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參數(shù)資料
| 型號： | Si786LSG |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Dual-Output Power-Supply Controller |
| 中文描述： | 雙輸出電源控制器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 130K |
| 代理商： | SI786LSG |
Si786
Vishay Siliconix
Document Number: 70189
S-40807—Rev. J, 26-Apr-04
www.vishay.com
1
Dual-Output Power-Supply Controller
FEATURES
Fixed 5-V and 3.3-V Step-down Converters
Less than 500- A Quiescent Current per Converter
25- A Shutdown Current
5.5-V to 30-V Operating Range
DESCRIPTION
The Si786 Dual Controller for Portable Computer Power
Conversion is pin and functionally compatible with the
MAX786 dual-output power supply controller for notebook
computers. The device is designed as a drop-in replacement
for that circuit.
The circuit is a system level integration of two step-down
controllers, micropower 5-V and 3.3-V linear regulators, and
two comparators. The controllers perform high efficiency
conversion of the battery pack energy (typically 12 V) or the
output of an ac to dc wall converter (typically 18-V to 24-V dc)
to 5-V and 3.3-V system supply voltages. The micropower
linear regulator can be used to keep power management and
back-up circuitry alive during the shutdown of the step-down
converters. The comparators can be biased at any voltage
between 2.7 V and the input voltage, simplifying battery
monitoring or providing sufficient voltage to enhance the gate
of a low on-resistance n-channel FET used in switching power
to different zones in the system.
A complete power conversion and management system can
be implemented with the Si786
Dual Controller for Portable
Computer Power Conversion, an inexpensive linear regulator,
the Si9140 SMP Controller for High Performance Processor
Power Supplies, five Si4410 n-channel TrenchFET Power
MOSFETs, one Si4435 p-channel TrenchFET Power
MOSFET, and two Si9712 PC Card (PCMCIA) Interface
Switches.
The Si9130 Pin-Programmable Dual Controller for Portable
PCs is another integrated system level devices for portable PC
power systems.
The Si786 is available in both standard and lead (Pb)-free
28-pin SSOP packages and specified to operate over the (0 C
to 70 C), (
10 C to 90 C) and (
40 C to 85 C) temperature
ranges. See Ordering Information for corresponding part
numbers.
FUNCTIONAL BLOCK DIAGRAM
Si786
SHUTDOWN
5-V ON/OFF
3.3-V ON/OFF
SYNC
Power
Section
3.3 V
5 V
P
Memory
Peripherals
Power-Good
Low-Battery Warning
5.5. V
to
30 V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| Si786CG | Dual-Output Power-Supply Controller |
| Si786DRG-T1 | Dual-Output Power-Supply Controller |
| Si786LSG-T1 | Dual-Output Power-Supply Controller |
| SI7880DP | Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode |
| Si7880DP | Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI786LSG-E3 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3.45V Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SI786LSG-T1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3.45V Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SI786LSG-T1-E3 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3.45V Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SI7872DP | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode |
| SI7872DP-T1 | 功能描述:MOSFET 30V 10A 1.4W RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
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