LT6109IMS-1#TRPBF Linear Technology, LT6109IMS-1#TRPBF Datasheet - Page 24

• Manufacturer Part Number: LT6109IMS-1#TRPBF
• Manufacturer: Linear Technology

Specifications of LT6109IMS-1#TRPBF

• Lead Free Status / Rohs Status: Compliant

LT6109-1/LT6109-2
TYPICAL APPLICATIONS
The comparators are set to have a 50mA undercurrent
threshold and a 300mA overcurrent threshold. The MCU
The comparators monitor for overcurrent and undervolt-
age conditions. If either fault condition is detected the
battery will immediately be disconnected from the load.
24
AtMega1280
PCINT2
PCINT3
ADC2
PB0
PB1
PB5
5
6
7
2
3
1
40V CELL STACK
12 LITHIUM
V
OUT
+
+
+
+
/ADC IN
10µF
0.1µF
5V
5V
V
10k
10k
+
1M
13.3k
Overcurrent and Undervoltage Battery Fault Protection
INC2
RESET
10k
10
100
9
2
3
4
MCU Interfacing with Hardware Interupts
5V
SENSEHI SENSELO
V
EN/RST
OUTC2
OUTC1
+
RESET
LT6109-1
0.1
V
–
10
5
R10
100
9
2
4
3
OUTA
SENSEHI SENSELO
INC2
INC1
V
EN/RST
OUTC1
OUTC2
+
LT6109-1
1
8
7
6
0.1
V
–
5
6109 TA03
2k
6.65k
1.33k
will receive the comparator outputs as hardware interrupts
and immediately run an appropriate fault routine.
The latching comparator outputs ensure the battery stays
disconnected from the load until an outside source resets
the LT6109 comparator outputs.
OUTA
INC1
INC2
V
ADC IN
OUT
TO LOAD
1
8
6
7
0.8A
OVERCURRENT
DETECTION
30V
UNDERVOLTAGE
DETECTION
SENSE
LOW
475
9.53k
5V
Example:
100k
6109 TA02
V
UNDERCURRENT ROUTINE
OUT
RESET COMPARATORS
MCU INTERUPT
2N7000
100k
6.2V
IRF9640
TO
LOAD
OUTC2 GOES LOW
610912 TA03b
610912f