參數(shù)資料
型號： SI9138
廠商： Vishay Intertechnology,Inc.
英文描述： Multi-Output, Individual On/Off Control Power-Supply Controller
中文描述： 多輸出，單獨開/關(guān)控制電源控制器
文件頁數(shù)： 1/14頁
文件大?。?/td> 150K
代理商： SI9138
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(guān)PDF資料
PDF描述
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
SI9142DB Synchronous Buck Controller for High Performance Processors
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SI9138DB 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Multi-Output, Individual On/Off Control Power-Supply Controller
SI9138LG 功能描述:電流型 PWM 控制器 Power Sup Controller RoHS:否 制造商:Texas Instruments 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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(guān)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(fēng)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(guān)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(fēng)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(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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