Datasheet
LT6100
13
6100fc
applicaTions inForMaTion
Power Down While Connected to a Battery
Another unique benefit of the LT6100 is that you can leave it
connected to a battery even when it is denied power. When
the LT6100 loses power or is intentionally powered down,
its inputs remain high impedance (see Figure 8). This is
due to the implementation of Linear Technology’s Over-
The-Top
®
input topology at its front end. When powered
down, the LT6100 inputs draw less than 1µA of current.
V
OUT
FIL
V
CC
POWER
DOWN OK
INPUTS
REMAIN
Hi-Z
V
CC
0V
3V
6100 F08
R
SENSE
LT6100
V
S
–
V
S
+
V
EE
A2 A4
TO LOAD
I
SENSE
–
+
BATTERY
4.1V TO 48V
+
Figure 8. Input Remains Hi-Z when LT6100 is Powered Down
Typical applicaTion
Adjust Gain Dynamically for Enhanced Range
V
OUT
FIL
V
CC
0V
(GAIN = 10)
5V
(GAIN = 50)
6100 TA05
R
SENSE
LT6100
V
S
–
V
S
+
V
EE
2N7002
A2 A4
TO LOAD
5V
I
SENSE
FROM SOURCE
–
+
Micro-Hotplate Voltage and Current Monitor
MICRO-HOTPLATE
BOSTON
MICROSYSTEMS
MHP100S-005
I
HOTPLATE
M9
LT1991
5V
6100 TA06
5V
M3
M1
P1
P3
P9
10Ω
1%
+
–
V
S
–
V
EE
V
CC
A2
LT6100
5V
CURRENT
MONITOR
V
OUT
= 500mV/mA
VOLTAGE
MONITOR
V
OUT
=
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V
DR
+
V
DR
–
A4
V
S
+
V
DR
+
– V
DR
–
10