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參數資料
| 型號： | SG6859TZ |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Low Cost Green-Mode PWM Controller for Flyback Converters |
| 中文描述： | SWITCHING CONTROLLER, 75 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | LEAD FREE, SOT-26, 6 PIN |
| 文件頁數： | 1/13頁 |
| 文件大小： | 483K |
| 代理商： | SG6859TZ |
Product Specification
Low Cost Green-Mode PWM Controller for Flyback Converters
SG6859
FEATURES
Green-Mode PWM
Supports the “Blue Angel” Standard
Low Start-up Current (9uA)
Low Operating Current (3mA)
Leading-Edge Blanking
Constant Output Power Limit
Universal Input
Built-in Synchronized Slope Compensation
Current Mode Operation
Cycle-by-cycle Current Limiting
Under Voltage Lockout (UVLO)
Programmable PWM Frequency with Frequency
Hopping
V
DD
Over Voltage Protection (Auto Restart)
Gate Output Voltage Clamped at 17V
Low Cost
Few External Components Required
Small SOT-26 and Dip 8 Packages
System General Corp.
Version 1.2.1(IAO33.0067.B2)
- 1 -
www.sg.com.tw
www.fairchildsemi.com
September 28,2007
APPLICATIONS
General-purpose switching mode power supplies and
flyback power converters, such as
Battery chargers for cellular phones, cordless
phones, PDAs, digital cameras, and power tools
Power adapters for ink jet printers, video game
consoles, and portable audio players
Open-frame SMPS for TV/DVD standby and other
auxiliary supplies, home appliances, and consumer
electronics
Replacements for linear transformers and RCC
SMPS
PC 5V standby power.
DESCRIPTION
This highly integrated PWM controller provides
several special enhancements designed to meet the low
standby-power needs of low-power SMPS. To minimize
standby power consumption, the proprietary green-mode
function provides off-time modulation to linearly
decrease the switching frequency under light-load
conditions. This green-mode function enables the power
supply to easily meet even the strictest power
conservation requirements.
The BiCMOS fabrication process enables reducing
the start-up current to 9uA, and the operating current to
3mA. To further improve power conservation, a large
start-up resistance can be used. Built-in synchronized
slope compensation ensures the stability of peak current
mode control. Proprietary internal compensation provides
a constant output power limit over a universal AC input
range (90V
AC
to 264V
AC
). Pulse-by-pulse current limiting
ensures safe operation even during short-circuits.
To protect the external power MOSFET from being
damaged by supply over voltage, the SG6859’s output
driver is clamped at 17V. SG6859 controllers can be used
to improve the performance and reduce the production
cost of power supplies. The SG6859 is the best choice for
replacing linear and RCC-mode power adapters. It is
available in 8-pin DIP and 6-pin SOT-26 packages.
TYPICAL APPLICATION
SG6859
相關PDF資料 |
PDF描述 |
|---|---|
| SG6901A | PFC / Flyback PWM Controller |
| SG6901ASZ | PFC / Flyback PWM Controller |
| SG6902 | Green-Mode PFC / Flyback-PWM Controller |
| SG6902SZ | Green-Mode PFC / Flyback-PWM Controller |
| SG6961 | Power Factor Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SG6860 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low-Cost, Green-Mode PWM Controller for Flyback Converters |
| SG6860DZ | 功能描述:開關變換器、穩壓器與控制器 Low Cost Green-Mode PWM Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SG6860SZ | 功能描述:軟開關 PWM 控制器 Highly-Integrated Green-Mode PWM RoHS:否 制造商:Fairchild Semiconductor 輸出端數量: 輸出電流: 開關頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| SG6860TY | 功能描述:電流型 PWM 控制器 Low-Cost Green-Mode PWM 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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SG6860TZ | 功能描述:電流型 PWM 控制器 Highly-Integrated Green-Mode PWM 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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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