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參數(shù)資料
| 型號： | SG6840 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH INTEGRATED PWM CONTROLLER |
| 中文描述： | 高集成PWM控制器 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 384K |
| 代理商： | SG6840 |
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Product Specification
SG6840
2002 System General Corporation Ver1.0 http://www.sg.com.tw
FEATURES OVERVIEW
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Green-mode PWM to support “Blue Angle”Norm
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Low start up current 30uA
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Low operation current 3mA
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Leading-edge blanking
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Built-in synchronized slope compensation
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Totem pole output includes soft driving
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Constant output power
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Current mode operation
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Cycle-by-cycle current limiting
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Under voltage lockout (UVLO)
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Short circuit protection
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Programmable over-temperature protection
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Few external components & low cost solution
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S G 6 8 4 0 D a t a S h e e t
DESCRIPTION
T
his high-integrated PWM controller provides
several special enhancements to satisfy the
needs for low power standby and protection
features. In standby mode, PWM frequency
reduction is used to lower the power consump-
tion and support a stable output voltage. Due to
Bi-CMOS process, the SG6840 reduces start-
up and operation current to achieve a higher
efficiency power conversion. Start-up current
has been reduced to 30uA typical and operating
current has been shrunk to 3mA. The SG6840
is a fixed frequency PWM controller in normal
operation; its patented green-mode function will
decrease the PWM frequency in response to
the decrease of the load. This green function
dramatically reduces the power loss in no load
and light load conditions that assist the power
supply to meet the power conservation require-
ment. The proprietary synchronized slope com-
pensation ensures the stability of the current
loop for continuous-mode operation. Built-in line
-voltage compensation maintains an identical
output power for a wide input range. An NTC
thermistor is applied to sense the temperature
for over-temperature protection. The SG6840 is
available in 8-pin DIP and SO packages.
APPLICATIONS
G
eneral-purpose switching mode power sup-
plies and flyback power converters, and
●
Power Adapter
●
Open-frame SMPS
●
Battery Charger Adapter
PIN CONFIGURATION
相關PDF資料 |
PDF描述 |
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| SG6841 | High-integrated Green-mode PWM Controller |
| SG6841D | High-integrated Green-mode PWM Controller |
| SG6841S | High-integrated Green-mode PWM Controller |
| SG6846LD | Highly-Integrated Green-Mode PWM Controller |
| SG6846LDZ | Highly-Integrated Green-Mode PWM Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SG6841 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
| SG6841D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
| SG6841DZ | 功能描述:電壓模式 PWM 控制器 HI-INTEGRD GRN-MODE PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG6841DZ3 | 功能描述:電壓模式 PWM 控制器 SINGLE STAGE PFC CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG6841S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High-integrated Green-mode PWM Controller |
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