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參數(shù)資料
| 型號： | AS80M1801 |
| 廠商： | Alliance Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | EMI Reduction IC for Switching Power Supplies |
| 中文描述： | 電磁干擾降低集成電路開關電源 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 28K |
| 代理商： | AS80M1801 |
Alliance Semiconductor
AS80M1800/1801 Product Brief
2003 (c) Copyright Alliance Semconductor Corporation. All rights reserved.
January 2003
Key Features
Compatible with most PWMcontrollers
Works with both current mode and voltage mode
PWMcontrollers.
Input frequency ranges:
50 KHz to 400 KHz (
AS80M1800
)
400 KHz to 1 MHz (
AS80M1801
)
This is the input frequency range the device can
accommodate fromthe external PWMcontroller.
Wide input PWMduty cycle range of 10% to 90%
Supports an extremely wide range of line and load
regulation conditions.
Output drive current of 200 mA
Drives most popular power MOSFETs used in
SMPS designs.
Supply voltage range of 7 V to 20 V
Under voltage lockout
Spread spectrummodulation with adjustable spread
Output short circuit sense with adjustable level and
automatic recovery
No-load condition sense
Power savings feature
Frequency skip at no-load allows implementation
of Energy Star and other next generation power
savings modes
Loss of input detect
Protects SMPS fromcatastrophic failure by shut-
ting off the output driver if the input PWMsignal is
lost
Under voltage lock-out
Protects SMPS fromcatastrophic failure by shut-
ting off the output drive if the supply voltage drops
below input VCC range
Available in 8-pin SOIC package
Device Block Diagram
AS80M1800: 50 KHz to 400 KHz
AS80M1801: 400 KHz to 1 MHz
UVLO
SS
modulator
200 mA
buffer
Loss of
drive detect
Load monitor
&
recovery
Gate drive
Current sense
Current adjust
Modulation rate
Spread range
PWM_in
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相關代理商/技術參數(shù) |
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|---|---|
| AS80M2516A | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:dual phase lock loop clock chip |
| AS80SSTVF16857 | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48VR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
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