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| 型号： | SG6742MRSY |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM GREEN CM OVP 8SOP |
| 标准包装： | 1 |
| 输出隔离： | 隔离 |
| 频率范围： | 62kHz ~ 68kHz |
| 输入电压： | 10.5 V ~ 22 V |
| 输出电压： | 18V |
| 功率（瓦特）： | 400mW |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1222 (CN2011-ZH PDF) |
| 其它名称： | SG6742MRSYDKR |
June 2009
SG6742ML/MR
Highly Integrated Green-Mode PWM Controller
Features
High-Voltage Startup
Low Operating Current: 2.7mA
Linearly Decreasing PWM Frequency to 22KHz
Frequency Hopping to Reduce EMI Emission
Fixed PWM Frequency: 65KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking
Synchronized Slope Compensation
Internal Open-Loop Protection
GATE Output Maximum Voltage Clamp: 18V
V DD Under-Voltage Lockout (UVLO)
V DD Over-Voltage Protection (OVP)
Programmable Over-Temperature Protection (OTP)
Internal Latch Circuit (OVP, OTP)
Internal Sense Short-Circuit Protection
Build-in 5ms Soft-Start Function
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Power Adapters
Open-Frame SMPS
Ordering Information
Description
The highly integrated SG6742ML/MR PWM controller
provides several features to enhance the performance
of flyback converters.
To minimize standby power consumption, a proprietary
green-mode function provides off-time modulation to
linearly decrease the switching frequency at light-load
conditions. To avoid acoustic-noise problems, the
minimum PWM frequency is set above 22KHz. The
green-mode function enables the power supply to meet
international power conservation requirements. With the
internal high-voltage startup circuitry, the power loss
due to bleeding resistors is also eliminated. To further
reduce power consumption, SG6742ML/MR is
manufactured using the BiCMOS process, which allows
an operating current of only 2.7mA.
SG6742ML/MR integrates a frequency-hopping function
that helps reduce EMI emission of a power supply with
minimum line filters. Its built-in synchronized slope
compensation achieves stable peak-current-mode
control. The proprietary, internal line compensation
ensures constant output power limit over a wide AC
input voltage range, from 90V AC to 264V AC .
SG6742ML/MR provides many protection functions. In
addition to cycle-by-cycle current limiting, the internal
open-loop protection circuit ensures safety should an
open-loop or output short-circuit failure occur. PWM
output is disabled until V DD drops below the UVLO lower
limit, when the controller starts up again. As long as V DD
exceeds ~26V, the internal OVP circuit is triggered.
SG6742ML/MR is available in an 8-pin SOP package.
Part
Number
SG6742MLSY
SG6742MRSY
Operating
Temperature
Range
-40 to +105°C
-40 to +105°C
OLP
Function
Latch
Restart
Package
8-Lead Small Outline Package (SOP)
8-Lead Small Outline Package (SOP)
Eco
Status
Green
Green
Packing
Method
Tape & Reel
Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html .
? 2008 Fairchild Semiconductor Corporation
SG6742ML/MR ? Rev. 1.0.4
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SG6742SY | 功能描述:电流型 PWM 控制器 Highly Integrated Gr Mode PWM Contrl 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 |
| SG6742SZ | 功能描述:电流型 PWM 控制器 Highly-Integrated Grn Mode PWM Cntrl 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 |
| SG6742WMRSY | 功能描述:电流型 PWM 控制器 High Integ GreenMode PWM Controller 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 |
| SG68 | 制造商:Ametherm Inc 功能描述: |
| SG6840 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:HIGH INTEGRATED PWM CONTROLLER |
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