參數(shù)資料
型號(hào)： AIC1570CS
廠商： Analog Integrations Corporation
英文描述： 5-bit DAC, Synchronous PWM Power Regulator with LDO and Linear Controller
中文描述： 5位DAC，同步PWM功率調(diào)節(jié)器的穩(wěn)壓器和線性控制器
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 418K
代理商： AIC1570CS
AIC1570
5-bit DAC, Synchronous PWM Power Regulator
with LDO and Linear Controller
DS-1570-00
www.analog.com.tw
1
FEATURES
Compatible with HIP6018.
Provides 3 Regulated Voltages for Micro-
processor Core, Clock and GTL Power.
Simple Voltage-Mode PWM Control.
Dual N-Channel MOSFET Synchronous Driver.
Operates from +3.3V, +5V and +12V Inputs.
Fast Transient Response.
Full 0% to 100% Duty Ratios.
±1.0% Output Voltage for VCORE and
±
2.0%
Output Voltage Reference for VCLK and VGTL.
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.
0.05V Steps from 1.3V to 2.05V.
Adjustable Current Limit without External Sense
Resistor.
Microprocessor Core Voltage Protection against
Shorted MOSFET.
Power Good Output Voltage Monitor.
Over-Voltage and Over-Current Fault Monitors.
200KHz Free-Running Oscillator Programmable
up to 350KHz.
APPLICATIONS
Full
Computers.
Motherboard
Power
Regulation
for
DESCRIPTION
The AIC1570 combines a synchronous voltage
mode controller with a low dropout linear regulator
and a linear controller as well as the monitoring and
protection functions in this chip. The PWM
controller regulates the microprocessor core
voltage with a synchronous rectified buck converter.
The linear controller regulates power for the GTL
bus and the linear regulator provides power for the
clock driver circuit.
An integrated 5 bit D/A converter that adjusts the
core PWM output voltage from 2.1V to 3.5V in 0.1V
increments and from 1.3V to 2.05V in 0.05V
increments. The linear regulator uses an internal
driver device to provide 2.5V±2.5%. The linear
controller drives with an external N-channel
MOSEFET to provide 1.5V±2.5%.
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
115% of the DAC setting.
The PWM over-current function monitors the output
current by using the voltage drop across the upper
MOSFET’s R
DS(on)
, eliminating the need for a
current sensing resistor.
相關(guān)PDF資料
PDF描述
AIC1570 5-bit DAC, Synchronous PWM Power Regulator with LDO and Linear Controller
AIC1571CS 5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers
AIC1571 5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers
AIC1573 5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear Controller
AIC1573CS 5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AIC1571 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers
AIC1571CS 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers
AIC1573 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear Controller
AIC1573CS 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear Controller
AIC1574 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers
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