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ADM1201AUJ PDF预览

ADM1201AUJ

更新时间： 2024-09-17 14:49:27
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
6页 1698K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, MO-193BA, TSOT-8, Power Management Circuit

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ADM1201AUJ 数据手册

 浏览型号ADM1201AUJ的Datasheet PDF文件第2页浏览型号ADM1201AUJ的Datasheet PDF文件第3页浏览型号ADM1201AUJ的Datasheet PDF文件第4页浏览型号ADM1201AUJ的Datasheet PDF文件第5页浏览型号ADM1201AUJ的Datasheet PDF文件第6页 
TM  
Simple Tracker  
with Emergency Shutdown  
Preliminary Technical Data  
ADM1201  
FEATURES  
Functional Block Diagram  
Enables Power Supply Tracking of multiple supplies  
Up/Down Tracking limits Supply Differences to ~100mV  
Capacitor Adjustable Slew Rate  
Q
1
V
V
IN  
OUT  
2.7V - 16V  
On Board Charge Pump Fully enhances FET  
Emergency Shutdown Feature  
V
CC  
V
CHARGE  
PUMP  
FET  
In-Built Power Fail Detector Circuitry  
Packaged in tiny 8-Lead TSOT Package  
UP/DOWN  
STOP  
GATE  
FET  
DRIVER  
UP  
DETECTOR  
/ DOWN  
LOGIC  
APPLICATIONS  
Multi-Voltage Supply Rail Tracker  
Telecoms and Datacoms Systems  
Multi voltage Network Processors  
Multivoltage FPGAs, ASICs, DSPs  
PC/Server Applications  
C
SLEW  
SLEW RATE  
CONTROL  
V
OUTFB  
R
1
PFI  
POWER FAIL  
DETECTOR  
C
SLEW  
ADM1201  
R
2
GND  
GENERAL DESCRIPTION  
The ADM1201 is a cascadable Simple Tracker TM device which  
ensures that voltage rails track up and ramp within ~100mV of  
each other in multi supply systems. Any number of these  
devices can be cascaded to form a multi supply tracking  
solution. The ADM1201 requires 2.7V to 16.5V on its Vcc pin  
to operate. An on-board charge pump generates a high voltage  
GATE drive to fully enhance FETs in the power path.  
Applications Diagram  
Q
1
5VIN  
5VOUT  
ADM1201  
V
cc  
GATE  
20nF  
POWER ON/OFF  
UP/DOWN  
STOP  
R
1
V
OUT  
PFI  
The Slew Rate of the ramp up and ramp down is adjustable via  
an external capacitor on the CSLEW pin and can be programmed  
from 100V/s to 1000V/s. When multiple devices are cascaded  
the CSLEW pin of each subsequent device should be tied to the  
output rail of the previous device to ensure that supply will  
track up and down with the previous supply.  
EMERGENCY  
SHUTDOWN  
C
SLEW  
R
GND  
2
Q2  
3.3VIN  
3.3VOUT  
ADM1201  
The ADM1201 features an Up/Downb pin for external control  
of the Up and Down tracking. A low-to-high transition on the  
this input will initiate tracking power up sequence., while a  
high-to-low will initiate a tracking down of the supply rails. A  
STOPb pin is also available- a high-to-low on this pin will  
initiate an emergency fast shutdown of the supply..  
V
cc  
GATE  
20nF  
UP/DOWN  
STOP  
R
V
3
OUT  
PFI  
C
SLEW  
GND  
R
4
Q3  
Power Fail Detector circuitry is also present. A resistor divider  
on the PFI input will dictate what level the ADM1201 registers a  
power fail on that supply. When a power fail is detected the  
internal Power Fail Comparator will pull the STOPb pin down  
which will shut down the output immediately. STOPb pins of  
multiple ADM1201 devices may be tied together so that a fault  
on any supply rail will cause all devices to go into emergency  
shutdown.  
2.8VIN  
2.8VOUT  
ADM1201  
V
cc  
GATE  
20nF  
UP/DOWN  
STOP  
R
5
V
OUT  
PFI  
C
SLEW  
GND  
R
6
The ADM1201 is available in a tiny 8-pin TSOT package.  
Rev. PrG  
Information furnished by Analog Devices is believed to be accurate and reliable.  
However, no responsibility is assumed by Analog Devices for its use, nor for any  
infringements of patents or other rights of third parties that may result from its  
use. Specifications subject to change without notice. No license is granted by  
implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registered trademarks are the property of their respective  
companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
Analog Devices, Inc. All rights reserved.  
2005  
123456

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