LTC2914

1

2914fc

For more information www.linear.com/LTC2914

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

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 LTC®2914 is a quad input voltage monitor intended for

monitoring multiple voltages in a variety of applications.

Dual inputs for each monitored voltage allow monitor-

ing four separate undervoltage (UV) conditions and four

separate overvoltage (OV) conditions. All monitors share

a common undervoltage output and a common overvolt-

age 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 monitor-

ing up to two separate negative voltages. A three-state

input pin allows setting the polarity of two inputs without

requiringanyexternalcomponents.Glitchfilteringensures

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

VH1

LTC2914-1

SYSTEM

2914 TA01a

0.1μF

GND

TMR

VL1

VL2

VH2

REF

VL3

VH3

OV

UV

LATCH

SEL

VL4

22nF

TIMEOUT = 200ms

VH4

1k

4.53k

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

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

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.