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| 型号： | FAN6747WLMY |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTLR GREEN MODE 8-SOIC |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 频率范围： | 61kHz ~ 69kHz |
| 输入电压： | 10 V ~ 24 V |
| 输出电压： | 14V |
| 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-SOIC |
| 包装： | 带卷 (TR) |
September 2010
FAN6747
Highly Integrated Green-Mode PWM Controller
Features
High-Voltage Startup
AC-Line Brownout Protection by HV Pin
Constant Output Power Limit by HV Pin
(Full AC-Line Range)
Built-in 8ms Soft-Start Function
Two-Level Over-Current Protection (OCP) with
220ms Debounce
Short-Circuit Protection (SCP) with 15ms Debounce
as Output Short
Peak-Current Mode Operation with Cycle-by-Cycle
Current Limiting
Low Startup Current: 30μA
Low Operating Current: 1.7mA
Over-Temperature Protection (OTP) with an
External Negative-Temperature-Coefficient (NTC)
Thermistor
PWM Frequency Decreasing at Green-Mode
V DD Over-Voltage Protection (OVP)
Internal Latch Circuit for OVP, OTP, SCP, and OCP
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Power Adapters
SMPS with Peak-Current Output, such as for
Printers, Scanners, Motor Drivers
AC/DC NB Adapters
Open-Frame SMPS
Ordering Information
Description
The highly integrated FAN6747 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 decrease the switching
frequency with load condition.
Under zero-load condition, the power supply enters
burst mode and burst frequency can be low to save
more power. Green-mode function enables the power
supply to meet international power conservation
requirements.
The FAN6747 is especially designed for SMPS with
peak-current output. It incorporates a cycle-by-cycle
current limiting and two-level Over-Current-Protection
(OCP) that can handle peak load with a debounce time.
Once the current is over the threshold level, it triggers
the first counter 15ms and checks if V DD is below 10V; if
it is, the PWM latches off for SCP. If V DD is higher than
10V; it keeps counting to 220ms, then the PWM latches
off for OCP.
FAN6747 also integrates a frequency-hopping function
internally to help reduce EMI emission of a power
supply with minimum line filters. Built-in proprietary
internal synchronized slope compensation achieves
constant output power limit over universal AC line
range. The gate output is clamped at 14V to protect the
external MOSFET from over-voltage damage.
Other protection functions include AC-line brownout
protection with hysteresis and V DD over-voltage
protection. For over-temperature protection, an external
NTC thermistor can be applied to sense the ambient
temperature. When OCP, OVP, SCP, or OTP is
activated, an internal latch circuit latches off the
controller. The latch is reset when the V DD supply is
removed.
Part Number
FAN6747LMY
Operating
Temperature Range
-40 to +105°C
Package
8-Lead, Small-Outline Integrated Circuit (SOIC),
JEDEC MS-012, .15-Inch Narrow Body
Packing
Method
Tape & Reel
? 2010 Fairchild Semiconductor Corporation
FAN6747 ? Rev. 1.0.3
www.fairchildsemi.com
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相关代理商/技术参数 |
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| FAN6749MLM | 功能描述:电流型 PWM 控制器 Ultra Green-Mode 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 |
| FAN6751 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| FAN6751HLMY | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly Integrated Green-Mode PWM Controller |
| FAN6751MR | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Highly-Integrated Green-Mode PWM Controller |
| FAN6751MRMY | 功能描述:开关变换器、稳压器与控制器 30V 68kHz Hi-Integr Grn-Mode PWM Cont. 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 |
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