LTC1155
TYPICAL APPLICATI S
High Side Driver with VDS Sense Short-Circuit Shutdown
4.5V TO 6V
+
10µF
30k
5V
VS
DS1
*
IN1
1/2
LTC1155
G1
GND
0.01µF
IRLZ24
270k
*ANY 74C OR 74HC LOGIC GATE.
MOSFET SHUTS DOWN IF VDS > 1V
LOAD
1155 TA04
X-NOR Fault Detection
4.5V TO 6V
+
10µF
VS
DS1
IN1
1/2
LTC1155
G1
GND
100k
0.1Ω
10k
IRLD024
74C266
FAULT
LOAD
1155 TA05
Truth Table
IN
OUT
CONDITION
FLT
0
0
Switch OFF
1
1
0
Short Circuit
0
0
1
Open Load
0
1
1
Switch ON
1
Low Side Driver with Drain End Current Sensing
5V
+
10µF
VS
DS1
IN1
1/2
LTC1155
G1
GND
0.05Ω
5%
LOAD
SMP25N05
1155 TA06
10
Low Side Driver with Source End Current Sensing
5V
VLOAD
+
10µF
VS
DS1
IN1
1/2
LTC1155
G1
GND
51Ω
LOAD
SMP25N05
7
3
6 LT®1077*
2
51Ω
4
0.02Ω
5%
*DO NOT SUBSTITUTE. MUST BE A PRECISION, SINGLE
SUPPLY, MICROPOWER OP AMP (IQ < 60µA)
1155 TA07