LTC2912
1
2912fb
For more information www.linear.com/LTC2912
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Single UV/OV
Voltage Monitor
The LTC
®
2912 voltage monitor is designed to detect power
supply undervoltage and overvoltage events. The VL and
VH monitor inputs include filtering to reject brief glitches,
thereby ensuring reliable reset operation without false or
noisy triggering. An adjustable timer defines the duration
of the overvoltage and undervoltage reset outputs which
function independently. While the LTC2912 operates
directly from 2.3V to 6V supplies, an internal V
CC
shunt
regulator coupled with low supply current demand allows
operation from higher voltages such as 12V, 24V or 48V.
Three output configurations are available: the LTC2912‑1
has a latch control for the OV output; the LTC2912‑2
has an OV and UV output disable feature for margining
applications; the LTC2912‑3 is identical to the LTC2912‑1
but with a noninverting, OV output.
The LTC2912 provides a precise, versatile, space‑conscious
micropower solution for voltage monitoring.
n
Monitors Single Voltage
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Adjustable UV and OV Trip Values
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Guaranteed Threshold Accuracy: ±1.5%
n
Power Supply Glitch Immunity
n
Adjustable Reset Timeout with Timeout Disable
n
29µA Quiescent Current
n
Open‑Drain OV and UV Outputs
n
Guaranteed OV and UV for V
CC
≥ 1V
n
Available in 8‑Lead ThinSOT
TM
and (3mm × 2mm)
DFN Packages
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Desktop and Notebook Computers
n
Network Servers
n
Core, I/O Voltage Monitors
Single OV/UV Supply Monitor, 3.3V ±10% Tolerance Reset Time-Out Period vs Capacitance
1k
27.4k
VH
VL
GND TMR
SYSTEM
POWER
SUPPLY
OV
UV
2912 TA01a
LATCH
22nF
TIMEOUT = 200ms
4.53k
V
CC
LTC2912-1
0.1µF
3.3V
TMR PIN CAPACITANCE, C
TMR
(nF)
10
UOTO
100
1000
0.1 10 100 1000
2912 G08
1
1
L, LT , LT C , LTM , Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
