ML4821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 |
ML4821 |
| 參數(shù)屬性 | ML4821 封裝/外殼為20-SOIC（0.295"，7.50mm 寬）；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 AVER CURR 1MHZ 20SOIC |
| 功能描述 | Power Factor Controller |
| 封裝外殼 | 20-SOIC（0.295"，7.50mm 寬） |
| 文件大小 |
106.15 Kbytes |
| 頁面數(shù)量 |
12 頁 |
| 生產(chǎn)廠商 | FAIRCHILD |
| 中文名稱 | 仙童半導(dǎo)體 |
| 網(wǎng)址 | |
| 數(shù)據(jù)手冊 | |
| 更新時(shí)間 | 2026-1-19 20:00:00 |
| 人工找貨 | ML4821價(jià)格和庫存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
ML4821規(guī)格書詳情
General Description
The ML4821 provides complete control for a “boost” type power factor correction system using the average current sensing method. Special care has been taken in the design of the ML4821 to increase system noise immunity. The circuit includes a precision reference, gain modulator, average current error amplifier, output error amplifier, over-voltage protection comparator, shutdown logic, as well as a high current output. In addition, start-up is simplified by an under voltage lockout circuit.
In a typical application, the ML4821 controls the AC input current by adjusting the pulse width of the output MOSFET. This modulates the line current so that its shape conforms to the shape of the input voltage. The reference for the current regulator is a product of the sinusoidal line voltage times the output of the error amplifier which is regulating the output DC voltage. Average line voltage compensation is provided in the gain modulator to ensure constant loop gain over a wide input voltage range. This compensation includes a special “brown-out” control which reduces output power below 90V RMS input.
特性 Features
? Average current sensing for lowest possible harmonic
distortion
? Average line compensation with brown-out control
? Precision buffered 5V reference
? 1A peak current totem-pole output drive
? Overvoltage comparator eliminates output “runaway” due
to load removal
? Wide common mode range in current sense comparators
for better noise immunity
? Large oscillator amplitude for better noise immunity
? Output driver internally limited to 17V
? “Sleep mode” shutdown input
產(chǎn)品屬性
- 產(chǎn)品編號：
ML4821CS
- 制造商：
onsemi
- 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)：
1MHz
- 電壓 - 供電：
12V ~ 18V
- 工作溫度：
0°C ~ 70°C
- 安裝類型：
表面貼裝型
- 封裝/外殼：
20-SOIC（0.295"，7.50mm 寬）
- 供應(yīng)商器件封裝：
20-SOIC
- 描述：
IC PFC CTR AVER CURR 1MHZ 20SOIC
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ML |
22+ |
SOP20 |
100000 |
代理渠道/只做原裝/可含稅 |
詢價(jià) | ||
ML |
25+ |
SOP20 |
54658 |
百分百原裝現(xiàn)貨 實(shí)單必成 |
詢價(jià) | ||
onsemi |
25+ |
18-PDIP |
11580 |
正規(guī)渠道,免費(fèi)送樣。支持賬期,BOM一站式配齊 |
詢價(jià) | ||
FAIRCHILD |
24+ |
SOP20 |
5632 |
公司原廠原裝現(xiàn)貨假一罰十!特價(jià)出售!強(qiáng)勢庫存! |
詢價(jià) | ||
FATRCHI |
24+ |
SMD |
6980 |
原裝現(xiàn)貨,可開13%稅票 |
詢價(jià) | ||
FAIRCHILD/仙童 |
25+ |
DIP18 |
1550 |
全新原裝正品支持含稅 |
詢價(jià) | ||
MICROLINEAR |
NEW |
SMD |
11923 |
代理全系列銷售, 全新原裝正品,價(jià)格優(yōu)勢,長期供應(yīng),量大可訂 |
詢價(jià) | ||
ML |
25+ |
DIP-18 |
18000 |
原廠直接發(fā)貨進(jìn)口原裝 |
詢價(jià) | ||
FATRCHI |
25+ |
SMD |
4500 |
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售! |
詢價(jià) | ||
FAIRCILD |
22+ |
DIP-18 |
3000 |
原裝正品,支持實(shí)單 |
詢價(jià) |
