Datasheet

LT1716
1
1716fa
TYPICAL APPLICATION
FEATURES DESCRIPTION
SOT-23, 44V, Over-the-Top,
Micropower, Precision
Rail-to-Rail Comparator
The LT
®
1716 comparator operates on any total power
supply voltage between 2.7V and 44V drawing 35μA of
quiescent current. The LT1716 has a unique input stage
that can be taken 44V above V
, independent of V
+
supply.
(Built-in resistors protect the inputs for faults below the
negative supply of up to 5V.) The inputs can withstand
44V both differential and common mode.
The output stage includes a class “B” pull-up current
source, eliminating the need for an external resistive
pull-up and saving power. Output voltage swings to within
35mV of the negative supply and 55mV of the positive
supply, which makes the comparator a good choice for
low voltage single supply operation. The output stage is
also designed to drive loads connected to a higher supply
than the LT1716 supply, the same as an open collector
output stage.
The LT1716 is available in a SOT-23 5-lead package.
Lamp Monitor
APPLICATIONS
n
Operates from 2.7V to 44V
n
Over-The-Top
®
: Input Common Mode Range
Extends 44V Above V
, Independent of V
+
n
Micropower: 35μA I
Q
n
Offset Voltage: 1.5mV Max
n
Valid Output with Either Input 5V Below V
n
Rail-to-Rail Output Swing
n
Output Can Drive Loads Above V
+
n
Internal Pull-Up Current
n
–40°C to 125°C Operating Temperature Range
n
Low Profi le (1mm) SOT-23 (ThinSOT™) Package
n
Power Supply Monitors
n
Relay/Lamp Driver
n
Oscillators
n
Peak Detector
n
Level Shifting
L, LT, LTC, LTM, Over-The-Top, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Input Bias Current vs Input Bias Voltage
3V
+
5V TO 44V
LAMP
ON/OFF
100k
R
S
0.15Ω
1W
0.25A TO 2.5A
1716 TA01
LT1716 LAMP GOOD
CMPD6001
5k
4
3
1
5
2
1M
0.1μF
R
S
0.04
I
L
V
IN
(V)
–10
–5 0 5 10 15 20 45
I
B
(A)
1716 TA02
12μ
6n
3n
0
–3n
–6n
–100m
–0.5m
–1m
–1.5m
+IN = 2V +IN = 2V
+IN = 10V
INPUT
BELOW
SUPPLY
V
S
= 5V, 0V
INPUT
ABOVE
SUPPLY
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