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參數資料
| 型號： | FAN6921MRMY |
| 廠商： | Fairchild Semiconductor |
| 文件頁數： | 4/24頁 |
| 文件大?。?/td> | 1210K |
| 描述： | IC CTLR PFC/FLYBACK 16-SOICN |
| 標準包裝： | 2,500 |
| 模式： | 臨界傳導（CRM） |
| 電流 - 啟動： | 10µA |
| 電源電壓： | 8.5 V ~ 25 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOIC N |
| 包裝： | 帶卷 (TR) |
?2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6921MR Rev. 1.0.4
4
Marking Information
Figure 3. Marking Diagram
Pin Configuration
Figure 4. Pin Configuration
Pin Definitions
Pin # Name Description
1
RANGE
RANGE pins impedance changes according to VIN pin voltage level. When the input voltage
detected by VIN pin is lower than a threshold voltage, it sets to high impedance; whereas it sets
to low impedance if input voltage is high level.
2
COMP
Output pin of the error amplifier. It is a transconductance type error amplifier for PFC output
voltage feedback. Proprietary multi-vector current is built-in to this amplifier. Therefore the
compensation for PFC voltage feedback loop allows a simple compensation circuit between this
pin and GND.
3
INV
Inverting input of the error amplifier. This pin is used to receive PFC voltage level by a voltage
divider and provides PFC output over- and under-voltage protections.
4
CSPFC
Input to the PFC over-current protection comparator that provides cycle-by-cycle current limiting
protection. When the sensed voltage across the PFC current sensing resistor reaches the internal
threshold (0.82 V typical), the PFC switch is turned off to activate cycle-by-cycle current limiting.
5
CSPWM
Input to the comparator of the PWM over-current protection and performs PWM current-mode
control with FB pin voltage. A resistor is used to sense the switching current of PWM switch and
the sensing voltage is applied to the CSPWM pin for the cycle-by-cycle current limit, current-
mode control, and high / low line over-power compensation according to DET pin source current
during PWM t
ON
time.
Continued on the following page&
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