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參數(shù)資料
| 型號(hào)： | AIC1341 |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | High Performance, Triple-Output, Auto-Tracking Combo Controller |
| 中文描述： | 高性能，三輸出，自動(dòng)跟蹤組合控制器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 231K |
| 代理商： | AIC1341 |
AIC1341
High Performance, Triple-Output, Auto-
Tracking Combo Controller
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1341-00 May 24, 01
TEL: 886-3-5772500
FAX: 886-3-5772510
1
n
FEATURES
l
Provide Triple Accurate Regulated Voltages
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Optimized Voltage-Mode PWM Control
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Dual N-Channel MOSFET Synchronous Drivers
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Fast Transient Response
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Adjustable Over Current Protection using R
DS(ON)
.
No External Current Sense Resistor Required.
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Programmable Softstart Function
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200KHz Free-Running Oscillator
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Robust Outputs Auto-Tracking Characteristics
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Sink and Source Capabilities with External Circuit
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APPLICATIONS
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Advanced PC Mboards
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Information PCs
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Servers and Workstations
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Internet Appliances
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PC Add-On Cards
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DDR Termination
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GENERAL DESCRIPTION
The AIC1341 combines a synchronous voltage
mode PWM controller with two linear controllers
as well as the monitoring and protection functions
in this chip. The PWM controller regulates the
output voltage with a synchronous rectified step-
down converter. The built-in N-Channel MOSFET
drivers also help to simplify the design of step-
down converter. It is able to power CPUs, GPUs,
memories, chipsets and multi-voltage applications.
The PWM controller features over current protec-
tion using R
DS(ON)
. It improves efficiency and saves
cost, as there is no expensive current sense resis-
tor required.
Two built-in adjustable linear controllers drive an
external MOSFETs to form two linear regulators
that regulates power for multiple system I/O. Out-
put voltage of both linear regulators can also be
adjusted by means of the external resistor divider.
Both linear regulators feature current limit. For a
system I/O requires current less than 500mA, the
AIC1340 is recommended for saving one external
MOSFET.
The programmable soft-start design provodes a
controlled output voltage rise, which limits the cur-
rent rate during power on time.
The shutdown function is also provided for dis-
abling the combo controller.
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