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X40020_06

更新时间： 2024-02-29 02:58:07
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电池开关监控
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24页 356K
描述
Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch

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X40020_06 数据手册

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X40020, X40021  
®
Data Sheet  
May 17, 2006  
FN8112.1  
APPLICATIONS  
Dual Voltage Monitor with Integrated CPU  
Supervisor and System Battery Switch  
• Communications equipment  
—Routers, hubs, switches  
—Disk arrays  
• Industrial systems  
—Process control  
—Intelligent instrumentation  
• Computer systems  
—Desktop computers  
—Network servers  
FEATURES  
• Dual voltage detection and reset assertion  
—Three standard reset threshold settings  
(4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V)  
—V  
programmable down to 0.9V  
TRIP2  
—Adjust low voltage reset threshold voltages  
using special programming sequence  
—Reset signal valid to V = 1V  
CC  
X40020, X40021  
—Monitor two voltages or detect power fail  
• Battery switch backup  
Standard VTRIP1 Level Standard VTRIP2, Level Suffix  
• V  
: 5mA to 50mA from V ; 250µA from V  
OUT  
CC BATT  
4.6V (±1%)  
4.6V (±1%)  
2.9V(±1.7%)  
2.9V(±1.7%)  
2.6V (±2%)  
1.6V (±3%)  
-A  
-B  
-C  
• Fault detection register  
• Selectable power-on reset timeout  
(0.05s, 0.2s, 0.4s, 0.8s)  
• Selectable watchdog timer interval  
(25ms, 200ms, 1.4s, off)  
See “Ordering Information” for more details  
For Custom Settings, call Intersil.  
• Debounced manual reset input  
• Low power CMOS  
DESCRIPTION  
—25µA typical standby current, watchdog on  
—6µA typical standby current, watchdog off  
—1µA battery current in backup mode  
• 400kHz 2-wire interface  
The X40020 combines power-on reset control, watch-  
dog timer, supply voltage supervision, and secondary  
supervision, and manual reset, in one package. This  
combination lowers system cost, reduces board space  
requirements, and increases reliability.  
• 2.7V to 5.5V power supply operation  
• Available packages  
—14-lead SOIC, TSSOP  
Applying voltage to V  
activates the power-on reset  
CC  
• Monitor voltages: 5V to 1.6V  
circuit which holds RESET/RESET active for a period of  
time. This allows the power supply and system oscilla-  
tor to stabilize before the processor can execute code.  
• Memory security  
• Pb-free plus anneal available (RoHS compliant)  
BLOCK DIAGRAM  
V
OUT  
+
-
V2FAIL  
WDO  
V2MON  
V
TRIP2  
V2 Monitor  
Logic  
Watchdog  
and  
Reset Logic  
Fault Detection  
Register  
Data  
Register  
SDA  
WP  
V
OUT  
Status  
Register  
Command  
Decode Test  
& Control  
Logic  
MR  
RESET  
X40020  
SCL  
Power-on,  
Manual Reset  
Low Voltage  
Reset  
V
OUT  
RESET  
X40021  
+
-
V
CC  
V
TRIP1  
Generation  
(V1MON)  
V
Monitor  
CC  
Logic  
BATT-ON  
LOWLINE  
System  
Battery  
Switch  
V
OUT  
V
BATT  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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X40020S14-A RENESAS

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X40020S14-B INTERSIL

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X40020S14-B XICOR

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 		Power Supply Management Circuit, Adjustable, 2 Channel, CMOS, PDSO14, PLASTIC, SOIC-14
X40020S14-BT1 RENESAS

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X40020S14-C INTERSIL

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 		Dual Voltage Monitor with Intergrated CPU Supervisor and System Battery Switch
X40020S14-C XICOR

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 		Power Supply Management Circuit, Adjustable, 2 Channel, CMOS, PDSO14, PLASTIC, SOIC-14
X40020S14-C RENESAS

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 		2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, PLASTIC, SOIC-14

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