LTC2965C ................................................ 0°C to 70°C
LTC2965I .............................................–40°C to 85°C
LTC2965H .......................................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
TOP VIEW
V
IN
1
REF 2
INH 3
INL 4
9
GND
8
7
6
5
OUT
GND
RS
PS
V
IN
NC
NC
NC
NC
REF
INH
INL
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
OUT
NC
NC
NC
NC
GND
RS
PS
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 150°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 9) PCB GND CONNECTION OPTIONAL
MS PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 120°C/W
ORDER INFORMATION
Lead Free Finish
TUBE
LTC2965CDD#PBF
LTC2965IDD#PBF
LTC2965HDD#PBF
LTC2965CMS#PBF
LTC2965IMS#PBF
LTC2965HMS#PBF
TAPE AND REEL
LTC2965CDD#TRPBF
LTC2965IDD#TRPBF
LTC2965HDD#TRPBF
LTC2965CMS#TRPBF
LTC2965IMS#TRPBF
LTC2965HMS#TRPBF
(http://www.linear.com/product/LTC2965#orderinfo)
PART MARKING*
LGMK
LGMK
LGMK
2965
2965
2965
PACKAGE DESCRIPTION
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
8-Lead (3mm × 3mm) Plastic DFN
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
2965fc
2
For more information
www.linear.com/LTC2965
LTC2965
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, RS = GND, PS = GND,
INH = 1.2V, INL = GND (Notes 1, 2).
SYMBOL
V
IN
V
MON
I
VIN
V
UVLO
PARAMETER
Input Supply Operating Range
V
IN
Monitor Range
V
IN
Input Supply Current
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Comparator Reference Input: INH, INL
Comparator Common Mode Voltage
V
CM
V
IN
Error Voltage at 96V
V
ERR
V
IN
Error Voltage at 24V
V
OS
AV
ERR
V
HYS
V
HYTH
t
PD
I
IN(LKG)
Comparator Offset Voltage
Internal Resistive Divider Range Error
Comparator Built-in Hysteresis
Built-in Hysteresis Enable Threshold
V
IN
to OUT Comparator Propagation Delay
Input Leakage Current (INH, INL)
CONDITIONS
V
IN
V
IN
= 100V, 40x
V
IN
Rising
V
IN
Falling
l
ELECTRICAL CHARACTERISTICS
l
l
MIN
3.5
3.5
3
TYP
7
70
MAX
100
98
15
3
UNITS
V
V
µA
V
mV
V
mV
mV
mV
mV
mV
%
mV
mV
mV
µs
nA
nA
V
µV
RMS
l
0.35
±250
±250
±35
±35
±1.9
14
–30
100
22
–22
40
±0.1
±0.1
2.378
2.402
140
INH = V
REF
, 40x
0.35V ≤ INH ≤ 2.4V, 40x
INH = V
REF
, 10x
0.35V ≤ INH ≤ 2.4V, 10x
INH = 0.35V, 10x
INH = 2.4V, Range = 10x, 40x
INH = GND, INL Rising, V
IN
= 24V
INL = GND , INH Falling, V
IN
= 24V
Overdrive = 10%, OUT Falling,10x
INH = GND, INL = 1.2V
V = 1.2V, I-Grade
V = 1.2V, H-Grade
I
REF
≤ 100µA, V
IN
≥ 3.5V
100Hz to 100kHz
l
l
l
l
l
l
l
l
l
l
l
l
2.45
±1360
±400
±315
±75
±3
±0.4
30
–14
175
80
±1
±10
2.426
Reference: REF
Reference Output Voltage
V
REF
Noise
Reference Output Noise
Control Inputs: RS, PS
Select Input Threshold
V
TH
Input Leakage Current
I
LKG
Status Outputs: OUT
Voltage Output Low
V
OL
V
OH
I
OH
I
O(LKG)
Voltage Output High
Output Current High
Leakage Current, Output High
l
l
0.4
V = 2.4V
V
IN
= 1.25V, I = 10µA
V
IN
= 3.5V, I = 500µA
V
IN
= 3.5V, I = –1µA
V
IN
≥ 4.5V, I = –1µA
V = GND, V
IN
= 3.5V
V = 100V, V
IN
= 6V
l
1.4
±100
100
400
2.75
4
–5
±250
V
nA
mV
mV
V
V
µA
nA
l
l
l
l
l
l
2
2.8
–15
2.375
3
–7.5
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
2965fc
For more information
www.linear.com/LTC2965
3
LTC2965
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs V
IN
12
10
8
I
VIN
(µA)
V
REF
(V)
6
4
2
0
RANGE = 40x
OUT = LOW
I
REF
= 0µA
0
20
40
60
V
IN
(V)
80
–45°C
25°C
90°C
125°C
100
2965 G01
V
REF
vs Temperature
2.412
2.408
2.425
2.404
2.400
2.396
2.375
2.392
2.388
–50 –25
2.350
V
REF
(V)
2.400
I = –10µA
2.450
V
REF
vs Load Current
V
IN
= 3.5V
