- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375931 > FSDH0370RNB (FAIRCHILD SEMICONDUCTOR CORP) Green Mode Fairchild Power Switch (FPSTM) PDF資料下載
參數(shù)資料
| 型號(hào)： | FSDH0370RNB |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPSTM) |
| 中文描述： | 12 A SWITCHING REGULATOR, 108 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | MS-001BA, DIP-8 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大?。?/td> | 608K |
| 代理商： | FSDH0370RNB |
3
www.fairchildsemi.com
FSDH0170RNB/FSDH0270RNB/FSDH0370RNB Rev. 1.0.2
F
Pin Configuration
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin Number
Pin Name
Pin Function Description
1
GND
Sense FET source terminal on primary side and internal control ground.
2
Vcc
Positive supply voltage input. Although connected to an auxiliary transformer
winding, current is supplied from pin 5 (Vstr) via an internal switch during
startup (see Internal Block Diagram Section). It is not until Vcc reaches the
UVLO upper threshold (12V) that the internal start-up switch opens and device
power is supplied via the auxiliary transformer winding.
3
Vfb
The feedback voltage pin is the non-inverting input to the PWM comparator.
It has a 0.9mA current source connected internally while a capacitor and
optocoupler are typically connected externally. A feedback voltage of 6V
triggers overload protection (OLP). There is a time delay while charging
external capacitor Cfb 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.
4
Ipk
This pin adjusts the peak current limit of the Sense FET. The 0.9mA feedback
current source is diverted to the parallel combination of an internal 2.8k
Ω
resistor and any external resistor to GND on this pin. This determines the
peak current limit. If this pin is tied to Vcc or left floating, the typical peak
current limit will be 0.8A (FSDH0170RNB), 0.9A (FSDH0270RNB), or
1.1A (FSDH0370RNB).
5
Vstr
This pin connects to the rectified AC line voltage source. At start-up the
internal switch supplies internal bias and charges an external storage
capacitor placed between the Vcc pin and ground. Once the Vcc reaches
12V, the internal switch is opened.
6, 7, 8
Drain
The drain pins are designed to connect directly to the primary lead of the
transformer and are capable of switching a maximum of 700V. Minimizing the
length of the trace connecting these pins to the transformer will decrease
leakage inductance.
1
2
3
4
5
6
7
8
GND
Vcc
Vfb
Ipk
Vstr
Drain
Drain
Drain
8DIP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FSDH0265RL | Green Mode Fairchild Power Switch (FPSTM) |
| FSDH0265RN | Green Mode Fairchild Power Switch (FPSTM) |
| FSDH321 | Green Mode Fairchild Power Switch (FPSTM) |
| FSDH321L | Green Mode Fairchild Power Switch (FPS TM) |
| FSDL0165RL | Green Mode Fairchild Power Switch (FPSTM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FSDH0565 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPSTM) |
| FSDH321 | 功能描述:電源開關(guān) IC - 配電 FPS for DVDP/STB RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FSDH321_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch |
| FSDH321L | 功能描述:電源開關(guān) IC - 配電 FPS for DVDP/STB RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FSDH321LX | 制造商:Fairchild Semiconductor Corporation 功能描述:Power Switch 2A 8-Pin LSOP |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。