LTC2913 datasheet(1/20 Pages) LINER

部品番号	LTC2913

部品情報	Temperature Sensor and Dual Voltage Monitor

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メーカー	LINER [Linear Technology]

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LTC2995

1

2995f

TYPICAL APPLICATION

FEATURES

DESCRIPTION

Temperature Sensor and

Dual Voltage Monitor with

Alert Outputs

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 ×

3mm QFN package.

Dual OV/UV Supply and Single OT/UT Remote Temperature Monitor

APPLICATIONS

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

n Network Servers

n Core, I/O Voltage Monitors

n Desktop and Notebook Computers

n Environmental Monitoring

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.

VPTAT vs Remote

Diode Temperature

REMOTE DIODE TEMPERATURE (°C)

–50

0.8

1.0

1.2

1.4

050

100

150

2995 TA01b

1.6

1.8

–25

25

75

125

VCC

PS

DS

VH1

VL1

VH2

VL2

VPTAT

TO2

TO1

OV

UV

D+

D–

LTC2995

2.5V

1.2V

0.1μF

64.4k

10.2k

45.3k

2995 TA01a

VT1

VT2

GND

TMR

VREF

20k

140k

470pF

TEMPERATURE

SENSOR

ASIC

SYSTEM

MONITOR

OT T > 125°C

4mV/K

UT T < 75°C

+10%

–10%

45.3k

10.2k

194k

5nF

同様の部品番号 - LTC2913

メーカー	部品番号	データシート	部品情報
Linear Technology	LTC2913	281Kb / 12P	Dual UV/OV Voltage Monitor
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