LTC2910

1

2910fb

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Octal Positive/Negative

Voltage Monitor

for monitoring multiple voltages in a variety of applica-

tions. Each input has a nominal 0.5V threshold, featuring

1.5% tight threshold accuracy over the entire operating

temperature range. Glitch filtering ensures reliable reset

operation without false or noisy triggering.

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

requiring any external components.

The LTC2910 provides a precise, versatile, space-con-

scious, micropower solution for voltage monitoring.

Octal Supply Monitor, 10% Tolerance, 12V, 5V (x2), 3.3V (x2), 2.5V, 1.8V, 1.2V

■

8 Low Voltage Adjustable Inputs (0.5V)

■

Guaranteed Threshold Accuracy: ±1.5V

■

Input Glitch Rejection

■

Pin Selectable Input Polarity Allows

Negative and OV Monitoring

■

Buffered 1V Reference Output

■

Adjustable Reset Timeout with Timeout Disable

■

70µA Quiescent Current

■

Open Drain RST and ⎯R⎯S⎯T Outputs

■

■

Available in 16-Lead SSOP and 16-Lead

(5mm × 3mm) DFN Packages

■

Desktop and Notebook Computers

■

Network Servers

■

Core, I/O Voltage Monitors

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Typical Transient Duration

vs Comparator Overdrive

RST

RST

GND

V8

V7

V6

V5

V4

V3

V2

V1

LTC2910

TMR

1nF

TIMEOUT = 8.5ms

DIS

SEL

226k

0.1

µF

88.7k

54.9k

39.2k

24.9k

12.7k

88.7k

54.9k

11k

11k

11k

11k

11k

11k

11k

11k

12V

5V

3.3V

2.5V

1.8V

1.2V

5V

3.3V

2910 TA01

POWER

SUPPLIES

SYSTEM

COMPARATOR OVERDRIVE PAST THRESHOLD (%)

0.1

400

500

600

700

1

10

100

2910 TD01b

300

200

100

0

RESET OCCURS

ABOVE CURVE