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| 型号： | FSQ0170RNA |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC SWIT PWM GREEN OVP UVLO 8DIP |
| 产品变化通告： | Passivation Layer Change 07/Dec/2007 |
| 标准包装： | 50 |
| 输出隔离： | 隔离 |
| 频率范围： | 92kHz ~ 108kHz |
| 输入电压： | 8 V ~ 20 V |
| 输出电压： | 700V |
| 功率（瓦特）： | 20W |
| 工作温度： | 25°C ~ 140°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 产品目录页面： | 1222 (CN2011-ZH PDF) |
Pin Configuration
GND
D
V CC
FB
I PK
8-DIP
D
D
V str
FSQ0x70RNA Rev. 1.00
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
GND
V CC
FB
I PK
V str
Drain
Drain
Drain
Description
Ground. SenseFET source terminal on primary side and internal control
ground.
Power Supply. Positive supply voltage input. Although connected to an aux-
iliary transformer winding, current is supplied from pin 5 (V str ) via an internal
switch during start-up, see Figure 2. It is not until V CC reaches the UVLO upper
threshold (12V) that the internal start-up switch opens and device power is
supplied via the auxiliary transformer winding.
Feedback. The feedback voltage pin is the non-inverting input to the PWM
comparator. It has a 0.9mA current source connected internally while a capac-
itor and opto-coupler are typically connected externally. A feedback voltage of
6V triggers overload protection (OLP). There is a time delay while charging ex-
ternal capacitor C FB from 3V to 6V using an internal 5μA current source. This
time delay prevents false triggering under transient conditions, but still allows
the protection mechanism to operate under true overload conditions.
Peak Current Limit. This pin adjusts the peak current limit of the SenseFET.
The 0.9mA feedback current source is diverted to the parallel combination of
an internal 2.8k ? resistor and any external resistor to GND on this pin. This
determines the peak current limit. If this pin is tied to V CC or left floating, the
typical peak current limit is 0.8A (FSQ0170RNA), 0.9A (FSQ0270RNA).
Start-up. This pin connects to the rectified AC line voltage source. At start-up,
the internal switch supplies internal bias and charges an external storage ca-
pacitor placed between the V CC pin and ground. Once the V CC reaches 12V,
the internal switch is opened.
SenseFET drain. High-voltage power SenseFET drain connection.
SenseFET drain. High-voltage power SenseFET drain connection.
SenseFET drain. High-voltage power SenseFET drain connection.
? 2006 Fairchild Semiconductor Corporation
FSQ0170RNA, FSQ0270RNA Rev. 1.0.5
3
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FSQ0170RNA_07 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPS?) |
| FSQ0170RNA_11 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPSa?￠) |
| FSQ0265 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPS⑩) for Valley Switching Converter |
| FSQ0265RL | 功能描述:开关变换器、稳压器与控制器 SMPS Power switch RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| FSQ0265RLX | 功能描述:开关变换器、稳压器与控制器 SMPS Power switch 2A, 650V RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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