- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄383174 > ISL88813IP846Z (INTERSIL CORP) UP Supervisor with Watchdog Timer,Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset PDF資料下載
參數(shù)資料
| 型號(hào)： | ISL88813IP846Z |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | UP Supervisor with Watchdog Timer,Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, DIP-8 |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大小： | 518K |
| 代理商： | ISL88813IP846Z |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)
6
FN8092.0
October 18, 2005
Principles of Operation
The ISL88705 - ISL88813 devices provide those functions
needed for monitoring critical voltages such as power-supply
and battery functions in microprocessor systems. Features of
these supervisors include Power On Reset control, Supply
Voltage Supervision, Power-Fail Detection and Manual Reset
Assertion. The integration of all these features along with high
reset threshold accuracy and low power consumption make
these devices ideal for portable or battery-powered equipment.
Power-On Reset (POR)
Applying power to the device activates a POR circuit which
asserts reset (i.e. RST goes high while RST goes low). These
signals provide several benefits:
It prevents the system microprocessor from starting to
operate with insufficient voltage.
It prevents the processor from operating prior to stabilization
of the oscillator.
It ensures that the monitored device is held out of operation
until internal registers are properly loaded.
It allows time for an FPGA to download its configuration prior
to initialization of the circuit.
The reset signals remain active until V
DD
rises above the
minimum voltage sense level for time period t
POR
. This
ensures that the supply voltage has stabilized to sufficient
operating levels.
Low Voltage Monitoring
These devices monitor both the voltage level of V
DD
and an
auxiliary voltage on PFI.
When IC is initially biased reset is asserted until the V
DD
voltage is greater than the specific IC fixed-voltage trip point
for the t
POR
duration of 200ms. At any subsequent time that
V
DD
does not exceed its voltage threshold, reset is once
again asserted, i.e. RST is high and RST is low.
Power Failure Monitor
These devices also have a Power-Failure Monitor that helps
to monitor an additional critical voltage on the Power-Fail
Input (PFI) pin. For example, the PFI pin could be used to
provide an early power-fail warning, detect a low-battery
condition, presence detection or simply monitor a power
supply other than +5V. The 1.25V threshold detector can be
adjusted using an external resistor divider network to provide
custom voltage monitoring of voltages greater than 1.25V,
according to the following formula (See Figure 1):
PFI V
TH
= 1.25 (R1 + R2/R2)
PFO goes low whenever PFI is less than the 1.25V (or user-
set) threshold voltage.
FIGURE 3. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 4. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
Typical Performance Curves
(Continued)
781mW
θ
JA
= 160°C/W
SO8
1.2
1
0.8
0.6
0.2
0
0
25
50
75
100
150
AMBIENT TEMPERATURE (°C)
P
125
85
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.4
1.136W
θ
JA
= 110°C/W
SO8
1.8
1.6
1.4
0.8
0.6
0.2
0
0
25
50
75
100
150
AMBIENT TEMPERATURE (°C)
P
125
85
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.4
1
1.2
FIGURE 5. CUSTOM V
TH
WITH RESISTOR DIVIDER ON PFI
V
IN
R
1
R
2
PFI
ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL88706IP826Z | SPST, Snap-in Pushbuttons |
| ISL88716IP826Z | SPST, Snap-in Pushbuttons |
| ISL88706IP829Z | SPST, 1 and 5 Amp Pushbutton |
| ISL88706IP831Z | SPST, 1 and 5 Amp Pushbutton |
| ISL88706IP844Z | SPST, 1 and 5 Amp Pushbutton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL89160FBEAZ | 功能描述:IC MOSFET DRIVER 2CH 6A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān) 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時(shí)間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動(dòng)）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| ISL89160FBEAZ-T | 功能描述:IC MOSFET DRIVER 2CH 6A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān) 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:* |
| ISL89160FBEBZ | 功能描述:IC MOSFET DRIVER 2CH 6A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān) 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時(shí)間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動(dòng)）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| ISL89160FBEBZ-T | 功能描述:IC MOSFET DRIVER 2CH 6A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān) 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:* |
| ISL89160FRTAZ | 功能描述:IC MOSFET DRIVER 2CH 6A 8TDFN RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 外部開(kāi)關(guān) 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:* |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。