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參數資料
| 型號： | Si786DSG-T1 |
| 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： | 1/14頁 |
| 文件大小： | 130K |
| 代理商： | SI786DSG-T1 |
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PDF資料 |
PDF描述 |
|---|---|
| Si786LG | Dual-Output Power-Supply Controller |
| Si786LG-T1 | Dual-Output Power-Supply Controller |
| Si786LRG | Dual-Output Power-Supply Controller |
| Si786LRG-T1 | Dual-Output Power-Supply Controller |
| Si786LSG | Dual-Output Power-Supply Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SI786DSG-T1-E3 | 功能描述:開關變換器、穩(wěn)壓器與控制器 Dual 3.6V 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 |
| SI786LG | 功能描述:DC/DC 開關控制器 3.3V Power Sup Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| SI786LG-E3 | 功能描述:DC/DC 開關控制器 3.3V Power Sup Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| SI786LG-T1 | 功能描述:開關變換器、穩(wěn)壓器與控制器 Dual 3.3V 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 |
| SI786LG-T1-E3 | 功能描述:開關變換器、穩(wěn)壓器與控制器 Dual 3.3V 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 |
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