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參數(shù)資料
| 型號： | ML6554CU |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 3A Bus Termination Regulator |
| 中文描述： | BUS TERMINATOR SUPPORT CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SOP-16 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 386K |
| 代理商： | ML6554CU |
ML6554
PRODUCT SPECIFICATION
4
REV. 1.1.3 3/8/02
Functional Description
This switching regulator is capable of sinking and sourcing
3A of current without an external heatsink. The ML6554
uses a power surface mount package (PSOP) that includes
an integrated heat slug. The heat can be piped through the
bottom of the device and onto the PCB (Figure 1).
The ML6554 integrates two power MOSFETs that can be
used to source and sink 3A of current while maintaining a
tight voltage regulation. Using the external feedback, the
output can be regulated well within 3% or less, depending on
the external components chosen. Separate voltage supply
inputs have been added to accommodate applications with
various power supplies for the databus and power buses, see
Figure 2.
Outputs
The output voltage pins (V
address, or clock lines via an external inductor. See the
Applications section for recommendations. Output voltage
is determined by the V
CCQ
or VREF
L1
, V
L2
) are tied to the databus,
IN
inputs.
Inputs
The input voltage pins (V
output voltages (V
the VREF
IN
pin is floating, the output voltage is 50% of the
V
CCQ
input. V
CCQ
can be the reference voltage for the
databus.
CCQ
L2
or VREF
) . In the default mode, where
IN
) determine the
L1
or V
Output voltage can also be selected by forcing a voltage at
the VREF
IN
pin. In this case, the output voltage follows the
voltage at the VREF
IN
input. Simple voltage dividers can be
used this case to produce a wide variety of output voltages
between 0.7V and V
DD
–0.7V.
VREF Input and Output
The VREF
IN
input can be used to force a voltage at the
outputs (Inputs section, above). The VREF
output pin that is driven by a small output buffer to provide
the V
REF
signal to other devices in the system. The output
buffer is capable of driving several output loads. The output
buffer can handle 3mA.
OUT
pin is an
Other Supply Voltages
Several inputs are provide for the supply voltages: PV
PV
DD2
, AV
DD1
,
CC
, and V
DD
.
The PV
DD1
and PV
DD2
provide the power supply to the
power MOSFETs. V
DD
provides the voltage supply to the
digital sections, while AV
CC
supplies the voltage for the
analog sections. Again, see the Applications section for
recommendations.
Feedback Input
The V
FB
pin is an input that can be used for closed loop
compensation. This input is derived from the voltage output.
See application section for recommendation.
Figure 1. Cutaway view of PSOP Package
HEAT SLUG
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ML6554CUX | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A Bus Termination RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML6554IU | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A Bus Termination RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML6554IU_Q | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A Bus Termination RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML6554IUX | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A Bus Termination RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML6599 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Hot-Insertable Active SCSI Terminator |
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