LT1336
Half-Bridge N-Channel
Power MOSFET Driver
with Boost Regulator
FeaTures
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DescripTion
The LT
®
1336 is a cost effective half-bridge N-channel
power MOSFET driver. The floating driver can drive the
topside N-channel power MOSFETs operating off a high
voltage (HV) rail of up to 60V (absolute maximum). In
PWM operation an on-chip switching regulator maintains
charge in the bootstrap capacitor even when approaching
and operating at 100% duty cycle.
The internal logic prevents the inputs from turning on
the power MOSFETs in a half-bridge at the same time. Its
unique adaptive protection against shoot-through cur-
rents eliminates all matching requirements for the two
MOSFETs. This greatly eases the design of high efficiency
motor control and switching regulator systems.
During low supply or start-up conditions, the undervoltage
lockout actively pulls the driver outputs low to prevent
the power MOSFETs from being partially turned on. The
0.5V hysteresis allows reliable operation even with slowly
varying supplies.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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Floating Top Driver Switches Up to 60V
Internal Boost Regulator for DC Operation
180ns Transition Times Driving 10,000pF
Adaptive Nonoverlapping Gate Drives Prevent
Shoot-Through
Drives Gate of Top N-Channel MOSFET
Above Supply
Top Drive Maintained at High Duty Cycles
TTL/CMOS Input Levels
Undervoltage Lockout with Hysteresis
Operates at Supply Voltages from 10V to 15V
Separate Top and Bottom Drive Pins
applicaTions
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PWM of High Current Inductive Loads
Half-Bridge and Full-Bridge Motor Control
Synchronous Step-Down Switching Regulators
3-Phase Brushless Motor Drive
High Current Transducer Drivers
Class D Power Amplifiers
Typical applicaTion
12V
1N4148
200µH*
R
SENSE
2
1/4W
1
I
SENSE
2
SV
+
PV
+
SWITCH
BOOST
16
14
13
1N4148
HV = 40V MAX**
+
10
10µF
25V
5
3
4
PWM
0Hz TO 100kHz
+
TGATEDR
LT1336
12
TGATEFB
11
TSOURCE
UVOUT
9
BGATEDR
INTOP
8
BGATEFB
INBOTTOM
SGND
6
SWGND
15
PGND
7
+
IRFZ44
C
BOOST
1µF
IRFZ44
1000µF
100V
INTOP INBOTTOM
L
L
H
H
L
H
L
H
TGATEDR
L
L
H
L
BGATEDR
L
H
L
L
* SUMIDA RCR-664D-221KC
** FOR HV > 40V SEE “DERIVING THE FLOATING
SUPPLY WITH THE FLYBACK TOPOLOGY” IN
APPLICATIONS INFORMATION SECTION
1336 TA01
1336fa
1
LT1336
absoluTe MaxiMuM raTings
(Note 1)
Supply Voltage (Pins 2, 10) .......................................20V
Boost Voltage............................................................75V
Peak Output Currents (<10µs) .................................. 1.5A
Input Pin Voltages ..............................–0.3V to V
+
+ 0.3V
Top Source Voltage ....................................... –5V to 60V
Boost-to-Source Voltage
(V
BOOST
– V
TSOURCE
) ............................. –0.3V to 20V
Switch Voltage (Pin 16).............................. –0.3V to 60V
Operating Temperature Range
Commercial ............................................. 0°C to 70°C
Industrial .............................................–40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
pin conFiguraTion
TOP VIEW
I
SENSE
SV
+
INTOP
INBOTTOM
UVOUT
SGND
PGND
BGATEFB
1
2
3
4
5
6
7
8
16 SWITCH
15 SWGND
14 BOOST
13 TGATEDR
12 TGATEFB
11 TSOURCE
10 PV
+
9
BGATEDR
I
SENSE
1
SV
+
2
INTOP 3
INBOTTOM 4
UVOUT
5
SGND 6
PGND 7
BGATEFB 8
TOP VIEW
16 SWITCH
15 SWGND
14 BOOST
13 TGATEDR
12 TGATEFB
11 TSOURCE
10 PV
+
9
BGATEDR
N PACKAGE
16-LEAD PLASTIC DIP
T
JMAX
= 125°C,
θ
JA
= 70°C/W
S PACKAGE
16-LEAD PLASTIC SO
T
JMAX
= 125°C,
θ
JA
= 110°C/W
orDer inForMaTion
LEAD FREE FINISH
LT1336CN#PBF
LT1336IN#PBF
LT1336CS#PBF
LT1336IS#PBF
TAPE AND REEL
LT1336CN#TRPBF
LT1336IN#TRPBF
LT1336CS#TRPBF
LT1336IS#TRPBF
PART MARKING
LT1336CN
LT1336IN
LT1336CS
LT1336IS
PACKAGE DESCRIPTION
16-Lead Plastic DIP
16-Lead Plastic DIP
16-Lead Plastic SO
16-Lead Plastic SO
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
1336fa
2
LT1336
elecTrical characTerisTics
SYMBOL
I
S
PARAMETER
DC Supply Current (Note 3)
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Test Circuit, V
+
= V
BOOST
= 12V, V
TSOURCE
= 0V and Pins 1, 16 open. Gate
Feedback pins connected to Gate Drive pins unless otherwise specified.
