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AIC1569A 参数 Datasheet PDF下载

AIC1569A图片预览
型号: AIC1569A
PDF下载: 下载PDF文件 查看货源
内容描述: 5位DAC ,同步PWM功率调节器 [5-bit DAC, Synchronous PWM Power Regulator]
分类和应用: 调节器
文件页数/大小: 7 页 / 240 K
品牌: AIC [ ANALOG INTERGRATIONS CORPORATION ]
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AIC1569A  
5-bit DAC, Synchronous PWM Power Regulator  
FEATURES  
DESCRIPTION  
Compatible with HIP6004.  
The AIC1569A is a high power, high efficiency  
switching regulator controller optimized for high  
performance microprocessor applications. It is  
designed to drive dual N-channel MOSFETs in a  
standard synchronous buck topology. Featuring  
a digitally programmable switching regulator, the  
AIC1569A includes monitoring and protection  
capabilities in addition to all the essential  
synchronous PWM control functions.  
Simple Voltage-Mode PWM Control.  
Dual N-Channel MOSFET Synchronous Drive.  
Fast Transient Response.  
1% 5-Bit Digital-to-Analog Output Voltage.  
Adjustable Current Limit Without External  
Sense Resistor.  
Full 0% to 100% Duty Ratio.  
200KHz  
Free-Running  
Oscillator,  
Programmable up to 350KHz.  
Power-Good Output Voltage Monitor.  
The internal 5-bit Digital-to-Analog Converter  
(DAC) adjusts the output voltage from 2.0V to  
3.5V in 0.1V increments and 1.3V to 2.0V in  
0.05V increments. The precision reference and  
voltage-mode control can provide output  
regulation within 1% over temperature and line  
voltage shifts.  
APPLICATIONS  
Power Supply for Pentium® II, Power® and  
Alpha® Microprocessors.  
High-Power 5V to 3.xV DC/DC Regulators.  
Low-Voltage Distributed Power Supplies.  
The internal oscillator of the AIC1569A free-runs  
at 200KHz and can be adjusted up to 350KHz.  
The resulting PWM duty ratio ranges from 0% to  
100%. The error amplifier features an 11MHz  
bandwidth and 6V/µS slew rate, which enables  
high converter bandwidth for fast transient  
response.  
The AIC1569A provides adjustable over current  
and short circuit protections. It senses the output  
current across the on resistance of the upper N-  
channel MOSFET without an external low value  
sense resistor. It also monitors the output voltage  
with a window comparator and issues a power  
good signal when the output is within 10% of the  
rated output voltage.  
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC  
DS-1569A-00 TEL: 886-3-5772500 FAX: 886-3-5772510  
www.analog.com.tw  
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