LTC2960
36V Nano-Current
Two-Input Voltage Monitor
Fea T Descrip T
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850nA Quiescent Current
The LTC 2960 is a nano-current, high voltage two-input
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Operating Range: 2.5V < V < 36V
voltage monitor, ideally suited for multicell battery ap-
CC
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1.5% (Max) Accuracy Over Temperature
plications. External resistive dividers configure custom
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Adjustable Reset Threshold
comparator thresholds. The supervisory circuit monitors
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Wide Temperature Range (40C to 125C)
the ADJ input and pulls the RST output low when the input
+
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Adjustable IN /IN Threshold
drops below threshold. A reset timeout period delays the
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Manual Reset Input
return of the RST output to a high state when the input
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Compact 2mm 2mm 8-lead DFN and
rises above the threshold. The spare comparator allows
TSOT-23 (ThinSOT) Packages
voltage conditions to be detected with either a non-inverting
+
input, IN (LTC2960-1/LTC2960-3) or an inverting input,
a T
IN (LTC2960-2/LTC2960-4). A manual reset (MR) input
is provided for external activation of the reset output.
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Portable Equipment
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Battery Powered Equipment
Other options provided on the LTC2960-1/LTC2960-2 in-
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Security Systems
clude a reset timeout period select pin, RT, to select between
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Automotive Systems
15ms or 200ms reset timeout periods. The LTC2960-3/
LTC2960-4 have a fixed 200ms reset timeout period. The
LTC2960 Option Table
RST and OUT outputs are available with active pull-up cir-
Option Inputs Reset Timeout Period Output Type
+
cuits to an output logic supply pin (LTC2960-3/LTC2960-4)
LTC2960-1 ADJ/IN 15ms/200ms 36V Open-Drain
LTC2960-2 ADJ/IN 15ms/200ms 36V Open-Drain or 36V open-drain outputs (LTC2960-1/LTC2960-2).
+
LTC2960-3 ADJ/IN 200ms Active Pull-Up
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
LTC2960-4 ADJ/IN 200ms Active Pull-Up
of their respective owners.
Typical a T
Battery and Regulator Monitor Supply Current vs Supply Voltage
1200
6V < V < 8.4V
IN
MR=5V, 27C
V
OUT
LTC3632
1.8V
DC/DC
Li-Ion
+ R2 R4
900
4.2V
6.04M 1.3M
GND
C1
C2
LTC2960-3
0.1F
1F
50V
V DV
CC CC 600
+
IN RST RESET
R1
Li-Ion OUT
+ LOW BATTERY
402k
300
4.2V MR ADJ
GND
R3
402k
2960 TA01 0
0 8 16 24 32 40
V (V)
CC
POWER-FAIL FALLING THRESHOLD = 6.410V
RESET FALLING THRESHOLD = 1.693V
2960 TA01a
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For more information www.linear.com/LTC2960
I (nA)
CC
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ion uresLTC2960
a T e Maxi Mu M r a T
(Notes 1 & 2)
Input Voltages Average Currents
V , RT, MR .......................................... 0.3V to 40V RST, OUT ...........................................................5mA
CC
DV ........................................................ 0.3V to 6V Operating Ambient Temperature Range
CC
+
ADJ, IN , IN ......................................... 0.3V to 3.5V LTC2960C ................................................ 0C to 70C
Output Voltages (LTC2960-1/LTC2960-2) LTC2960I .............................................40C to 85C
RST, OUT ............................................... 0.3V to 40V LTC2960H .......................................... 40C to 125C
Output Voltages (LTC2960-3/LTC2960-4) Storage Temperature Range .................. 65C to 150C
RST, OUT (DV 1.6V) ......... 0.3V to (DV + 0.3V) Lead Temperature (Soldering, 10 sec)
CC CC
RST, OUT (DV = GND) ....................... 0.3V to 6.3V TSOT-23 Package .............................................300C
CC
p c F T
TOP VIEW
+
V 1 8 IN /IN TOP VIEW
CC
+
RT/DV 2 7 ADJ IN /IN 1 8 V
CC
CC
9
ADJ 2 7 RT/DV
CC
RST 3 6 MR
MR 3 6 RST
OUT 4 5 GND
GND 4 5 OUT
DC8 PACKAGE TS8 PACKAGE
8-LEAD (2mm 2mm) PLASTIC DFN 8-LEAD PLASTIC TSOT-23
T = 150C, q = 80.6C/W T = 150C, q = 195C/W
JMAX JA
JMAX JA
EXPOSED PAD (PIN 9) PCB GND
CONNECTION OPTIONAL
o r D i n F Ma T
Lead Free Finish
TAPE AND REEL (MINI) TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2960CDC-1#TRMPBF LTC2960CDC-1#TRPBF LFZZ 8-Lead (2mm 2mm) Plastic DFN 0C to 70C
LTC2960IDC-1#TRMPBF LTC2960IDC-1#TRPBF LFZZ 8-Lead (2mm 2mm) Plastic DFN 40C to 85C
LTC2960HDC-1#TRMPBF LTC2960HDC-1#TRPBF LFZZ 8-Lead (2mm 2mm) Plastic DFN 40C to 125C
LTC2960CDC-2#TRMPBF LTC2960CDC-2#TRPBF LGBC 8-Lead (2mm 2mm) Plastic DFN 0C to 70C
LTC2960IDC-2#TRMPBF LTC2960IDC-2#TRPBF LGBC 8-Lead (2mm 2mm) Plastic DFN 40C to 85C
LTC2960HDC-2#TRMPBF LTC2960HDC-2#TRPBF LGBC 8-Lead (2mm 2mm) Plastic DFN 40C to 125C
LTC2960CDC-3#TRMPBF LTC2960CDC-3#TRPBF LFSF 8-Lead (2mm 2mm) Plastic DFN 0C to 70C
LTC2960IDC-3#TRMPBF LTC2960IDC-3#TRPBF LFSF 8-Lead (2mm 2mm) Plastic DFN 40C to 85C
LTC2960HDC-3#TRMPBF LTC2960HDC-3#TRPBF LFSF 8-Lead (2mm 2mm) Plastic DFN 40C to 125C
LTC2960CDC-4#TRMPBF LTC2960CDC-4#TRPBF LGBF 8-Lead (2mm 2mm) Plastic DFN 0C to 70C
LTC2960IDC-4#TRMPBF LTC2960IDC-4#TRPBF LGBF 8-Lead (2mm 2mm) Plastic DFN 40C to 85C
LTC2960HDC-4#TRMPBF LTC2960HDC-4#TRPBF LGBF 8-Lead (2mm 2mm) Plastic DFN 40C to 125C
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For more information www.linear.com/LTC2960
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