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ADM1073ARU

更新时间: 2024-02-13 23:52:01
品牌 Logo 应用领域
亚德诺 - ADI 电源电路电源管理电路光电二极管信息通信管理控制器
页数 文件大小 规格书
24页 305K
描述
Full-Feature −48 V Hot Swap Controller

ADM1073ARU 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:TSSOP
包装说明:TSSOP,针数:14
Reach Compliance Code:unknown风险等级:5.15
Is Samacsys:N其他特性:OPERATES ON NEGATIVE OPERATING VOLTAGE RANGE OF -200 TO -18 WITH -48 NOM VOLTAGE
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PDSO-G14JESD-609代码:e3
长度:5 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:14最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
座面最大高度:1.2 mm表面贴装:YES
技术:BICMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:4.4 mm
Base Number Matches:1

ADM1073ARU 数据手册

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Full-Feature −48 V Hot Swap Controller  
ADM1073  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Precision inrush linear current limit  
Soft start inrush current limit profiling  
Precision maximum on-time in current limit  
Maximum on-time modulated by FET drain voltage for  
additional SOA protection  
Adjustable PWM retry scheme and multiple device cascading  
capability for charging large capacitive loads  
Limited number of PWM cycles for FET SOA protection under  
short circuit condition  
Ability to configure device as continuous autoretry with a  
5-second cooling period  
Shunt regulator topology to allow very large transient input  
supplies  
V
SPLYGD  
IN  
PWRGD  
DRAIN  
V
AND  
CC  
REFERENCE  
FOLDBACK  
AND PWRGD  
GENERATOR  
OVERVOLTAGE  
DETECTOR  
OV  
UV  
V
IN  
UNDERVOLTAGE  
DETECTOR  
50µA  
100mV(MAX)  
GATE  
SOFT START  
CONTROL  
SS  
SENSE  
tON CONTROL  
TIMER  
FAULT TIMER  
AND CONTROL  
V
EE  
Separate UV and OV pins for programming allowable input  
supply window  
5 SECOND  
SHUTDOWN  
PWM  
TIMEOUT  
OSCILLATOR  
Programmable OV hysteresis using current source into pin  
when supply is high  
SHDN  
RESTART  
LATCHED  
Programmable UV hysteresis using current sink from pin  
when supply is low  
Figure 1.  
PWRGD output indicates when capacitor charging complete  
APPLICATIONS  
SPLYGD output indicates when supply is within  
valid window  
LATCHED output indicates the end of the retry cycle before  
load capacitance is charged  
Central office switching  
Telecommunication and data communication equipment  
−48 V distributed power systems  
Negative power supply control  
High availability servers  
SHDN input for user-commanded shutdown  
RESTART input for user-triggered 5-second shutdown and  
autorestart— virtual card reseat  
−48 V power supply modules  
Disk arrays  
GENERAL DESCRIPTION  
The ADM1073 is a full-feature, negative voltage, hot swap  
controller that allows boards to be safely inserted and removed  
from a live −48 V backplane. The part provides precise and  
robust current limiting, and protection against both transient  
and nontransient short circuits in overvoltage and undervoltage  
conditions. The ADM1073 can operate from a negative voltage  
of −18 V to −80 V and can tolerate transient voltages of up to  
−200 V.  
A built-in soft start function allows control of the inrush  
current profile by an external capacitor on the soft start (SS)  
pin.  
An external capacitor on the TIMER pin determines the time  
for which the FET gate is controlled to be high when maximum  
inrush current flows. The ADM1073 employs a limited consec-  
utive retry scheme, whereby, if the load capacitance is not fully  
charged within one attempt, the FET gate is pulled low and  
retries after a cooling period.  
Inrush current is limited to a programmable value by control-  
ling the gate drive of an external N-channel FET. The maximum  
(continued on Page 3)  
current limit is set by the choice of the sense resistor, RSENSE  
.
Rev. 0  
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 owners.  
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  
© 2004 Analog Devices, Inc. All rights reserved.  

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