LT1336IS#TR Linear Technology, LT1336IS#TR Datasheet - Page 15

• Manufacturer Part Number: LT1336IS#TR
• Description: IC DRVR MOSF 1/2BRDG N-CH 16SOIC
• Manufacturer: Linear Technology

Specifications of LT1336IS#TR

• Configuration: Half Bridge
• Input Type: Differential
• Delay Time: 250ns
• Current - Peak: 1.5A
• Number Of Configurations: 1
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 60V
• Voltage - Supply: 10 V ~ 15 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

applicaTions inForMaTion
current can raise the voltage of the high voltage rail. This
can be avoided by placing a discharge resistor between HV
supply and ground to divert the return current to ground
as shown in Figure 5. For a high voltage rail of 40V, a 26k
resistor or smaller should be used, since the top driver
will return about 1.5mA.
For applications where using a discharge resistor is un-
desirable, use the flyback regulator topology instead of
the boost regulator topology (see Deriving the Floating
Supply with the Flyback Topology).
To drive a DC motor in both directions, two LT1336s
can be used to drive an H-bridge output stage. In this
configuration the motor can be made to run clockwise,
counterclockwise, stop rapidly (“plugging” braking) or free
run (coast) to a stop. A very rapid stop may be achieved
by reversing the current, though this requires more careful
design to stop the motor dead. In practice a closed-loop
control system with tachometric feedback is usually
necessary.
Typical applicaTions
SHUTDOWN
4.7k
0.022µF
1µF
510
+
C1
0.1µF
360
2k
** MAGNETICS CORE #55585-A2 30 TURNS 14GA MAGNET WIRE
* SUMIDA RCR-664D-221KC
†
DALE TYPE LVR-3 ULTRONIX RCS01
0.33µF
0.1µF
0.1µF
27k
Figure 6. 90% Efficiency, 40V to 5V, 10A, Low Dropout Voltage Mode Switching Regulator
1
2
3
4
5
6
7
8
9
f = 25kHz
LT3526
4.7k
18
17
16
15
14
13
12
11
10
1N4148
1N4148
+
2.2nF
1µF
1k
5k
+
2N2222
1k
2 , 1/4W
10µF
R
SENSE
1
2
3
4
5
6
7
8
I
SV
INTOP
INBOTTOM
UVOUT
SGND
PGND
BGATEFB
SENSE
The motor speed in these examples can be controlled by
switching the drivers with pulse width modulated square
waves. This approach is particularly suitable for micro-
computers/DSP control loops.
+
+
LT1336
200µH
10µF
L1*
R
2
1/4W
SENSE
TSOURCE
BGATEDR
TGATEDR
TGATEFB
SWITCH
SWGND
BOOST
Figure 5. Driving a Supply Referenced Motor
PV
V
V
I
SENSE
+
+
+
LT1336
16
15
14
13
12
11
10
9
1N4148
D1
1N4148
+
IRFZ44
200µH*
TSOURCE
BGATEDR
TGATEDR
TGATEFB
BGATEFB
SWITCH
BOOST
1µF
PGND
1N4148
IRFZ44
330k
+
V
–
BOOST
IRFZ44
+
+
70µH
L2**
MBR340
D2
1N4148
C
1µF
+
BOOST
2200µF EA
LOW ESR
0.007
12V
40V
HV = 40V MAX
R
S
+
†
LT1336
*SUMIDA
RCR-664D-221KC
+
15
1336 F06
5400µF
LOW
ESR
R
24k
DISCHRG
5V
1336fa
1336 F05