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參數(shù)資料
| 型號： | STLC5444 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Quad Feed Power Supply(ISDN四饋電電源) |
| 中文描述： | 四飼料電源（綜合業(yè)務(wù)數(shù)字網(wǎng)四饋電電源） |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 140K |
| 代理商： | STLC5444 |
FUNCTIONAL DESCRIPTION
(continued)
DGND - Ground Digital
ILIM - Current Limit Programming(Input)
ILIM programs the current limit of the Output driv-
ers using an external resistor connectedbetween
ILIM and VBB. The ILIM pin is 1.25V more posi-
tive than VBB. The current limit is 5mA plus 1000
times the current in the external resistor. The pro-
grammed current limit applies to each driver.
INT - Interrupt (Output; Open-Collector, Active
Low)
INT augments the Microprocessor Interface by
generating an interrupt when a Current Overload
Detector (COD) occurs. INT is active whenever
any bits in the COD register are active. INT is not
latched; when the COD register is zero, INT goes
inactive (High). INT will also go inactive if the
IQFPS automatically disables the S-output driver
that caused the interrupt (due to Thermal Over-
load), or if the microprocessor disables that line
via the Line Enable Register (LER). COD inter-
rupts can be masked via the Indirect Address
Register (IAR); RESET always disables the INT
pin.
RD - Read (Input;Active Low)
The active Low read signal is conditioned by CS
and transfers internal information to the data bus.
If A0 is a logical 0, logic levels of the Indirect Ad-
dress Register (IAR) and Thermal Shutdown
Status bit will be transferred to D3-D0. If A0 is a
logical 1, the data addressed by the IAR will be
transferredto D3-D0.
RESET- Reset (Input; Active High)
RESET initialize the registers in the device, leav-
ing the drivers switched off.
S3-S0 - Drivers(Output)
S3-S0 each supplypower to one line. The outputs
can sink up to 120 mA each. The voltage at the
line is connectedto VBB through a DMOS switch.
VBB - BatteryVoltage (input)
VBB is the internal negative supply voltage. VBB
must always be connected to the most negative
supply voltage. The MPI Registers will not func-
tion properly when the battery power is discon-
nected, that is, when VBB is floating or grounded.
The IQFPS should also be reset if a drastic tran-
sient is appliedto VBB.
VCC - +5VPower Supply (Input)
WR - Write (Input; Active Low)
The active Low write signal is conditioned by CS
and transfers information from the data bus to an
internal register selected by A0. If A0 is a logical
1, D3-D0 is written into the Line Enable Register
(LER). If A0 is a logical 0, D3-D0 is written into
the IAR. LER and IAR are the only two writable
registersin thedevice.
STLC5444
4/17
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| STLC5444B1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD FEEDER POWER SUPPLY |
| STLC5444FN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD FEEDER POWER SUPPLY |
| STLC5445 | 功能描述:監(jiān)控電路 Asics RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| STLC5460 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LINE CARD INTERFACE CONTROLLER |
| STLC5460FN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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