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AIC1573CS

更新时间： 2024-01-08 20:12:00
品牌 Logo 应用领域
沛亨 - AIC 稳压器控制器
页数 文件大小 规格书
19页 317K
描述
5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear Controller

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中文翻译

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AIC1573CS 技术参数

生命周期：Contact Manufacturer包装说明：,
Reach Compliance Code：compliant风险等级：5.77
Base Number Matches：1

AIC1573CS 数据手册

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AIC1573  
5-bit DAC, Synchronous PWM Power  
Regulator with Simple PWM Power Regulator,  
LDO And Linear Controller  
FEATURES  
DESCRIPTION  
The AIC1573 combines two PWM voltage mode  
n
n
l Compatible with HIP6020.  
l Provides 4 Regulated Voltages for Microprocessor  
Core, AGP Bus, Memory and GTL Bus Power.  
l TTL Compatible 5-bit Digital-to-Analog Core Output  
Voltage Selection. Range from 1.3V to 3.5V.  
0.1V Steps from 2.1V to 3.5V.  
controllers and two linear controllers as well as the  
monitoring and protection functions in this chip. One  
PWM controller regulates the microprocessor core  
voltage with a synchronous rectified buck converter.  
The second PWM controller provides AGP bus 1.5V  
or 3.3V power with a standard buck converter. Two  
linear controllers regulate power for the 1.5V GTL  
bus and 1.8V power for the chip set core voltage  
and/or cache memory circuits.  
0.05V Steps from 1.3V to 2.05V.  
l ±1.0% PWM Output Voltage for VCORE.  
l ±3% PWM Output Voltage for AGP Bus.  
l
±3.0% Reference Voltage for Chipset and/or Ca-  
che Memory and VGTL.  
An integrated 5 bit D/A converter that adjusts the  
microprocessor core voltage from 2.1V to 3.5V in  
0.1V increments and from 1.3V to 2.05V in 0.05V  
increments. The second PWM controller for AGP  
bus power is selectable by means of SELECT pin  
status for 1.5V or 3.3V with 3% accuracy. Two linear  
controllers drive with external N-channel MOSFETs  
to provide 1.5V±3% and fixed output voltage  
1.8V±3%.  
l Simple Voltage-Mode PWM Control with Built in  
Internal Compensation Networks.  
l N-Channel MOSFET Driver for PWM buck con-  
verters.  
l Linear Controller Drives Compatible with both N–  
Chanel MOSFET and NPN Bipolar Series Pass  
Transistor.  
l Operates from +3.3V, +5V and +12V Inputs.  
l Fast Transient Response.  
l Full 0% to 100% Duty Ratios.  
This chip monitors all the output voltages. Power  
Good signal is issued when the core voltage is  
within ±10% of the DAC setting and the other levels  
are above their under-voltage levels. Over-voltage  
protection for the core output uses the lower N-  
channel MOSFET to prevent output voltage above  
116% of the DAC setting.  
l Adjustable Current Limit without External Sense  
Resistor.  
l Microprocessor Core Voltage Protection against  
Upper MOSFET shorted to +5V.  
l Power Good Output Voltage Monitor.  
l Over-Voltage and Over-Current Fault Monitors.  
l 200KHz Free-Running Oscillator Programmable up  
to 700KHz.  
The PWM over-current function monitors the output  
current by using the voltage drop across the upper  
MOSFET’ s RDS(ON), eliminating the need for a cur-  
rent sensing resistor.  
APPLICATIONS  
n
l Full Motherboard Power Regulation for Computers.  
Analog Integrations Corporation  
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC  
www.analog.com.tw  
DS-1573-01 Sep 10, 01  
TEL: 886-3-5772500 FAX: 886-3-5772510  
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