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LTC2908CTS8-B1#TRM

Description
IC mon six supply prec tsot23-8
CategoryPower/power management    The power supply circuit   
File Size221KB,18 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC2908CTS8-B1#TRM Overview

IC mon six supply prec tsot23-8

LTC2908CTS8-B1#TRM Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
Parts packaging codeSOT
package instructionTSSOP, TSSOP8,.1
Contacts8
Manufacturer packaging codeTS8
Reach Compliance Code_compli
ECCN codeEAR99
Is SamacsysN
Adjustable thresholdNO
JESD-30 codeR-PDSO-G8
JESD-609 codee0
Humidity sensitivity level1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.1
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
power supply3.3 V
Certification statusNot Qualified
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Threshold voltage nominal0.5,1.4,1.6,2.3,3
Maximum time at peak reflow temperatureNOT SPECIFIED
Base Number Matches1
LTC2908
Precision
Six Input Supply Monitor
FEATURES
n
n
DESCRIPTION
The LTC
®
2908 is a six input supply monitor for systems
requiring a precise and compact monitoring solution
for multiple supply voltages. The inputs can be shorted
together for monitoring systems with fewer than six
supply voltages, and the open drain
RST
output of two or
more LTC2908s can be wired-OR together for monitoring
systems with more than six supply voltages. The common
reset output remains low until all six inputs have been in
compliance for 200ms.
The LTC2908 features a tight 1.5% threshold accuracy over
the entire 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 as long as V1 and/or V2 is 0.5V or greater.
The LTC2908 also features adjustable inputs with a nominal
threshold level at 0.5V. This product provides a precise,
space-conscious, micropower and general purpose solu-
tion for any kind of system requiring supply monitors.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. *Patent pending.
n
n
n
n
n
n
Ultralow Voltage Reset: V
CC
= 0.5V Guaranteed*
Monitors Six Inputs Simultaneously:
5V, 3.3V, 2.5V, 1.8V, ADJ1, ADJ2 (LTC2908-A1)
3.3V, 2.5V, 1.8V, 1.5V, ADJ1, ADJ2 (LTC2908-B1)
2.5V, ADJ1, ADJ2, ADJ3, ADJ4, ADJ5 (LTC2908-C1)
Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage Overtemperature
Internal V
CC
Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay
Active Low Open-Drain
RST
Output
Low Profile (1mm) 8-Lead SOT-23 (ThinSOT™) and
Plastic (3mm
×
2mm) DFN Packages
APPLICATIONS
n
n
n
n
n
Network Servers
Wireless Base Stations
Optical Networking Systems
Multivoltage Systems
Desktop and Notebook Computers
TYPICAL APPLICATION
Six Supply Monitor with 5% Tolerance
(12V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V)
12V
DC/DC
DC/DC
DC/DC
DC/DC
DC/DC
3.3V
RST
Output Voltage vs V1
with 10k Pull-Up Resistor to V1
0.4
V3 = V4 = V
ADJ1
=
V
ADJ2
= V
ADJ3
=
V
ADJ4
= V
ADJ5
= GND
RST
OUTPUT VOLTAGE (V)
2.5V
1.8V
1.5V
1.2V
0.1μF 0.1μF
2.15M
100k
124k
100k
SYSTEM
0.3
V1 INPUT
0.2
V2 = GND
0.1
V2 = V1 (A1/B1)
0
0
0.2
0.4
V1 (V)
0.6
0.8
2908 TA01b
V1
V2 V3 V4
V
ADJ1
LTC2908-B1
GND
V
ADJ2
RST
2908 TA01a
2908fd
1
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