LTC1154
U
O
TYPICAL APPLICATI S
High-Side Relay Driver with Over-Current
Protection and Status Feedback
24V to 28V Switch with Bootstrapped Supply
24V TO 28V
12V
+
+
100k
100µF
100µF
2Ω
0.02Ω
+
5V
5V
18V
10µF
10k
6.2k
IN
V
IN
V
S
S
0.01µF
1N4148
µP OR
CONTROL
LOGIC
µP OR
CONTROL
LOGIC
1N4148
EN
DS
G
EN
DS
G
MTD3055E
15V
LTC1154
LTC1154
STATUS†
MTP15N06E
STATUS†
TO 12V
LOAD
200k
GND
SD
GND
SD
PTC
THERMISTOR
(100°C)*
1N4001
24V TO 28V
LOAD
*KEYSTONE RL2006-100-100-30-PT.
COIL CURRENT LIMITED TO 350mA.
CONTACT CURRENT LIMITED TO 5A.
MOUNT ON MOSFET OR LOAD HEAT SINK.
LTC1154 • TA07
LTC1154 • TA08
I
= 60µA, I
= 1mA.
Q(OFF)
Q(ON)
†A 51k pullup resistor should be connected between Status Output and 5V Logic Supply.
“4-Cell-to-5V” Extremely Low Voltage Drop Regulator with
Over-Current Shutdown, Status Feedback, Ramped Turn-ON
and 8µA Standby Current
4-CELL
BATTERY
PACK
+
100µF
0.036Ω
5V
IN
V
S
µP OR
CONTROL
LOGIC
IRLR024
1N4148
100k 100k
0.22µF
EN
DS
G
200pF
10k
LTC1154
STATUS†
1
8
3
4
5V/2A
LT1431
7
GND
SD
+
470µF
ESR < 0.5Ω
6
5
LTC1154 • TA09
12
Linear [ Linear ]
