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參數(shù)資料
| 型號： | SI9138LG |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | DIODE ZENER DUAL COMMON-CATHODE 300mW 11Vz 5mA-Izt 0.0545 0.1uA-Ir 8.5 SOT-23 3K/REEL |
| 中文描述： | 多輸出，單獨開/關控制電源控制器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 150K |
| 代理商： | SI9138LG |
Si9138
Vishay Siliconix
New Product
Document Number: 71446
S-20642—Rev. B, 13-May-02
www.vishay.com
1
Multi-Output, Individual On/Off Control Power-Supply Controller
FEATURES
Up to 95% Efficiency
3% Total Regulation (Line, Load and Temperature)
5.5-V to 30-V Input Voltage Range
3.3-V, 5-V, and Adjustable 5- to 12-V Outputs
Individual ON/OFF Control for 3.3 V and 5 V
300-kHz Low-Noise Fixed Frequency Operation
Precision 3.3-V Reference Output
5-V/30-mA Linear Regulator Output
High Efficiency Pulse Skipping Mode Operation at Light Load
Only Three Inductors Required
No Transformer
LITTLE FOOT Optimized Output Drivers
Internal Soft-Start
Minimal External Control Components
28-Pin SSOP Package
Output Overvoltage Protection
Output Undervoltage Shutdown
Power-Good Output (RESET)
APPLICATIONS
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
Portable Display
Multimedia Set-Top Box
Telecommunications Infrastructure
Network Equipment
Distributed Power Conversion
DESCRIPTION
The Si9138 is a current-mode PWM and PSM converter
controller, with two synchronous buck controllers (3.3 V and
5 V) and an adjustable Buck-Boost controller whose output
can be set between 5 and 12 V with an external resistor divider.
Designed for portable devices, it offers a total of five power
outputs (three tightly regulated dc/dc converter outputs, a
precision 3.3-V reference and a 5-V LDO output) and includes
on-board
pre-programmed
power-good
signal
with
power-up
delay,
sequencing,
frequency
internal
compensation networks and automatic boot-strapping. It
requires minimum external components and is capable of
achieving conversion efficiencies approaching 95%.
The Si9138 is available in a 28-pin SSOP package and
specified to operate over the extended commercial (0 C to
90 C) temperature range.
FUNCTIONAL BLOCK DIAGRAM
5-V
Linear
Regulator
3.3-V
Voltage
Reference
3.3-V
SMPS
5-V
SMPS
5- to 12-V SMPS
Programmable
V
IN
(5.5 V to 30 V)
+3.3 V/6 A
V
L
(5.0 V)
V
(+3.3 V)
+5 V/6 A
V
+5- to +12-V/500 mA
Adjustable
Power_Good
RESET
(Power_Good)
ON3
ON5
Logic Control
相關PDF資料 |
PDF描述 |
|---|---|
| SI9138 | Multi-Output, Individual On/Off Control Power-Supply Controller |
| SI9138DB | Multi-Output, Individual On/Off Control Power-Supply Controller |
| Si9140 | SMP Controller For High Performance Process Power Supplies(高性能電源處理的SMP控制器) |
| SI9142 | Synchronous Buck Controller for High Performance Processors |
| SI9142CW | Synchronous Buck Controller for High Performance Processors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SI9138LG-E3 | 功能描述:電流型 PWM 控制器 Multi-Out Pwr-Supply Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9138LG-T1 | 功能描述:電流型 PWM 控制器 Multi-Out Pwr-Supply Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9138LG-T1-E3 | 功能描述:電流型 PWM 控制器 Multi-Out Pwr-Supply Controller RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9139 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Multi-Output, Individual On/Off Control Power-Supply Controller |
| SI9139DG | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Multi-Output, Individual On/Off Control Power-Supply Controller |
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