LTC2910_15 Datasheet, PDF (1/16 Pages) Linear Technology – Octal Positive/Negative Voltage Monitor

FEATURES
■ _{8 Low Voltage Adjustable Inputs (0.5V)}
■ _{Guaranteed Threshold Accuracy: ±1.5%}
■ _{Input Glitch Rejection}
■ _{Pin Selectable Input Polarity Allows}
Negative and OV Monitoring
■ _{Buffered 1V Reference Output}
■ _{Adjustable Reset Timeout with Timeout Disable}
■ _{50μA Quiescent Current}
■ _{Open Drain RST and RST Outputs}
■ _{Guaranteed RST and RST for VCC ≥ 1V}
■ _{Available in 16-Lead SSOP and 16-Lead}
(5mm × 3mm) DFN Packages
APPLICATIONS
■ _{Desktop and Notebook Computers}
■ _{Network Servers}
■ _{Core, I/O Voltage Monitors}
LTC2910
Octal Positive/Negative
Voltage Monitor
DESCRIPTION
The LTC^®2910 is an octal input voltage monitor intended
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.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Octal Supply Monitor, 10% Tolerance, 12V, 5V (x2), 3.3V (x2), 2.5V, 1.8V, 1.2V
12V
5V
3.3V
2.5V
POWER
SUPPLIES ^1.8V
1.2V
5V
3.3V
54.9k 88.7k 12.7k 24.9k 39.2k 54.9k 88.7k 226k
11k
11k
11k
11k
11k
11k
11k
11k
SYSTEM
V8
V7
V6
V5
V4
LTC2910
GND
TMR
DIS
1nF
TIMEOUT = 8.5ms
V3
V2
V1
V_CC
RST
RST
SEL
0.1μF
2910 TA01
Typical Transient Duration
vs Comparator Overdrive
700
600
500
RESET OCCURS
ABOVE CURVE
400
300
200
100
V_CC = 2.3V
V_CC = 6V
0
0.1
1
10
100
COMPARATOR OVERDRIVE PAST THRESHOLD (%)
2910 TA01b
2910fc
1