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X40020S14I-C

Description
2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14
Categoryaccessories   
File Size349KB,24 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
Download Datasheet View All

X40020S14I-C Overview

2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14

®
X40020, X40021
Data Sheet
May 17, 2006
FN8112.1
Dual Voltage Monitor with Integrated CPU
Supervisor and System Battery Switch
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
TRIP2
programmable down to 0.9V
—Adjust low voltage reset threshold voltages
using special programming sequence
—Reset signal valid to V
CC
= 1V
—Monitor two voltages or detect power fail
• Battery switch backup
• V
OUT
: 5mA to 50mA from V
CC
; 250µA from V
BATT
• 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)
• Debounced manual reset input
• Low power CMOS
—25µA typical standby current, watchdog on
—6µA typical standby current, watchdog off
—1µA battery current in backup mode
• 400kHz 2-wire interface
• 2.7V to 5.5V power supply operation
• Available packages
—14-lead SOIC, TSSOP
• Monitor voltages: 5V to 1.6V
• Memory security
• Pb-free plus anneal available (RoHS compliant)
APPLICATIONS
• Communications equipment
—Routers, hubs, switches
—Disk arrays
• Industrial systems
—Process control
—Intelligent instrumentation
• Computer systems
—Desktop computers
—Network servers
X40020, X40021
Standard V
TRIP1
Level Standard V
TRIP2
, Level Suffix
4.6V (±1%)
2.9V(±1.7%)
-A
4.6V (±1%)
2.6V (±2%)
-B
2.9V(±1.7%)
1.6V (±3%)
-C
See “Ordering Information” for more details
For Custom Settings, call Intersil.
DESCRIPTION
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.
Applying voltage to V
CC
activates the power-on reset
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.
BLOCK DIAGRAM
V2MON
+
V2 Monitor
Logic
-
V
OUT
V
TRIP2
V2FAIL
SDA
WP
Data
Register
Command
Decode Test
& Control
Logic
Fault Detection
Register
Status
Register
Watchdog
and
Reset Logic
V
OUT
WDO
MR
RESET
X40020
RESET
X40021
SCL
V
OUT
V
CC
(V1MON)
+
V
CC
Monitor
Logic
-
V
TRIP1
Power-on,
Manual Reset
Low Voltage
Reset
Generation
BATT-ON
V
OUT
V
BATT
System
Battery
Switch
LOWLINE
1
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
All other trademarks mentioned are the property of their respective owners.
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