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| 型号： | SG6858TZ |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM PROG GREEN CM 6SSOT |
| 标准包装： | 1 |
| 输出隔离： | 隔离 |
| 频率范围： | 65kHz ~ 75kHz |
| 输入电压： | 11.5 V ~ 30 V |
| 输出电压： | 17V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 供应商设备封装： | 6-SSOT |
| 包装： | 标准包装 |
| 其它名称： | SG6858TZDKR |
September 2009
SG6858
Low-Cost, Green-Mode, PWM Controller for Flyback
Converters
Features
Green-Mode PWM
Supports the ”Blue Angel” Standard
Low Startup Current: 10μA (Maximum)
Low Operating Current: 2.5mA
Leading-Edge Blanking (LEB)
Constant Output Power Limit
Built-in Synchronized Slope Compensation
Current-Mode Operation
Cycle-by-Cycle Current Limiting
Under-Voltage Lockout (UVLO)
Programmable PWM Frequency
V DD Over-Voltage Protection with Auto-Restart
Gate Output Voltage Clamped at 17V
Few External Components Required
SSOT-26 and DIP-8 Packages Available
Applications
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, PC 5V
standby power, and consumer electronics
Replacements for linear transformers and RCC
SMPS
Offline High Brightness (HB) LED drivers
Ordering Information
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 meet even the strictest power
conservation requirements.
The BiCMOS fabrication process enables reducing the
startup current to 10μA and the operating current to
2.5mA. 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 even during
short circuits.
To protect the external power MOSFET from being
damaged by supply over voltage, the output driver is
clamped at 17V. SG6858 controllers can improve the
performance and reduce the production cost of power
supplies. The SG6858 replaces linear and RCC-mode
power adapters. It is available in 8-pin DIP and 6-pin
SSOT-26 packages.
Part Number
SG6858TZ
SG6858DZ
Operating Temperature Range
-40 to +125°C
-40 to +125°C
Eco Status
RoHS
RoHS
Package
6-Pin SSOT-26
8-Pin DIP-8
Packing Method
Tape & Reel
Tube
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html .
? 2008 Fairchild Semiconductor Corporation
SG6858 ? Rev. 1.2.4
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SG6859 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low Cost Green-Mode PWM Controller for Flyback Converters |
| SG6859A | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low-Cost, Green-Mode PWM Controller for Flyback Converters |
| SG6859A_10 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low-Cost, Green-Mode PWM Controller for Flyback Converters |
| SG6859ADY | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low-Cost, Green-Mode PWM Controller for Flyback Converters |
| SG6859ADZ | 功能描述:电流型 PWM 控制器 Current Mode PWM Controller 8-Pin 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 |
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