ML4805中文資料MICRO-LINEAR數(shù)據(jù)手冊PDF規(guī)格書
ML4805規(guī)格書詳情
GENERAL DESCRIPTION
The ML4805 is a controller for power factor corrected, switched mode power supplies. Similar to the ML4801, the ML4805 may be used for voltage mode operation. Key features of this combined PFC and PWM controller are low start-up and operating currents. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC1000-2-3 specifications. The ML4805 includes circuits for the implementation of a leading edge, average current “boost” type power factor correction and a trailing edge pulse width modulator.
The PFC frequency of the ML4805 is automatically set at half that of the PWM frequency generated by the internal oscillator. This technique allows the user to design with smaller output components while maintaining the optimum operating frequency for the PFC. An over voltage comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection.
FEATURES
■ Internally synchronized PFC and PWM in one IC
■ Low start-up current (200μA typ.)
■ Low operating current (5.5mA typ.)
■ Low total harmonic distortion
■ Reduces ripple current in the storage capacitor
between the PFC and PWM sections
■ Average current continuous boost leading edge PFC
■ High efficiency trailing edge PWM optimized for voltage mode operation
■ Current fed gain modulator for improved noise immunity
■ Brown-out control, overvoltage protection, UVLO, and soft start
產(chǎn)品屬性
- 型號:
ML4805
- 制造商:
MICRO-LINEAR
- 制造商全稱:
MICRO-LINEAR
- 功能描述:
Variable Feedforward PFC/PWM Controller Combo
供應商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
FAIRCHILD/仙童 |
22+ |
DIP |
354000 |
詢價 | |||
ML |
24+ |
DIP-16 |
4650 |
詢價 | |||
原廠 |
DIP |
8650 |
一級代理 原裝正品假一罰十價格優(yōu)勢長期供貨 |
詢價 | |||
ON/安森美 |
NA |
5523 |
原裝現(xiàn)貨支持BOM配單服務 |
詢價 | |||
ON/安森美 |
23+ |
NA |
25630 |
原裝正品 |
詢價 | ||
MICROLINEAR |
23+ |
DIP |
11923 |
詢價 | |||
ML |
1802+ |
DIP18 |
6528 |
只做原裝正品現(xiàn)貨,或訂貨假一賠十! |
詢價 | ||
ON/安森美 |
21+ |
NA |
12820 |
只做原裝,質(zhì)量保證 |
詢價 | ||
ML |
24+ |
DIP |
12320 |
原裝正品 力挺實單 |
詢價 | ||
ON/安森美 |
22+ |
NA |
99181 |
鄭重承諾只做原裝進口貨 |
詢價 |