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| 型号： | LTC2914HDHC-1 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 5 X 3 MM, PLASTIC, MO-229WJED-1, DFN-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 211K |
| 代理商： | LTC2914HDHC-1 |
LTC2914
1
2914fa
Quad UV/OV
Positive/Negative
Voltage Monitor
n Desktop and Notebook Computers
n Network Servers
n Core, I/O Voltage Monitors
n Monitors Four Voltages Simultaneously
n Adjustable UV and OV Trip Values
n Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage over Temperature
n Input Glitch Rejection
n Monitors up to Two Negative Voltages
n Buffered 1V Reference Output
n Adjustable Reset Timeout with Timeout Disable
n 62μA Quiescent Current
n Open-Drain OV and UV Outputs
n Guaranteed OV and UV for VCC ≥ 1V
n Available in 16-Lead SSOP and 16-Lead
(5mm × 3mm) DFN Packages
Quad UV/OV Supply Monitor,10% Tolerance, 5V, 3.3V, 2.5V, 1.8V
The LTC2914 is a quad input voltage monitor intended for
monitoring multiple voltages in a variety of applications.
Dual inputs for each monitored voltage allow monitoring
four separate undervoltage (UV) conditions and four
separate overvoltage (OV) conditions. All monitors share a
common undervoltage output and a common overvoltage
output. The LTC2914-1 has latching capability for the
overvoltage output. The LTC2914-2 has functionality to
disable both the overvoltage and undervoltage outputs.
Polarity selection and a buffered reference allow monitoring
up to two separate negative voltages. A three-state input pin
allows setting the polarity of two inputs without requiring
any external components. Glitch ltering ensures reliable
reset operation without false or noisy triggering.
The LTC2914 provides a precise, versatile, space-con-
scious, micropower solution for voltage monitoring.
Input Threshold Voltage
vs Temperature
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
VH1
VCC
LTC2914-1
SYSTEM
2914 TA01a
0.1μF
GND
TMR
VL1
VL2
VH2
REF
VL3
VH3
OV
UV
LATCH
SEL
VL4
CTMR
22nF
TIMEOUT = 200ms
VH4
1k
4.53k
12.4k
1k
19.6k
4.53k
27.4k
1k
44.2k
5V
3.3V
2.5V
1.8V
1k
4.53k
P0WER
SUPPLIES
TEMPERATURE (°C)
–50
0.495
THRESHOLD
VOLTAGE,
V
OUT
(V)
0.497
0.499
0.501
–25
0
25
50
2914 TA01b
75
0.503
0.505
0.496
0.498
0.500
0.502
0.504
100
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