LTC2995 반도체 회로 부품 판매점
Temperature Sensor and Dual Voltage Monitor
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 Linear |
FEATURES
n Monitors Temperature and Two Voltages
n Voltage Output Proportional to Temperature
n Adjustable Thresholds for Temperature and Voltage
n ±1°C Remote Temperature Accuracy
n ±2°C Internal Temperature Accuracy
n ±1.5% Voltage Threshold Accuracy
n 3.5ms Update Time
n 2.25V to 5.5V Supply Voltage
n Input Glitch Rejection
n Adjustable Reset Timeout
n 220μA Quiescent Current
n Open Drain Alert Outputs
n Available in 3mm × 3mm QFN Package
APPLICATIONS
n Network Servers
n Core, I/O Voltage Monitors
n Desktop and Notebook Computers
n Environmental Monitoring
LTC2995
Temperature Sensor and
Dual Voltage Monitor with
Alert Outputs
DESCRIPTION
The LTC®2995 is a high accuracy temperature sensor
and dual supply monitor. It converts the temperature of
an external diode sensor and/or its own die temperature
to an analog output voltage while rejecting errors due to
noise and series resistance. Two supply voltages and the
measured temperature are compared against upper and
lower limits set with resistive dividers. If a threshold is
exceeded, the device communicates an alert by pulling
low the correspondent open drain logic output.
The LTC2995 gives ±1°C accurate temperature results
using commonly available NPN or PNP transistors or
temperature diodes built into modern digital devices. Volt-
ages are monitored with 1.5% accuracy. A 1.8V reference
output simplifies threshold programming and can be used
as an ADC reference input.
The LTC2995 provides an accurate, low power solution for
temperature and voltage monitoring in a compact 3mm ×
www.DataSheet.net/
3mm QFN package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Dual OV/UV Supply and Single OT/UT Remote Temperature Monitor
2.5V
1.2V
194k
0.1μF
10.2k
45.3k 64.4k
10.2k
45.3k
VCC
PS
DS
VH1 LTC2995
D+
470pF
D–
VL1 4mV/K
VPTAT
VH2
TO2 OT T > 125°C
TO1 UT T < 75°C
VL2 OV +10%
UV –10%
VREF VT2 VT1 GND TMR
20k 20k 140k
5nF
ASIC
TEMPERATURE
SENSOR
SYSTEM
MONITOR
2995 TA01a
VPTAT vs Remote
Diode Temperature
1.8
1.6
1.4
1.2
1.0
0.8
–50 –25 0 25 50 75 100 125 150
REMOTE DIODE TEMPERATURE (°C)
2995 TA01b
2995f
1
Datasheet pdf - http://www.DataSheet4U.co.kr/
LTC2995
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
VCC .............................................................. –0.3V to 6V
TMR, D+, D–, DS, PS, VPTAT, VREF........ –0.3V to VCC + 0.3V
UV, OV, TO1, T02 .......................................... –0.3V to 6V
VH1, VL1, VH2, VL2, VT1, VT2..................... –0.3V to 6V
Operating Ambient Temperature Range
LTC2995C ................................................ 0°C to 70°C
LTC2995I .............................................–40°C to 85°C
LTC 2995H......................................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
20 19 18 17 16
VL1 1
15 UV
VH2 2
14 OV
VL2 3 21 13 TO2
VT2 4
12 T01
VT1 5
11 VREF
6 7 8 9 10
UD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC QFN
TJMAX = 150°C, θJA = 59°C/W
EXPOSED PAD PCB GROUND CONNECTED OPTIONAL
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2995CUD#PBF
LTC2995CUD#TRPBF LFQV
20-Lead (3mm × 3mm) Plastic QFN
0°C to 70°C
LTC2995IUD#PBF
LTC2995IUD#TRPBF
LFQV
20-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LTC2995HUD#PBF
LTC2995HUD#TRPBF LFQV
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20-Lead (3mm × 3mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VCC = 3.3V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VCC
UVLO
Supply Voltage
Supply Undervoltage Lockout Threshold
ICC Average Supply Current
Temperature Measurement
VCC Falling
l 2.25
5.5
l 1.7 1.9 2.1
l 220 300
V
V
μA
VREF Reference Voltage
LTC2995
LTC2995C
LTC2995I
LTC2995H
1.797 1.8 1.803
l 1.793 1.8 1.804
l 1.790 1.8 1.807
l 1.787 1.8 1.808
V
V
V
V
VREF Load Regulation
Remote Diode Sense Current
ILOAD = ±200μA
l
–8
±1.5 mV
–192 μA
2
2995f
Datasheet pdf - http://www.DataSheet4U.co.kr/
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제조업체: Linear
( linear )
LTC2995 sensor
데이터시트 다운로드 :
[ LTC2995.PDF ]
[ LTC2995 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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