Datasheet
LTC6101/LTC6101HV
16
6101fh
TYPICAL APPLICATIONS
Bidirectional Current Sense Circuit with Separate Charge/Discharge Output
LTC6101 Monitors Its Own Supply Current High-Side-Input Transimpedance Amplifi er
L
O
A
D
CHARGER
–
+
–
+
+
–
+
–
V
OUT D
= I
DISCHARGE
•
R
SENSE
( )
WHEN I
DISCHARGE
≥ 0DISCHARGING:
R
OUT D
R
IN D
V
OUT C
= I
CHARGE
•
R
SENSE
( )
WHEN I
CHARGE
≥ 0CHARGING:
R
OUT C
R
IN C
6101 TA02
V
BATT
R
IN C
100
LTC6101
R
IN D
100
R
IN C
100
LTC6101
V
OUT D
R
OUT D
4.99k
R
OUT C
4.99k
V
OUT C
R
IN D
100
I
DISCHARGE
R
SENSE
I
CHARGE
V
+
V
–
OUT
–IN+IN
V
+
V
–
OUT
–IN +IN
L
O
A
D
–
+
6101 TA03
R2
4.99k
V
OUT
R1
100
V
BATT
R
SENSE
LTC6101
+
–
V
OUT
= 49.9
•
R
SENSE
(
I
LOAD
+ I
SUPPLY
)
I
LOAD
I
SUPPLY
V
+
V
–
OUT
–IN+IN
–
+
6101 TA04
R
L
V
O
4.75k4.75k
V
S
LASER MONITOR
PHOTODIODE
CMPZ4697*
(10V)
10k
i
PD
LTC6101
V
O
= I
PD
•
R
L
*V
Z
SETS PHOTODIODE BIAS
V
Z
+ 4 ≤ V
S
≤ V
Z
+ 60
V
+
V
–
OUT
–IN+IN
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