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參數(shù)資料
| 型號： | FSL126HR |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.68 A SWITCHING CONTROLLER, 110 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | MS-001BA, DIP-8 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 963K |
| 代理商： | FSL126HR |
2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSL126HR Rev. 1.0.0
3
FSL126HR
—
Green
Mode
Fairchild
Power
Switch
(FPS)
Pin Configuration
Figure 3. Pin Configuration
Pin Definitions
Pin #
Name
Description
1
GND
Ground
. SenseFET source terminal on the 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 Figure 2). Once
VCC reaches the UVLO upper threshold (12V), the internal startup switch opens and device
power is supplied via the auxiliary transformer winding.
3
VFB
Feedback Voltage
. The non-inverting input to the PWM comparator, it has a 0.4mA current
source connected internally, while a capacitor and opto-coupler are typically connected
externally. There is a delay while charging external capacitor CFB from 2.4V to 6V using an
internal 5A current source. This delay prevents false triggering under transient conditions, but
still allows the protection mechanism to operate under true overload conditions.
4
IPK
Peak Current Limit
. Adjusts the peak current limit of the SenseFET. The feedback 0.4mA
current source is diverted to the parallel combination of an internal 6k resistor and any
external resistor to GND on this pin to determine the peak current limit.
5
VSTR
Startup
. Connected to the rectified AC line voltage source. At startup, the internal switch
supplies internal bias and charges an external storage capacitor placed between the VCC pin
and ground. Once VCC reaches 12V, the internal switch is opened.
6, 7, 8
Drain
Drain
. Designed to connect directly to the primary lead of the transformer and capable of
switching a maximum of 650V. Minimizing the length of the trace connecting these pins to the
transformer decreases leakage inductance.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FSL126MR | 功能描述:電流型 PWM 控制器 FPS FOR LOW POWER RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| FSL126MRT | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green-Mode Fairchild Power Switch (FPSa?￠) |
| FSL126MRTWDTU | 功能描述:電源開關 IC - 配電 6.2Ohms 1mA 50W 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 |
| FSL127H | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch |
| FSL127HNY | 功能描述:電源開關 IC - POE / LAN Green Mode Power Switch RoHS:否 制造商:Fairchild Semiconductor 開關數(shù)量:Single 開關配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時間（最大值）:13 ns 關閉時間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風格:Through Hole 封裝 / 箱體:TO-220F-6 |
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