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LTC2917CMS-B1#PBF

Description
IC SUPERVISOR W/TIMER 10MSOP
CategoryPower/power management    The power supply circuit   
File Size156KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC2917CMS-B1#PBF Overview

IC SUPERVISOR W/TIMER 10MSOP

LTC2917CMS-B1#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeMSOP
package instructionTSSOP, TSSOP10,.19,20
Contacts10
Manufacturer packaging codeMS
Reach Compliance Codecompliant
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeS-PDSO-G10
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals10
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP10,.19,20
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply2.5 V
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply current (Isup)0.08 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1.5 V
Nominal supply voltage (Vsup)2.5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3 mm
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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