LT1162CSW#PBF Linear Technology, LT1162CSW#PBF Datasheet - Page 11
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LT1162CSW#PBF
Manufacturer Part Number
LT1162CSW#PBF
Description
IC PWR MOSFET DRIVER NCH 24SOIC
Manufacturer
Linear Technology
Datasheet
1.LT1160CSPBF.pdf
(16 pages)
Specifications of LT1162CSW#PBF
Configuration
Half Bridge
Input Type
Non-Inverting
Delay Time
250ns
Current - Peak
1.5A
Number Of Configurations
2
Number Of Outputs
4
High Side Voltage - Max (bootstrap)
60V
Voltage - Supply
10 V ~ 15 V
Operating Temperature
25°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Number Of Drivers
4
Driver Configuration
Non-Inverting
Driver Type
High Side/Low Side
Input Logic Level
CMOS/TTL
Rise Time
200ns
Fall Time
140ns
Operating Supply Voltage (max)
15V
Peak Output Current
1.5A
Operating Supply Voltage (min)
10V
Operating Supply Voltage (typ)
12V
Turn Off Delay Time
600fs
Turn On Delay Time (max)
500ps
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
24
Package Type
SOIC W
Device Type
MOSFET
Module Configuration
Half / Full Bridge
Input Delay
180ns
Output Delay
180ns
Supply Voltage Range
10V To 15V
Driver Case Style
SOIC
No. Of Pins
24
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
APPLICATIONS
Motor Drive Applications
In applications where rotation is always in the same
direction, a single LT1160 controlling a half-bridge can be
used to drive a DC motor. One end of the motor may be
connected either to supply or to ground as seen on Figure
3. A motor in this configuration is controlled by its inputs
which give three alternatives: run, free running stop (coast-
ing) and fast stop (“plugging” braking, with the motor
shorted by one of the MOSFETs).
To drive a DC motor in both directions the LT1162 can be
used to drive an H-bridge output stage. In this configura-
tion the motor can be made to run clockwise, counter-
clockwise, 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.
U
REF PWM
INFORMATION
Figure 2. Adding Synchronous Switching to a Step-Down Switching Regulator
U
OUT A
OUT A
12V
W
SV
PV
IN TOP
IN BOTTOM
+
+
LT1160
U
B GATE DR
T GATE DR
T GATE FB
T SOURCE
B GATE FB
BOOST
12V
R
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.
GS
Figure 3. Driving a Supply Referenced Motor
HV
IN TOP
IN BOTTOM
SV
PV
+
+
LT1160
B GATE DR
T GATE DR
T GATE FB
T SOURCE
B GATE FB
R
BOOST
PGND
SENSE
+
LT1160/LT1162
1160 F02
V
OUT
11
11602fb
1160 F03
HV