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FAN6751HLMY

更新时间： 2024-02-19 18:18:20
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 控制器
页数 文件大小 规格书
13页 493K
描述
Highly Integrated Green-Mode PWM Controller

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中文翻译

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FAN6751HLMY 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Transferred零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.66
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：22 V
最小输入电压：11.5 V标称输入电压：15 V
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：105 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：SINGLE最大切换频率：68 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.9 mm
Base Number Matches：1

FAN6751HLMY 数据手册

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www.fairchildsemi.com  
AN-6073  
FAN6751 — Highly Integrated Green-Mode PWM Controller  
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Internal Open-loop Protection  
Introduction  
GATE Output Maximum Voltage Clamp: 18V  
VDD Under-Voltage Lockout (UVLO)  
VDD Over-Voltage Protection (OVP)  
Internal Recovery Circuit (OVP, OLP)  
Internal Sense Short-Circuit Protection  
External Constant Power Limit (Full AC Input Range)  
Internal OTP Sensor with Hysteresis  
Built-in 5ms Soft-Start Function  
This application note describes a detailed design strategy for  
a high-efficiency, compact flyback converter. Design  
considerations and mathematical equations are presented as  
well as guidelines for a printed circuit board layout. The  
highly integrated FAN6751 series of PWM controllers  
provides several features to enhance the performance for  
LCDM/TV, NB, and adapters.  
The green-mode function includes off-time modulation and  
burst mode to reduce the PWM frequency at light-load and  
in no-load conditions. To avoid acoustic noise problems, the  
minimum PWM frequency is set above 18KHz. This 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. Built-in synchronized  
slope compensation achieves stable peak-current-mode  
control. The proprietary external line compensation ensures  
constant output power limit over a wide AC input voltage  
Built-in VIN Pin Pull HIGH (> 4.7V) Recovery  
Function for Second-Side Output OVP  
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Brownout Protection with Hysteresis  
Applications  
General-purpose, switch-mode power supplies and flyback  
power converters, including:  
range, from 90VAC to 264VAC  
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Power Adapters  
Open-frame SMPS  
LCD Monitor/TV  
FAN6751 provides many protection functions, as shown in  
Table 1. 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.  
SOP-8  
Features  
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High-Voltage Startup  
GND  
FB  
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3
4
8
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5
GATE  
VDD  
Low Operating Current: 4mA  
Linearly Decreasing PWM Frequency to 18KHz  
Fixed PWM Frequency: 65KHz  
Peak-Current-Mode Control  
NC  
HV  
SENSE  
VIN  
Cycle-by-Cycle Current Limiting  
Leading-Edge Blanking (LEB)  
Synchronized Slope Compensation  
Figure 1. Pin Configuration (Top View)  
Table 1. Protection Functions of FAN6751 Series  
Pull-High  
Protection (VIN)  
OTP  
(Internal)  
SCP  
(SENSE)  
PWM  
Frequency  
Part Number  
OVP (VDD)  
OLP (FB)  
FAN6751MRMY  
FAN6751HLMY  
Recovery  
Latch  
Recovery  
Latch  
Recovery  
Latch  
Recovery  
Recovery  
Recovery  
Recovery  
65KHz  
100KHz  
© 2008 Fairchild Semiconductor Corporation  
Rev. 1.0.0 • 9/26/08  
www.fairchildsemi.com  
1234567...13

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