Datasheet

11
LTC1255
TYPICAL APPLICATIO S
U
Automotive Motor Direction and Speed Control with
Stall-Current Shutdown
V
S
DS1
LTC1255
G2
GND

IN2

G1
DS2IN1
0.1µF
100k
30k
30k
12V
MMBZ5242B
MTD3055E
100Ω
0.1µF
14V
DC MOTOR
12V
MMBZ5242B
MTD3055E
MTD3055EL
MOTOR SPEED
AND DIRECTION
CONTROL LOGIC
OR µP
DIRECTION
DIRECTION
PWM 2
PWM 1
MTD3055EL
+
10µF
50V
MR2535L
14V
0.02Ω
5V
LTC1255 • TA05
10 to 12 Cell Battery Switch and 5V Ramped Load Switch with
12µA Standby Current and Optional 3A Overcurrent Shutdown
V
S
DS1
LTC1255
G2
GND

IN2

G1
DS2IN1
100k
µP OR
CONTROL
LOGIC
V
LOGIC
10k
10k
2N2222
0.22µF*
100k*
18V TO 30V
FROM
BATTERY
CHARGER
9.1V
MMBZ5239BL
0.033Ω*
1N5400
10 TO 12
CELL
BATTERY
PACK
IRFR024
12V
MMBZ5242BL
IRFR024
+
100µF
HIGH
†

EFFICIENCY
SWITCHING
REGULATOR
V
IN
+
100µF
5V/1A
SWITCHED
BATTERY
5V/1A
(SWITCHED)
MTD3055EL
V
OUT
100k 1k
0.1µF
*OPTIONAL 3A OVERCURRENT SHUTDOWN
†
SEE LTC1149 DATA SHEET FOR CIRCUIT DETAILS
LTC1255 • TA04
1N4148