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LTC2906CDDB

Description
Supervisory Circuits LTC2906 - Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input
CategoryPower/power management    The power supply circuit   
File Size192KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC2906CDDB Overview

Supervisory Circuits LTC2906 - Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input

LTC2906CDDB Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerADI
package instructionHVSON,
Reach Compliance Codenot_compliant
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-N8
JESD-609 codee0
length3 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Package shapeRECTANGULAR
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
Nominal supply voltage (Vsup)2.5 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width2 mm
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
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