LT1158ISW#TRPBF Linear Technology, LT1158ISW#TRPBF Datasheet - Page 18

• Manufacturer Part Number: LT1158ISW#TRPBF
• Description: IC MOSFET DVR 1/2BRDG NCH 16SOIC
• Manufacturer: Linear Technology

Specifications of LT1158ISW#TRPBF

• Configuration: Half Bridge
• Input Type: PWM
• Current - Peak: 500mA
• Number Of Configurations: 1
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 56V
• Voltage - Supply: 5 V ~ 30 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Delay Time: -

LT1158
TYPICAL APPLICATIONS
18
*
0.01μF
LOW-DROPOUT 12V REGULATOR
0.01μF
f = 25kHz
ADD THESE COMPONENTS TO IMPLEMENT
30k
510Ω
*
THE CMOS 555 IS USED AS A 25kHz TRIANGLE-WAVE
OSCILLATOR DRIVING THE LT1158 INPUT PIN. THE
D.C. LEVEL OF THE TRIANGLE WAVE IS SET BY THE
POTENTIOMETER ON THE CMOS 555 SUPPLY PIN, AND
ALLOW ADJUSTMENT OF THE LT1158 DUTY CYCLE
FROM 0 TO 100%.
3.4k
1μF
4.7k
0.1μF
2.2nF
SYNC
1μF
27k
EXT
+
13k
MOTOR SPEED
0 TO 100%
1
2
3
4
5
6
7
8
Figure 14. Potentiometer-Adjusted Open Loop Motor Speed Control with Short-Circuit Protection
1
2
3
4
LT3525
CMOS
4.7k
555
7.5k
10k
Figure 13. 90% Effi ciency 24V to 5V 10A Switching Regulator
8
7
6
5
16
15
14
13
12
11
10
9
1N5231A
10μF
2.2nF
330pF
5.1k
10μF
1μF
1N4148
1N4148
+
*
95% Effi ciency 24V to 12V 10A Low Dropout Switching Regulator
+
10k
510Ω
0.33μF
SHUTDOWN
0.01μF
0.01μF
1k
1
2
3
4
5
6
7
8
BOOST DR
V
BIAS
ENABLE
FAULT
INPUT
GND
B GATE FB
1
2
3
4
5
6
7
8
+
BOOST DR
V
BIAS
ENABLE
FAULT
INPUT
GND
B GATE FB
+
L1: MAGNETICS CORE #55585-A2
LT1158
30 TURNS 14GA MAGNET WIRE
LT1158
B GATE DR
1N4148
T GATE DR
T SOURCE
T GATE FB
SENSE
SENSE
BOOST
1N4148
T GATE DR
B GATE DR
T GATE FB
T SOURCE
SENSE
SENSE
BOOST
V
+
–
+
CMOS 555: LMC555 OR TLC555
Q1, Q2: MTP35N06E
16
15
14
13
12
11
10
V
9
+
–
+
16
15
14
13
12
11
10
9
0.1μF
(2) IRFZ44
24Ω
24Ω
IRFZ44
R
S
330k
: DALE TYPE LVR-3
ULTRONIX RCS01
0.1μF
INPUT
30V MAX
+
SHORT-CIRCUIT
CURRENT = 15A
70μH
L1
Q2
+
–
+
+
Q1
0.02Ω
10V TO 30V
+
START CURRENT
= 15A MINIMUM
0.007Ω
500μF EA
LOW ESR
MBR340
R
S
1000μF
LOW ESR
LT1158 F14
–
+
1000μF
LOW ESR
5V OR
12V
LT1158 F13
1158fb
*