参数资料
| 型号： | FSFM261N |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC PWM/SENSEFET FPS 8-DIP |
| 标准包装： | 50 |
| 系列： | FPS™ |
| 输出隔离： | 隔离 |
| 频率范围： | 61kHz ~ 73kHz |
| 输入电压： | 9 V ~ 21 V |
| 输出电压： | 700V |
| 功率（瓦特）： | 35W |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
Pin Configuration
GND
Drain
V CC
FB
I LIM
8-DIP
Drain
Drain
V STR
FSFM260 Rev.1.0.0
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6,7,8
Name
GND
V CC
FB
I LIM
V STR
Drain
Description
Ground . This pin is the control ground and the SenseFET source.
Power Supply . This pin is the positive supply input, providing internal operating current for
both startup and steady-state operation.
Feedback . This pin is internally connected to the inverting input of the PWM comparator. The
collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should
be placed between this pin and GND. If the voltage of this pin reaches 6V, the overload pro-
tection triggers, which shuts down the FPS.
Peak Current Limit . Adjusts the peak current limit of the Sense FET. The feedback 0.9mA
current source is diverted to the parallel combination of an internal 2.8k Ω resistor and any ex-
ternal resistor to GND on this pin to determine the peak current limit.
Startup . This pin is connected directly, or through a resistor, to the high-voltage DC link. At
startup, the internal high-voltage current source supplies internal bias and charges the exter-
nal capacitor connected to the V CC pin. Once V CC reaches 12V, the internal current source is
disabled. It is not recommended to connect V STR and drain together.
SenseFET Drain . High-voltage power SenseFET drain connection.
? 2009 Fairchild Semiconductor Corporation
FSFM260N / FSFM261N / FSFM300N ? Rev. 1.0.1
4
www.fairchildsemi.com
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