- 您現在的位置：買賣IC網 > Datasheet目錄44 > MCP18480T-I/SS (Microchip Technology)IC HOT SWAP CTRLR -48V 20SSOP Datasheet資料下載
參數資料
| 型號： | MCP18480T-I/SS |
| 廠商： | Microchip Technology |
| 文件頁數： | 43/64頁 |
| 文件大小： | 871K |
| 描述： | IC HOT SWAP CTRLR -48V 20SSOP |
| 標準包裝： | 1,600 |
| 類型： | 熱交換控制器 |
| 應用： | IP 電話，LAN 網絡供電，網絡路由器和交換機 |
| 內部開關： | 無 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 20-SSOP |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁當前第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁
?2003 Microchip Technology Inc.
DS20091B-page 43
MCP18480
5.0 POWER-UP
5.1
V
POS
and V
NEG
Connection
For proper system operation, it is required that the sys-
tem ground and the V
NEG
pin have a solid connection
before voltages are applied to any logic on the board.
5.2
The Board Circuitry
After the MCP18480 has good voltages on the V
POS
and V
NEG
pins, the board may have voltages applied to
any of the other signals (a good voltage on V
POS
indi-
cates a good voltage on the system ground). The
MCP18480 will start to source a small current to the
external MOSFET to begin powering the board. This
will turn on the MOSFET starting to power the external
circuitry (load) of the board. The current from the GATE
pin (into the external MOSFET) increases as the V
DS
of
the MOSFET decreases. When the VDS of the MOS-
FET is below the voltage determined by the two resis-
tors on the DRAIN
TH
pin (R
DRAIN1
and R
DRAIN2
), and
the voltage on the GATE pin is greater than 8V, the
PWRGOOD pin is active.
6.0 INTERNAL SIGNAL
DESCRIPTIONS
The figure on page 2 illustrates a block diagram of the
MCP18480. Between the functional blocks, there are
some signals that have been named. These signals are
briefly explained in Section 6.1 thru Section 6.7.
6.1
Undervoltage Active
A signal that indicates (when low) that System Ground
- V
NEG
is less then the minimum voltage.
6.2
Overvoltage Active
A signal that indicates (when low) that System Ground
-V
NEG
is greater then the maximum voltage.
6.3
LATCHOFF
A signal that controls the GATE pin due to a timeout of
the current-limiting timer.
6.4
Current Limit TIMER
A signal that controls the reduction of source current on
the GATE pin and starts the voltage ramp of the current
limit timer.
6.5
Current Limit Feedback
A voltage that is proportional to the V
DS
of the external
MOSFET to set a trip point for current-limiting.
6.6
TIMEOUT
A signal that indicates the completion of the foldback
time and is used to start the latchoff time.
6.7
Circuit Breaker
A signal that immediately causes the GATE pin output
to be driven to V
NEG
upon the detection of excessive
current in the external FET.
相關PDF資料 |
PDF描述 |
|---|---|
| MCP9808T-E/MS | IC TEMP SENSOR DGTL I2C 8MSOP |
| MCZ33998EGR2 | IC REG CHARGEPUMP/LINEAR 24SOIC |
| MCZ34652EFR2 | IC HOTSWAP CTRLR 2A NEG 16SOIC |
| MCZ34653EFR2 | IC HOTSWAP CTRLR 1A NEG 8-SOIC |
| MCZ34670EG | IC POE CURR MODE SW REG 20-SOIC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MCP-18H | 制造商:Taiyo Electric Ind. 功能描述: |
| MCP-18-I9-LL | 制造商:YAMAICHI 制造商全稱:Yamaichi Electronics Co., Ltd. 功能描述:MatchCon |
| MCP-18-TI9-LL | 制造商:YAMAICHI 制造商全稱:Yamaichi Electronics Co., Ltd. 功能描述:MatchCon |
| MCP19035-AAAAE/MF | 功能描述:加速傳感器開發工具 Sync Buck, PWM Ctrl 300Khz, 20ns RoHS:否 制造商:Murata 工具用于評估:SCA3100-D04 加速:2 g 傳感軸:Triple Axis 接口類型:SPI 工作電壓:3.3 V |
| MCP19035-AAABE/MF | 功能描述:加速傳感器開發工具 Sync Buck, PWM Ctrl 300Khz, 8ns RoHS:否 制造商:Murata 工具用于評估:SCA3100-D04 加速:2 g 傳感軸:Triple Axis 接口類型:SPI 工作電壓:3.3 V |
發布緊急采購，3分鐘左右您將得到回復。