參數(shù)資料
型號(hào): Si9135
廠商: Vishay Intertechnology,Inc.
英文描述: SMBus Multi-Output Power-Supply Controller(SMB總線多輸出電源控制器)
中文描述: 的SMBus多輸出電源控制器(中小企業(yè)總線多輸出電源控制器)
文件頁(yè)數(shù): 1/14頁(yè)
文件大小: 517K
代理商: SI9135
Si9135
New Product
Vishay Siliconix
Si9135
FaxBack 408-970-5600, request 70817
www.siliconix.com
S-60752—Rev. B, 05-Apr-99
1
SMBus Multi-Output Power-Supply Controller
FEATURES
Up to 95% Efficiency
3% Total Regulation (Each Controller)
5.5-V to 30-V Input Voltage Range
3.3-V, 5-V, and 12-V Outputs
200-kHz/300-kHz Low-Noise Frequency Operation
Precision 3.3-V Reference Output
30 mA Linear Regulator Output
SMBUS Interface
DESCRIPTION
The Si9135 is a current-mode PWM and PSM converter
controller, with two synchronous buck converters (3.3 V and
5 V) and a flyback (non-isolated buck-boost) converter (12 V).
Designed for portable devices, it offers a total five power
outputs (three tightly regulated dc/dc converter outputs, a
precision 3.3-V reference and a 5-V LDO output). It requires
minimum external components and is capable of achieving
conversion efficiencies approaching 95%.
Along with the SMBUS interface, the Si9135 provides
programmable output selection capability.
The Si9135 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
High Efficiency Pulse Skipping Mode Operation at Light
Load
Only Three Inductors Required
*
No Transformer
LITTLE FOOT Optimized Output Drivers
Internal Soft-Start
Synchronizable
Minimal External Control Components
28-Pin SSOP Package
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