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LTC2907IDDB#TRM

Description
Processor Supervisor 1 Open Drain 8-Pin DFN EP T/R
File Size194KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC2907IDDB#TRM Overview

Processor Supervisor 1 Open Drain 8-Pin DFN EP T/R

LTC2907IDDB#TRM Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
Number of Supervisors1
Maximum Reset Active Time (ms)260
Output DriverOpen Drain
Power Fail DetectionNo
Watchdog TimerNo
Manual ResetNo
Chip Enable SignalsNo
Battery Backup SwitchingYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTape and Reel
TypePower Supply Monitor
Pin Count8
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed8
Lead ShapeNo Lead
LTC2906/LTC2907
Precision Dual Supply Monitors
with One Pin-Selectable Threshold
and One Adjustable Input
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
Monitors Two Inputs Simultaneously
Three Threshold Selections for 5V, 3.3V or 2.5V
Supplies
Low Voltage Adjustable Input (0.5V)
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy:
±1.5%
of
Monitored Voltage Over Temperature
Internal V
CC
Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay (LTC2906 Only)
Adjustable Reset Time Delay (LTC2907 Only)
Open Drain RST Output
Guaranteed RST for V1
1V or V
CC
1V
Low Profile (1mm) SOT-23 (ThinSOT
TM
) and
Plastic (3mm
×
2mm) DFN Packages
Desktop and Notebook Computers
Handheld Devices
Network Servers
Core, I/O Monitor
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC
®
2906/LTC2907 are dual supply monitors in-
tended for systems with multiple supply voltages. The
dual supply monitors have a common reset output with
delay (200ms for the LTC2906 and adjustable using an
external capacitor for the LTC2907). These products pro-
vide a precise, space-conscious and micropower solution
for supply monitoring.
The LTC2906/LTC2907 feature a tight 1.5% threshold
accuracy over the whole operating temperature range
and glitch immunity to ensure reliable reset operation
without false triggering. The open drain RST output state
is guaranteed to be in the correct state for V1 and/or V
CC
down to 1V.
The LTC2906/LTC2907 also feature one adjustable input
with a nominal threshold level at 0.5V, another input with
three possible input threshold levels, and three supply
tolerances for possible margining. These features provide
versatility for any kind of system requiring dual supply
monitors. Two three-state input pins program the thresh-
old and tolerance level without requiring any external
components.
APPLICATIO S
s
s
s
s
TYPICAL APPLICATIO
Dual Supply Monitor with Adjustable Tolerance (2.5V, 0.8V)
DC/DC
CONVERTER
2.5V
0.8V
49.9k
V1
LTC2907
0.1µF
V
CC
S1
TOL
TMR
22nF
GND
RST
V
ADJ
0.1µF
100k
SYSTEM
LOGIC
Supply Selection Programming
V1
5.0
3.3
2.5
S1
V1
OPEN
GND
Tolerance Programming
TOLERANCE
5%
7.5%
29067 TA01
TOLERANCE = 10%
10%
U
TOL
V1
OPEN
GND
29067f
U
U
1
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