–45°C
25°C
90°C
125°C
0
0.4
1.2
1.6
0.8
LOAD CURRENT (mA)
2.0
2965 G03
0
25 50 75 100 125 150
TEMPERATURE (°C)
2965 G02
2.450
V
REF
vs V
IN
25°C
0.4
% Range Error vs Temperature
1500
1000
RANGE ERROR, AV
ERR
(%)
Comparator V
OS
vs Temperature
V
INH(L)
= 1.2V
2.425
V
REF
(V)
0.2
500
V
OS
(µV)
10x
40x
0
25 50 75 100 125 150
TEMPERATURE (°C)
2965 G05
2.400
0
0
–500
–1000
–1500
–50 –25
2.375
1µA
100µA
1mA
3.0
3.5
3.2
V
IN
(V)
3.7
4.0
2965 G04
–0.2
2.350
2.7
–0.4
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
2965 G06
V
IN
Falling Propagation Delay
vs % Overdrive
125
PROPAGATION DELAY, t
PD
(µs)
100
Built-In Hysteresis
vs Temperature
28
|BUILT-IN HYSTERESIS| V
HYS
(mV)
26
24
22
20
18
16
–50
V
INH(L)
= 1.2V
V
INL
= 1.2V
V
INH
= GND
V
IN
= 12V
75
50
–45°C
25°C
90°C
125°C
0.1
1
10
% OVERDRIVE (%)
100
2965 G10
25
0
0
50
100
TEMPERATURE (°C)
150
2965 G08
2965fc
4
For more information
www.linear.com/LTC2965
LTC2965
TYPICAL PERFORMANCE CHARACTERISTICS
Voltage Output High vs Pull-Down
Current (OUT)
4
V
IN
= 12V
1.50
1.25
Voltage Output Low vs Pull-Up
Current (OUT)
–45°C
25°C
90°C
125°C
Voltage Output High
vs Input Voltage
3.5
3.2
2.9
V
OH
(V)
2.6
2.3
2.0
1.7
I = –1µA
3
1.00
V
OH
(V)
2
V
OL
(V)
0.75
0.50
1
0
–45°C
25°C
90°C
125°C
0
–6
–9
–3
PULL-DOWN CURRENT (µA)
–12
2965 G09
0.25
0
0
1
2
3
4
PULL-UP CURRENT (mA)
5
2965 G10
3
4
5
V
IN
(V)
6
7
8
2965 G11
PIN FUNCTIONS
Exposed Pad (DD8 Only):
Exposed pad may be left floating
or connected to device ground.
GND:
Device Ground.
INH:
High Comparator Reference Input. Voltage on this
pin is multiplied by the configured range setting to set
the V
IN
high or rising threshold. Keep within valid voltage
range, V
CM
, or tie to GND to configure built-in hysteresis
where high threshold for V
IN
becomes INL + V
HYS
scaled
according to the RS pin configuration.
INL:
Low Comparator Reference Input. Voltage on this pin
is multiplied by the configured range setting to set the V
IN
low or falling threshold. Keep within valid voltage range,
V
CM
, or tie to GND to configure built-in hysteresis where
low threshold becomes INH – V
HYS
scaled according to
the RS pin configuration. Otherwise, INH-INL sets the
hysteresis of the comparator. Oscillation will occur if INL
> INH unless built-in hysteresis is enabled.
OUT:
Comparator Output. OUT consists of a high voltage
active pull-down and a gated, resistive (500kΩ) pull-up
to an internally generated supply between 3.5V and 5V
depending on input supply voltage. Blocking circuitry at
the pin allows the pin to be resistively pulled up to volt-
ages as high as 100V without back conducting onto the
internal supply of the part. Polarity with respect to the V
IN
pin is configured using the polarity select pin, PS. OUT
pulls low when the part is in UVLO.
PS:
Polarity Selection. Connect to REF or a voltage >V
TH
to configure comparator output to be inverting with re-
spect to V
IN
. Otherwise connect pin to GND to configure
comparator output to be noninverting with respect to V
IN
.
REF:
Reference Output. V
REF
with respect to GND. Use a
maximum of 1nF to bypass unless damping resistor is used.
RS:
Range Select Input. RS selects 10x or 40x range.
Connect to REF or GND to configure pin. (See Table 1)
V
IN
:
Voltage Monitor and Supply Input. An internal high
value resistive divider is connected to the pin. If V
IN
falls
below the UVLO threshold minus hysteresis, the output
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Embedded System
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