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| 型号： | SI786LSG-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 1/16页 |
| 文件大小： | 236K |
| 描述： | IC REG QD BUCK/LINEAR 28SSOP |
| 标准包装： | 225 |
| 拓扑： | 降压（降压）（2），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 4 |
| 频率 - 开关： | 300kHz，200kHz |
| 电压/电流 - 输出 1： | 控制器 |
| 电压/电流 - 输出 2： | 控制器 |
| 电压/电流 - 输出 3： | 5V，5mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 5.5 V ~ 30 V |
| 工作温度： | -10°C ~ 90°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 散装 |
Vishay Siliconix
Si786
Document Number: 70189
S-40807-Rev. J, 26-Apr-04
www.vishay.com
1
Product is End of Life 3/2014
Dual-Output Power-Supply Controller
FEATURES
" Fixed 5 V and 3.3 V Step-down Converters
" Less than 500 礎 Quiescent Current per Converter
" 25 礎 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 lin-
ear 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 mon-
itoring 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 regula-
tor, the Si9140 SMP Controller for High Performance Proces-
sor Power Supplies, five Si4410 N-Channel TrenchFET
?/DIV>
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癈 to 70 癈), (- 10 癈 to 90 癈) and (- 40 癈 to 85 癈) tem-
perature 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
礟
Memory
Peripherals
Power-Good
Low-Battery Warning
5.5. V
to
30 V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI786LSG-T1 | 功能描述:开关变换器、稳压器与控制器 Dual 3.45V Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI786LSG-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Dual 3.45V Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI7872DP | 制造商:VISHAY 制造商全称: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 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
| SI7872DP-T1-E3 | 功能描述:MOSFET 30V 10A 0.022Ohm RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
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