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參數資料
| 型號： | FSDM1265RBWDTU |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPS) |
| 中文描述： | 3.8 A SWITCHING REGULATOR, ZFM6 |
| 封裝： | TO-220F, 6 PIN |
| 文件頁數： | 3/20頁 |
| 文件大小： | 380K |
| 代理商： | FSDM1265RBWDTU |
FSDM1265RB
3
Pin Definitions
Pin Configuration
Figure 3. Pin Configuration (Top View)
Pin Number
Pin Name
Pin Function Description
1
Drain
This pin is the high voltage power Sense FET drain. It is designed to drive the
transformer directly.
This pin is the control ground and the Sense FET source.
This pin is the positive supply voltage input. During
startup
, the power is supplied
by an internal high voltage current source that is connected to the Vstr pin.
When Vcc reaches 12V, the internal high voltage current source is disabled and
the power is supplied from the auxiliary transformer winding.
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.
Once
the pin reaches
6.0V, the
overload
protection is activated resulting in
the
shutdown of the FPS
TM
.
2
GND
3
Vcc
4
Vfb
5
N.C
6
Vstr
This pin is connected directly to the high voltage DC link. At startup, the internal
high voltage current source supplies internal bias and charges the external ca-
pacitor that is connected to the Vcc pin. Once Vcc reaches 12V, the internal cur-
rent source is disabled.
6.Vstr
5.N.C.
4.Vfb
3.Vcc
2.GND
1.Drain
TO-220F-6L
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