参数资料
型号: FAN6863RTY
厂商: Fairchild Semiconductor
文件页数: 1/16页
文件大小: 0K
描述: IC PWM CTLR A/R OVP A/R 6SSOT
标准包装: 1
输出隔离: 隔离
频率范围: 60kHz ~ 68kHz
输入电压: 7.5 V ~ 20 V
输出电压: 13.5V
工作温度: -40°C ~ 105°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: FAN6863RTYFSDKR
May 2011
FAN6863
Highly Integrated Green-Mode PWM Controller
Features
Description
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Low Standby Power: Under 0.1W
Low Startup Current: 8μA
Low Operating Current at Green Mode: 600μA
Peak-Current Mode Operation with Cycle-by-Cycle
Current Limiting
PWM Frequency Continuously Decreasing with
Burst Mode at Light Loads
V DD Over-Voltage Protection (OVP)
Constant Output Power Limit (Full AC Input Range)
Internal Latch Circuit (FAN6863L) for OVP, OTP
SENSE Pin Short-Circuit Protection (SSCP)
Fixed PWM Frequency (65KHz) with Frequency
Hopping
Feedback Open-Loop Protection: 60ms Delay
GATE Output Maximum Voltage Clamp: 13.5V
Soft-Start Time: 5ms
Soft Driving for EMI Improvement
Full Range Frequency Hopping
Internal OTP Sensor with Hysteresis
GATE Driving Capability: 400mA
A highly integrated PWM controller, FAN6863 provides
several features to enhance the performance of flyback
converters. To minimize standby power consumption, a
proprietary Green Mode provides off-time modulation to
continuously decrease the switching frequency under
light-load conditions. Under zero-load conditions, the
power supply enters Burst Mode, which completely
shuts off PWM output. Output restarts just before the
supply voltage drops below the UVLO lower limit. Green
Mode enables power supplies to meet international
power conservation requirements.
The FAN6863 is designed for SMPS and integrates a
frequency-hopping function that helps reduce EMI
emission of a power supply with minimum line filters.
The built-in synchronized slope compensation provides
proprietary sawtooth compensation for constant output
power limit over universal AC input range. The gate
output is clamped at 13.5V to protect the external
MOSFET from over-voltage damage.
Other protection functions include SENSE pin Short-
Circuit Protection (SSCP), V DD Over-Voltage Protection
(OVP), and Over-Temperature Protection (OTP). For
OTP, an external NTC thermistor can be applied to
sense the ambient temperature. When V DD OVP or OTP
is activated, an internal latch circuit latches off the
controller. Protection types shown in Table 1.
Table 1. Protection Type
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
Part
Number
FAN6863
OVP
Latch
OLP
A/R
OTP /
OTP2
Latch
SSCP
A/R
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Power Adapters
Open-Frame SMPS
FAN6863L
FAN6863R
Latch
A/R
Latch
A/R
Latch
A/R
A/R
A/R
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SMPS with Surge-Current Output, such as for
Printers, Scanners, Motor Drivers
Ordering Information
Part Number
FAN6863TY
FAN6863LTY
FAN6863RTY
Operating
Temperature Range
-40 to +105°C
Package
6-Lead, SuperSOT?-6, JEDEC M0-193,
1.6mm Wide
Packing Method
Tape & Reel
? 2011 Fairchild Semiconductor Corporation
FAN6863 ? Rev. 1.0.1
www.fairchildsemi.com
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