LTC2965_15 Datasheet, PDF (1/18 Pages) Linear Technology – 100V Micropower Single Voltage Monitor

LTC2965
100V Micropower Single
Voltage Monitor
Features
n _{Wide Operating Range: 3.5V to 100V}
n _{Wide Monitoring Range: 3.5V to 98V}
n _{Quiescent Current: 7µA}
n _{Adjustable Threshold Range}
n _{Internal High Value Resistive Dividers}
n _{±1.4% (Max) Threshold Accuracy Over Temperature}
n _{Polarity Selection}
n _{100V Rated Outputs}
n _{Selectable Built-In Hysteresis}
n _{16-Lead MS and 8-Lead 3mm × 3mm DFN Packages}
Applications
n _{Portable Equipment}
n _{Battery-Powered Equipment}
n _{Telecom Systems}
n _{Automotive/Industrial Electronics}
Description
The LTC^®2965 is a low current, high voltage single chan-
nel voltage monitor. Internal high value resistors sense
the input monitor pin providing a compact and low power
solution for voltage monitoring. Two comparator reference
inputs (INH and INL) are included to allow configuration of
a high and low threshold using an external resistive divider
biased from the on-chip reference. A range selection pin
is provided to set the internal resistive divider for 10x or
40x scaling. The thresholds are scaled according to the
range selection settings. Additionally, either INH or INL
can be grounded to enable built-in hysteresis. Polarity
selection pin allows the output to be inverted. The output
is 100V capable and includes a 500k pull-up resistor to
an internal supply.
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their respective owners.
Typical Application
THRESHOLD
CONFIGURATION
Undervoltage Monitor
24V
5V
V_IN
REF
100k
200k
INH
OUT
24V UNDERVOLTAGE
91k
LTC2965
5V
SYS
INL
909k
PS RS GND
POLARITY AND RANGE SELECTION
RISING THRESHOLD
FALLING THRESHOLD
HYSTERESIS
RANGE
20.0V
18.2V
1.8V
10x
2965 TA01a
V_IN MONITOR RANGE
3.5V to 24.5V
14V to 98V
RANGE SELECTION
10x
40x
Supply Current vs V_IN
12
10
8
6
4
2 ^{RANGE = 40x}
OUT = LOW
I_REF = 0µA
0
0
20
40
60
V_IN (V)
–45°C
25°C
90°C
125°C
80
100
2965 TA01b
For more information www.linear.com/LTC2965
2965f
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