参数资料
型号: FSQ0565RQ
厂商: FAIRCHILD SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: 3.36 A SWITCHING CONTROLLER, 75.8 kHz SWITCHING FREQ-MAX, ZFM6
封装: ROHS COMPLIANT, TO-220F, 6 PIN
文件页数: 18/23页
文件大小: 2856K
代理商: FSQ0565RQ
F
S
Q0
565RS
/R
Q
Green-Mo
de
F
arichild
P
o
wer
Switch
(FPS)
fo
rQu
asi-Resonant
Operation
2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSQ0565RS/RQ Rev. 1.0.3
4
Pin Configuration
Figure 4. Pin Configuration (Top View)
Pin Definitions
Pin #
Name
Description
1Drain
SenseFET Drain. High-voltage power SenseFET drain connection.
2GND
Ground. This pin is the control ground and the SenseFET source.
3VCC
Power Supply. This pin is the positive supply input, providing internal operating current for
both startup and steady-state operation.
4FB
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
protection triggers, which shuts down the FPS.
5
Sync
Sync. This pin is internally connected to the sync-detect comparator for quasi-resonant switch-
ing. In normal quasi-resonant operation, the threshold of the sync comparator is 1.2V/1.0V.
6Vstr
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 VCC pin. Once VCC reaches 12V, the internal current source is
disabled. It is not recommended to connect Vstr and Drain together.
6. VSTR
5. Sync
4. FB
3. VCC
2. GND
1. Drain
FSQ0565 Rev.00
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