equation
6, the typical value of Ropen(off) is 447 k
. Therefore, if the
load resistance is between 187
and 447 k
typically, an
output-on open-load Fault will be reported at the Fault Status
output but an output-off open-load Fault will not. This
condition is referred to as a soft open fault If a soft open fault
exists, it is reported at the Fault Status output the same as an
over-current Fault except for the reporting delay time. A soft
open fault has a reporting delay time of 2.2 ms typically, and
an over-current Fault has a reporting delay time of only 55
μ
s
typically, after the input to the faulted output is turned ON.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC33298P | OCTAL SERIAL SWITCH (SPI Input/Output) |
| MC33298DW | OCTAL SERIAL SWITCH (SPI Input/Output) |
| MC33318DW | Voice switched Speakerphone circuit Bipolar analog |
| MC33318P | Voice switched Speakerphone circuit Bipolar analog |
| MC33341 | Power Supply Battery Charger Regulation Control Circuit(應(yīng)用于電源和電池充電器的穩(wěn)壓控制電路) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC33294 | 制造商:SPC Multicomp 功能描述:CLIP 002 制造商:SPC Multicomp 功能描述:CLIP; Fixing Type:Clip; For Use With:Heat Sinks (MC33272, MC33274); External Length:37.1mm; External Width:7.54mm; Clip Style:Mounting Clip; Length:37.1mm; Overall Length:37.1mm ;RoHS Compliant: Yes |
| MC33295 | 制造商:SPC Multicomp 功能描述:CLIP 003 制造商:SPC Multicomp 功能描述:CLIP; Fixing Type:Clip; For Use With:Heat Sinks (MC33268, MC33269, MC33270, MC33271); External Length:16mm; External Width:3.5mm; Clip Style:Mounting Clip; Length:16mm; Overall Length:16mm ;RoHS Compliant: Yes |
| MC33296 | 制造商:SPC Multicomp 功能描述:CLIP 004 制造商:SPC Multicomp 功能描述:CLIP; Fixing Type:Clip; For Use With:Heat Sinks (MC33263, MC33264); External Length:37.3mm; Clip Style:Mounting Clip; Length:37.3mm; Overall Length:37.3mm ;RoHS Compliant: Yes |
| MC33297 | 制造商:SPC Multicomp 功能描述:CLIP 005 制造商:SPC Multicomp 功能描述:CLIP; Fixing Type:Clip; For Use With:Heat Sinks (MC33265, MC33266, MC33267); External Length:43.8mm; Clip Style:Mounting Clip; Length:43.8mm; Overall Length:43.8mm ;RoHS Compliant: Yes |
| MC33298DW | 功能描述:IC SWITCH SERIAL OCTAL 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 內(nèi)部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:高端/低端驅(qū)動器 輸入類型:SPI 輸出數(shù):8 導(dǎo)通狀態(tài)電阻:850 毫歐，1.6 歐姆 電流 - 輸出 / 通道:205mA，410mA 電流 - 峰值輸出:500mA，1A 電源電壓:9 V ~ 16 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:PG-DSO-20-45 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。