L4981A集成電路(IC)的PFC(功率因數(shù)校正)規(guī)格書PDF中文資料

廠商型號 |
L4981A |
參數(shù)屬性 | L4981A 封裝/外殼為20-DIP(0.300",7.62mm);包裝為卷帶(TR);類別為集成電路(IC)的PFC(功率因數(shù)校正);產(chǎn)品描述:IC PFC CTR AV CURR 100KHZ 20DIP |
功能描述 | POWER FACTOR CORRECTOR |
封裝外殼 | 20-DIP(0.300",7.62mm) |
文件大小 |
228.04 Kbytes |
頁面數(shù)量 |
17 頁 |
生產(chǎn)廠商 | STMicroelectronics |
企業(yè)簡稱 |
STMICROELECTRONICS【意法半導體】 |
中文名稱 | 意法半導體集團官網(wǎng) |
原廠標識 | ![]() |
數(shù)據(jù)手冊 | |
更新時間 | 2025-7-11 10:30:00 |
人工找貨 | L4981A價格和庫存,歡迎聯(lián)系客服免費人工找貨 |
相關(guān)芯片規(guī)格書
更多L4981A規(guī)格書詳情
L4981A屬于集成電路(IC)的PFC(功率因數(shù)校正)。由意法半導體集團制造生產(chǎn)的L4981APFC(功率因數(shù)校正)功率因數(shù)校正 (PFC) 是用于調(diào)整交流電路中的電壓和電流之間的相位角,使之趨近于零的半導體器件。不同模式包括平均電流、邊界導通、連續(xù)導通、臨界導通、電流控制式頻率折返、不連續(xù)和不連續(xù)導通,開關(guān)頻率從 6 kHz 至 1.7 MHz 可調(diào)。
DESCRIPTION
The L4981 I.C. provides the necessary features to achieve a very high power factor up to 0.99.
Realized in BCD 60II technology this power factor corrector (PFC) pre-regulator contains all the control functions for designing a high efficiency-mode power supply with sinusoidal line current con
sumption.
The L4981 can be easily used in systems with mains voltages between 85V to 265V without any
line switch. This new PFC offers the possibility to work at fixed frequency (L4981A) or modulated
frequency (L4981B) optimizing the size of the in put filter; both the operating frequency modes
working with an average current mode PWM controller, maintaining sinusoidal line current without
slope compensation.
■ CONTROL BOOST PWM UP TO 0.99P.F.
■ LIMIT LINE CURRENT DISTORTION TO < 5
■ UNIVERSAL INPUT MAINS
■ FEED FORWARD LINE AND LOAD REGULATION
■ AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY
■ HIGH CURRENT BIPOLAR AND DMOS TOTEM POLE OUTPUT
■ LOW START-UP CURRENT (0.3mA TYP.)
■ UNDER VOLTAGE LOCKOUT WITH HYSTERESIS AND PROGRAMMABLE TURN ON THRESHOLD
■ OVERVOLTAGE, OVERCURRENT PROTECTION
■ PRECISE 2 ON CHIP REFERENCE EXTERNALLY AVAILABLE
■ SOFT START
產(chǎn)品屬性
更多- 產(chǎn)品編號:
L4981A
- 制造商:
STMicroelectronics
- 類別:
集成電路(IC) > PFC(功率因數(shù)校正)
- 包裝:
卷帶(TR)
- 模式:
平均電流
- 頻率 - 開關(guān):
100kHz
- 電壓 - 供電:
14.5V ~ 19.5V
- 工作溫度:
-40°C ~ 125°C
- 安裝類型:
通孔
- 封裝/外殼:
20-DIP(0.300",7.62mm)
- 供應(yīng)商器件封裝:
20-DIP
- 描述:
IC PFC CTR AV CURR 100KHZ 20DIP
供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
ST |
22+ |
20DIP |
9000 |
原廠渠道,現(xiàn)貨配單 |
詢價 | ||
ST |
23+ |
7860 |
正品原裝貨價格低 |
詢價 | |||
ST |
24+ |
原廠封裝 |
65250 |
支持樣品,原裝現(xiàn)貨,提供技術(shù)支持! |
詢價 | ||
ST |
24+ |
DIP |
30000 |
原裝正品公司現(xiàn)貨,假一賠十! |
詢價 | ||
ST |
23+ |
DIP-20P |
8560 |
受權(quán)代理!全新原裝現(xiàn)貨特價熱賣! |
詢價 | ||
ST/意法 |
24+ |
DIP-20 |
39000 |
只做原裝進口現(xiàn)貨 |
詢價 | ||
ST |
24+ |
DIP |
5000 |
全現(xiàn)原裝公司現(xiàn)貨 |
詢價 | ||
ST |
DIP |
3200 |
原裝長期供貨! |
詢價 | |||
ST |
20+ |
DIP |
2860 |
原廠原裝正品價格優(yōu)惠公司現(xiàn)貨歡迎查詢 |
詢價 | ||
ST |
24+ |
DIP20 |
3629 |
原裝優(yōu)勢!房間現(xiàn)貨!歡迎來電! |
詢價 |