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參數資料
| 型號： | FSDL321L |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPS TM) |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 55 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 3/20頁 |
| 文件大?。?/td> | 479K |
| 代理商： | FSDL321L |
FSDL0165RN
3
Pin Definitions
Pin Configuration
Figure 3. Pin Configuration (Top View)
Pin Number
1
Pin Name
GND
Pin Function Description
Sense FET source terminal on primary side and internal control ground.
Positive supply voltage input. Although connected to an auxiliary transform-
er 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 de-
vice power is supplied via the auxiliary transformer winding.
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 op-
tocoupler are typically connected externally. A feedback voltage of 6V trig-
gers over load protection (OLP). There is a time delay while charging
between 3V and 6V using an internal 5uA current source, which prevents
false triggering under transient conditions but still allows the protection
mechanism to operate under true overload conditions.
Pin to adjust the current limit of the Sense FET. The feedback 0.9mA current
source is diverted to the parallel combination of an internal 2.8k
resistor
and any external resistor to GND on this pin to determine the current limit.
If this pin is tied to Vcc or left floating, the typical current limit will be 1.2A.
This pin connects directly 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 disabled.
The Drain pin is designed to connect directly to the primary lead of the trans-
former and is capable of switching a maximum of 650V. Minimizing the
length of the trace connecting this pin to the transformer will decrease leak-
age inductance.
2
Vcc
3
Vfb
4
Ipk
5
Vstr
6, 7, 8
Drain
1
2
3
4
5
6
7
8
GND
Vcc
Vfb
Ipk
Vstr
Drain
Drain
Drain
8DIP
8LSOP
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FSDL321L_Q | 功能描述:電源開關 IC - 配電 FPS for DVDP/STB RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FSDLC01G-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC128-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC16G-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC256-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
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