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參數(shù)資料
| 型號： | ISL8705IBZT |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字信號處理外設 |
| 英文描述： | DSP-ADDRESS SEQUENCER, PDSO14 |
| 封裝： | PLASTIC, MS-012AB, SOIC-14 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 351K |
| 代理商： | ISL8705IBZT |
10
FN9250.0
March 14, 2006
Application Concerns and Recommendations
Best practices VIN decoupling is required, a 1F capacitor is
recommended.
Coupling from the ENABLE_X pins to the sensitive UV and
OV pins can cause false OV/UV events to be detected. This
is most relevant for ISL8700, ISL8702, ISL8704 parts due to
the ENABLEA and OV pins being adjacent. This coupling
can be reduced by adding a ground trace between UV and
the ENABLE/FAULT signals, as shown in Figure 15. The
PCB traces on OV and UV should be kept as small as
practical and the ENABLE_X and FAULT traces should
ideally not be routed under/over the OV/UV traces on
different PCB layers unless there is a ground or power plane
in between. Other methods that can be used to eliminate this
issue are by reducing the value of the resistors in the
network connected to UV and OV (R2, R3, R5 in Figure 16)
or by adding small decoupling capacitors to OV and UV (C2
and C7 in Figure 16). Both these methods act to reduce the
AC impedance at the nodes, although the latter method acts
to filter the signals which will also cause an increase in the
time that a UV/OV fault takes to be detected
.
When the ISL870X is implemented on a hot swappable card
that is plugged into an always powered passive back plane
an RC filter is required on the VIN pin to prevent a high dv/dt
transient. With the already existing 1
F decoupling capacitor
the addition of a small series R (>50
) to provide a time
constant >50
s is all that is necessary.
Only the ISL8702 has a VIN limitation of 14V maximum.
FIGURE 14. OV & UV TRANSIENT IMMUNITY
8s/DIV
FAULT = LOW
VMONITOR OV
VMONITOR UV
FIGURE 15. LAYOUT DETAIL OF GND BETWEEN PINS 4 & 5
PIN 4
PIN 5
GND
ISL8700, ISL8701, ISL8702, ISL8703, ISL8704, ISL8705
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL870XEVAL1 | 功能描述:EVAL BOARD 1 FOR ISL870X RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:* 標準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| ISL8723EVAL1 | 功能描述:EVAL BOARD 1 FOR ISL8723 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:* 標準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| ISL8723IRZ | 功能描述:IC POWER SUPPLY SEQUENCER 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ISL8723IRZR5369 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL8723IRZ-T | 功能描述:IC POWER SUPPLY SEQUENCER 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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