LT1716 Datasheet, PDF (1/12 Pages) Linear Technology – SOT-23, 44V, Over-The-Top, Micropower, Precision Rail-to-Rail Comparator

FEATURES
s _{Operates from 2.7V to 44V}
s _Over-The-Top^®_{: Input Common Mode Range}
Extends 44V Above V^–, Independent of V⁺
s _{Micropower: 35µA IQ}
s _{Offset Voltage: 1.5mV Max}
s _{5-Pin SOT-23 Package}
s _{Valid Output with Either Input 5V Below V}^–
s _{Rail-to-Rail Output Swing}
s _{Output Can Drive Loads Above V}⁺
s _{Internal Pull-Up Current}
s _{– 40°C to 125°C Operating Temperature Range}
U
APPLICATIO S
s _{Power Supply Monitors}
s _{Relay/Lamp Driver}
s _Oscillators
s _{Peak Detector}
s _{Level Shifting}
TYPICAL APPLICATIO
Lamp Monitor
5V TO 44V
3V
1M
0.1µF
LAMP
ON/OFF
R_S
0.15Ω
1W
0.25A TO 2.5A
100k
CMPD6001
5k
4_– ⁵
0.04
R_S ≥
I_L
LT1716
3₊
2
1 _{LAMP GOOD}
1716 TA01
LT1716
SOT-23, 44V, Over-The-Top,
Micropower, Precision
Rail-to-Rail Comparator
DESCRIPTIO
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a registered trademark of Linear Technology Corporation.
Input Bias Current vs Input Bias Voltage
12µ
V_S = 5V, 0V
8µ
4µ ^INPUT
BELOW
6n _SUPPLY
3n
INPUT
ABOVE
SUPPLY
+IN = 10V
0
+IN = 2V
–3n
+IN = 2V
–6n
–100µ
–0.5m
–1m
–1.5m
–10 –5 0
5 10 15 20 45
V_IN– (V)
1716 TA02
1716f
1