LTC2912

1

2912fa

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Single UV/OV

Voltage Monitor

The LTC

supply undervoltage and overvoltage events. The VL and

VH monitor inputs include filtering to reject brief glitches,

thereby ensuring reliable reset operation without false or

noisy triggering. An adjustable timer defines the duration of

the overvoltage and undervoltage reset outputs which func-

tion independently. While the LTC2912 operates directly

coupled with low supply current demand allows operation

from higher voltages such as 12V, 24V or 48V.

Three output configurations 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

■

■

Available in 8-Lead ThinSOT

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

LTC2912-1

0.1μF

3.3V

10

100

1000

10000

0.1

10

100

1000

2912 G08

1

1