參數(shù)資料
型號(hào)： LTC2912HDDB-3#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-8
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 168K
代理商： LTC2912HDDB-3#PBF
LTC2912
1
2912fa
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 ltering to reject brief glitches,
thereby ensuring reliable reset operation without false or
noisy triggering. An adjustable timer denes the duration of
the overvoltage and undervoltage reset outputs which func-
tion independently. While the LTC2912 operates directly
from 2.3V to 6V supplies, an internal VCC shunt regulator
coupled with low supply current demand allows operation
from higher voltages such as 12V, 24V or 48V.
Three output congurations 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.
■
Monitors Single Voltage
■
Adjustable UV and OV Trip Values
■
Guaranteed Threshold Accuracy: ±1.5%
■
Power Supply Glitch Immunity
■
Adjustable Reset Timeout with Timeout Disable
■
29μA Quiescent Current
■
Open-Drain OV and UV Outputs
■
Guaranteed OV and UV for VCC ≥ 1V
■
Available in 8-Lead ThinSOT
TM and (3mm × 2mm)
DFN Packages
■
Desktop and Notebook Computers
■
Network Servers
■
Core, I/O Voltage Monitors
Single OV/UV Supply Monitor, 3.3V ±10% Tolerance
Reset Time-Out Period vs Capacitance
, LT, LTC and LTM 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.
1k
27.4k
VH
VL
GND
TMR
SYSTEM
POWER
SUPPLY
OV
UV
2912 TA01a
LATCH
22nF
TIMEOUT = 200ms
4.53k
VCC
LTC2912-1
0.1μF
3.3V
TMR PIN CAPACITANCE, CTMR (nF)
10
UV/OV
TIMEOUT
PERIOD,
t
UOTO
(ms)
100
1000
10000
0.1
10
100
1000
2912 G08
1
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