Datasheet

LTC1154
12
1154fb
TYPICAL APPLICATIONS
24V to 28V Switch with Bootstrapped Supply High Side Relay Driver with Overcurrent
Protection and Status Feedback
“4-Cell-to-5V” Extremely Low Voltage Drop Regulator with
Overcurrent Shutdown, Status Feedback, Ramped Turn-ON
and 8μA Standby Current
IN
EN
STATUS
†
GND
V
S
DS
G
SD
LTC1154
MTP15N06E
24V TO 28V
LTC1154 • TA07
24V TO 28V
LOAD
5V
* KEYSTONE RL2006-100-100-30-PT.
MOUNT ON MOSFET OR LOAD HEAT SINK.
I
Q(OFF)
= 60MA, I
Q(ON)
= 1mA.
μP OR
CONTROL
LOGIC
10μF
+
100μF
100k
18V
PTC
THERMISTOR
(100°C)*
200k
+
6.2k
1N4148
IN
EN
STATUS
†
GND
V
S
DS
G
SD
LTC1154
MTD3055E
12V
LTC1154 • TA08
5V
COIL CURRENT LIMITED TO 350mA.
CONTACT CURRENT LIMITED TO 5A.
μP OR
CONTROL
LOGIC
+
100μF
0.02Ω
0.01μF
1N4148
10k
2Ω
TO 12V
LOAD
15V
1N4001
IN
EN
STATUS
†
GND
V
S
DS
G
SD
LTC1154
LTC1154 • TA09
1N4148
100k 100k
0.22μF
+
100μF
4-CELL
BATTERY
PACK
200pF
10k
8
LT1431
7
3
4
1
56
0.036Ω
IRLR024
5V/2A
+
470μF
ESR < 0.5Ω
5V
μP OR
CONTROL
LOGIC
†
A 51k pullup resistor should be connected between Status Output and 5V Logic Supply.