LTC2965
100V Micropower Single
Voltage Monitor
FEATURES DESCRIPTION
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Wide Operating Range: 3.5V to 100V The LTC 2965 is a low current, high voltage single chan-
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Wide Monitoring Range: 3.5V to 98V nel voltage monitor. Internal high value resistors sense
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Quiescent Current: 7A the input monitor pin providing a compact and low power
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Adjustable Threshold Range solution for voltage monitoring. Two comparator reference
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Internal High Value Resistive Dividers inputs (INH and INL) are included to allow configuration of
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1.4% (Max) Threshold Accuracy Over Temperature a high and low threshold using an external resistive divider
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Polarity Selection biased from the on-chip reference. A range selection pin
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100V Rated Outputs is provided to set the internal resistive divider for 10x or
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Selectable Built-In Hysteresis 40x scaling. The thresholds are scaled according to the
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16-Lead MS and 8-Lead 3mm 3mm DFN Packages 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
APPLICATIONS
is 100V capable and includes a 500k pull-up resistor to
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Portable Equipment
an internal supply.
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Battery-Powered Equipment
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
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Telecom Systems Devices, Inc. All other trademarks are the property of their respective owners.
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Automotive/Industrial Electronics
TYPICAL APPLICATION
Undervoltage Monitor
24V
5V
V MONITOR RANGE RANGE SELECTION
IN
V
IN 3.5V to 24.5V 10x
100k
REF
14V to 98V 40x
200k
OUT
INH 24V UNDERVOLTAGE
THRESHOLD
5V
91k LTC2965
Supply Current vs V
CONFIGURATION IN
SYS
INL
12
909k
10
PS RS GND
8
6
2965 TA01a
4
POLARITY AND RANGE SELECTION
45C
RANGE = 40x 25C
2
OUT = LOW 90C
I = 0A 125C
RISING THRESHOLD 20.0V REF
0
FALLING THRESHOLD 18.2V
0 20 40 60 80 100
HYSTERESIS 1.8V
V (V)
RANGE 10x IN
2965 TA01b
2965fc
1
For more information www.linear.com/LTC2965
I (A)
VINLTC2965
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Input Voltages Operating Ambient Temperature Range
V ....................................................... 0.3V to 140V LTC2965C ................................................ 0C to 70C
IN
PS, RS ..................................................... 0.3V to 6V LTC2965I .............................................40C to 85C
INH, INL ................................................... 0.3V to 6V LTC2965H .......................................... 40C to 125C
Output Voltages Storage Temperature Range .................. 65C to 150C
OUT ..................................................... 0.3V to 140V Lead Temperature (Soldering, 10 sec) ...................300C
Average Currents
V ...................................................................20mA
IN
OUT ...................................................................5mA
REF ....................................................................5mA
INH, INL .............................................................1mA
PIN CONFIGURATION
TOP VIEW
TOP VIEW
V 1 16 OUT
IN
V 1 8 OUT
IN
NC 2 15 NC
NC 3 14 NC
REF 2 7 GND
9
NC 4 13 NC
GND
INH RS
3 6
NC 5 12 NC
REF 6 11 GND
INL 4 5 PS
INH 7 10 RS
INL 8 9 PS
MS PACKAGE
DD PACKAGE
16-LEAD PLASTIC MSOP
8-LEAD (3mm 3mm) PLASTIC DFN
T = 150C, = 43C/W T = 150C, = 120C/W
JMAX JA JMAX JA
EXPOSED PAD (PIN 9) PCB GND CONNECTION OPTIONAL
(