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参数资料
| 型号： | SG6859ADZ |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC PWM FLYBACK ISOLATED CM 8-DIP |
| 标准包装： | 59 |
| 输出隔离： | * |
| 频率范围： | * |
| 输入电压： | * |
| 输出电压： | * |
| 功率（瓦特）： | * |
| 工作温度： | * |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | * |
| 包装： | 管件 |
August 2010
SG6859A
Low-Cost, Green-Mode PWM Controller for Flyback Converters
Features
Green-Mode PWM
Supports the “Blue Angel” Standard
Low Startup Current: 9 μ A
Low Operating Current: 3mA
300mA Driving Capability
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 SSOT-6 Package
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 auxiliary
supplies, home appliances, and consumer electronics
Replacements for linear transformers and RCC SMPS
PC 5V standby power
? 2007 Fairchild Semiconductor Corporation
SG6859A ? Rev. 1.0.4
Description
This highly integrated PWM controller provides several
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 meet
even the strictest power conservation requirements.
The BiCMOS fabrication process enables reducing the
startup current to 9 μ A and the operating current to 3mA.
To further improve power conservation, a large startup
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 during short-circuits.
To protect the external power MOSFET from damage by
supply over voltage, the SG6859A’s output driver is
clamped at 17V. SG6859A controllers can be used to
improve the performance and reduce the production
cost of power supplies. The best choice for replacing
linear and RCC-mode power adapters, the SG6859A is
available in 8-pin DIP and 6-pin SSOT-6 packages.
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SG6859AT | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| SG6859ATY | 功能描述:开关变换器、稳压器与控制器 Low-Cost Green-Mode PWM Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SG6859ATZ | 功能描述:电流型 PWM 控制器 Highly-Integrated Green-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SG6859DDY | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| SG6859DTY | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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