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LTC2917CDDB-B1#TRPBF

Description
Processor Supervisor 1 Open Drain Automotive 10-Pin DFN EP T/R
File Size160KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC2917CDDB-B1#TRPBF Overview

Processor Supervisor 1 Open Drain Automotive 10-Pin DFN EP T/R

LTC2917CDDB-B1#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
Number of Supervisors1
Maximum Reset Active Time (ms)260
Output DriverOpen Drain
Monitored Voltage (V)1.8
Minimum Operating Supply Voltage (V)0.8
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Current (uA)80
Power Fail DetectionNo
Watchdog TimerYes
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 Count10
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed10
Lead ShapeNo Lead
FEATURES
LTC2917/LTC2918
Voltage Supervisor with
27 Selectable Thresholds
and Watchdog Timer
DESCRIPTION
The LTC
®
2917-A/LTC2917-B and LTC2918-A/LTC2918-B
are low voltage single-supply monitors with selectable
thresholds and an adjustable watchdog timer. The parts
operate from 1.5V to 5.5V and consume a quiescent cur-
rent of only 30μA.
Two three state inputs select one of nine internally pro-
grammed thresholds without the need for external resistors.
For the LTC2917, an additional three state input determines
the tolerance (–5%, –10%, –15%). The tolerance for the
LTC2918 is fixed at –5%. Threshold accuracy is guaranteed
at ±1.5% over the entire operating temperature range.
Glitch filtering ensures reliable reset operation without
false triggering.
The reset timeout and the watchdog timeout may be set
with no external components, or adjusted using an exter-
nal capacitor. A windowed watchdog feature is available
for high-reliability applications (B1 versions). A separate
manual reset input on the LTC2918-A/LTC2918-B allows
a simple push button interface.
Operation to 125°C makes the LTC2917-A/LTC2917-B
and LTC2918-A/LTC2918-B suitable for automotive
applications.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
9 Selectable Supply Voltages
12V, 5V, 3.3V, 2.5V, 1.8V
1.5V, 1.2V, 1V, +ADJ (0.5V)
3 Selectable Tolerances
–5%, –10%, –15% (LTC2917)
Manual Reset Input (LTC2918)
1.5V to 5.5V Supply Operation
Adjustable Watchdog Timeout
Windowed Watchdog Timeout for Higher Reliability
Applications (LTC2917-B, LTC2918-B)
6.2V Shunt Regulator for High Voltage Operation
Guaranteed Operation to 125°C
Guaranteed Threshold Accuracy: ±1.5%
Low Quiescent Current: 30μA Typical
Power Supply Glitch Immunity
Guaranteed
RST
for V
CC
≥ 0.8V
10-Lead MSOP Packages and (3mm
×
2mm) DFN
Packages
APPLICATIONS
Handheld Devices
Cell Phone Base Stations
Automotive Control Systems
Network Servers
Optical Networking Systems
TYPICAL APPLICATION
1.8V Supply Monitor with Manual
Reset and Internal Timers Selected
1.8V
Monitor Selection Table
NOMINAL VOLTAGE
12V
SEL1
V
CC
V
CC
V
CC
Open
Open
Open
GND
GND
GND
SEL2
V
CC
Open
GND
V
CC
Open
GND
V
CC
Open
GND
29178fb
0.1μF
V
CC
LTC2918-A
VM
RT
WT
MR
GND
RST
WDI
SEL1
SEL2
10k
5V
3.3V
μP
RST
I/O
29178 TA01
2.5V
1.8V
1.5V
1.2V
1V
ADJ (0.5V)
t
WDU
= 1.6s
t
RST
= 200ms
1
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