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LTC2911CTS8-1#TRMPBF

Description
Processor Supervisor 3.086V/4.675V/Adj 3 Open Drain 8-Pin TSOT-23 T/R
File Size234KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC2911CTS8-1#TRMPBF Overview

Processor Supervisor 3.086V/4.675V/Adj 3 Open Drain 8-Pin TSOT-23 T/R

LTC2911CTS8-1#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
Number of Supervisors3
Maximum Reset Active Time (ms)280
Output DriverOpen Drain
Minimum Reset Threshold Voltage (V)Adj|4.6|3.036
Typical Reset Threshold Voltage (V)Adj|4.675|3.086
Maximum Reset Threshold Voltage (V)Adj|4.75|3.135
Monitored Voltage (V)Adj|5|3.3
Maximum Supply Current (uA)30(Typ)
Power Fail DetectionNo
Watchdog TimerNo
Manual ResetNo
Chip Enable SignalsNo
Battery Backup SwitchingNo
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
PackagingTape and Reel
TypePower Supply Monitor
Pin Count8
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed8
Lead ShapeGull-wing
FEATURES
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LTC2911
Precision Triple Supply
Monitor with Power-Fail
Comparator
DESCRIPTION
The LTC
®
2911 is a low power, high accuracy triple supply
monitor with a power-fail comparator. Reset timeout may
be selected with an external capacitor or set to an internally
generated 200ms.
The V1 pin monitors a 3.3V supply. The V2 pin monitors a
5V, 2.5V, 1.8V, 1.2V or adjustable supply. A third adjustable
input has a nominal 0.5V threshold allowing a resistive
divider to configure its threshold. All three comparators
feature a tight 1.5% threshold accuracy over the entire
operating temperature range while a glitch filter ensures
reliable reset operation.
A spare comparator can be configured to provide early
warning of a low voltage condition. It causes the
PFO
output
to pull low when the voltage of the PFI input falls below 0.5V,
allowing the power-fail threshold to be configured with
a resistive divider. A latch feature on the TMR pin allows
the
RST
output to be latched to prevent system resets,
simplifying margin testing.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6949965, 7292076.
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Ultralow Voltage Reset: V
CC
= 0.5V Guaranteed
Monitors Three Inputs Simultaneously:
3.3V, 5V, ADJ (LTC2911-1)
3.3V, 2.5V, ADJ (LTC2911-2)
3.3V, 1.8V, ADJ (LTC2911-3)
3.3V, 1.2V, ADJ (LTC2911-4)
3.3V, ADJ, ADJ (LTC2911-5)
±1.5% Threshold Accuracy
Power-Fail Monitor
RST
State Can Be Held for Margining
Low Supply Current: 30µA Typical
Input Glitch Immunity
Adjustable Reset Timeout Period
Selectable Internal Timeout Saves Components
Space Saving 8-Lead TSOT-23 and 3mm
×
2mm DFN
Packages
APPLICATIONS
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Network Servers
Desktop and Notebook Computers
Automotive and Industrial Electronics
TYPICAL APPLICATION
RST
Output Voltage With 10k Pull-Up to V1
3.3V
2.5V
DC/DC
CONVERTER 1.0V
TMR
V1
76.8k
RESET
LOBAT
10k
V
RST
(V)
SYSTEM
LOGIC
6
5
4
3
2
1
t
RST
= 200ms
2911 TA01a
V1 = V2
RST
V2
PFO
LTC2911-2
ADJ
PFI
+
Li-Ion
BATTERY
STACK
576k
100k
100k
GND
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
V1 (V)
2911 TA01b
2911f
1
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