CONDITIONS
V
+
= 15V, V
INTOP
= 0.8V, V
INBOTTOM
= 2V
V
+
= 15V, V
INTOP
= 2V, V
INBOTTOM
= 0.8V
V
+
= 15V, V
INTOP
= 0.8V, V
INBOTTOM
= 0.8V
V
+
= 15V, V
TSOURCE
= 40V, V
INTOP
= V
INBOTTOM
=
0.8V (Note 4)
V
+
= 15V, V
TSOURCE
= 60V, V
BOOST
= 75V,
V
INTOP
= V
INBOTTOM
= 0.8V
l
l
MIN
12
12
12
TYP
15
14
15
30
5
1.4
MAX
20
20
20
40
7
0.8
25
9.75
8.9
9.8
9.2
5
0.4
12
12
0.7
0.7
650
85
1.2
11.2
200
200
140
140
500
400
600
400
UNITS
mA
mA
mA
mA
mA
V
V
µA
V
V
V
V
µA
V
V
V
V
V
mV
mV
V
V
ns
ns
ns
ns
ns
ns
ns
ns
I
BOOST
V
IL
V
IH
I
IN
V
+UVH
V
+UVL
V
BUVH
V
BUVL
I
UVOUT
V
UVOUT
V
OH
Boost Current (Note 3)
Input Logic Low
Input Logic High
Input Current
V
+
Undervoltage Start-Up Threshold
V
+
Undervoltage Shutdown Threshold
V
BOOST
Undervoltage Start-Up Threshold
V
BOOST
Undervoltage Shutdown Threshold
Undervoltage Output Leakage
Undervoltage Output Saturation
Top Gate ON Voltage
Bottom Gate ON Voltage
3
2
8.4
7.8
1.7
7
9.2
8.3
9.3
8.7
0.1
0.2
V
INTOP
= V
INBOTTOM
= 4V
l
V
TSOURCE
= 60V, V
BOOST
– V
TSOURCE
V
TSOURCE
= 60V, V
BOOST
– V
TSOURCE
V
+
= 15V
V
+
= 7.5V, I
UVOUT
= 2.5mA
V
INTOP
= 2V, V
INBOTTOM
= 0.8V,
V
TGATE DR
– V
TSOURCE
V
INTOP
= 0.8V, V
INBOTTOM
= 2V, V
BGATE DR
V
INTOP
= 0.8V, V
INBOTTOM
= 2V,
V
TGATE DR
– V
TSOURCE
V
INTOP
= 2V, V
INBOTTOM
= 0.8V, V
BGATE DR
V
TSOURCE
= 60V, V
BOOST
= 68V, V
+
– V
ISENSE
V
TSOURCE
= 60V, V
BOOST
= 68V
V
ISENSE
= V
+
, V
BOOST
– V
TSOURCE
= 9V,
I
SW
= 100mA
V
TSOURCE
= 40V, V
INTOP
= V
INBOTTOM
= 0.8V,
I
BOOST
= 10mA, V
BOOST
– V
TSOURCE
V
INTOP
(+) Transition, V
INBOTTOM
= 0.8V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INBOTTOM
(+) Transition, V
INTOP
= 0.8V,
Measured at V
BGATE DR
(Note 5)
V
INTOP
(–) Transition, V
INBOTTOM
= 0.8V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INBOTTOM
(–) Transition, V
INTOP
= 0.8V,
Measured at V
BGATE DR
(Note 5)
V
INTOP
(+) Transition, V
INBOTTOM
= 0.8V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INBOTTOM
(+) Transition, V
INTOP
= 0.8V,
Measured at V
BGATE DR
(Note 5)
V
INTOP
(–) Transition, V
INBOTTOM
= 0.8V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INBOTTOM
(–) Transition, V
INTOP
= 0.8V,
Measured at V
BGATE DR
(Note 5)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
8.8
8.2
11
11
11.3
11.3
0.4
0.4
V
OL
Top Gate OFF Voltage
Bottom Gate OFF Voltage
V
IS
V
ISHYS
V
SAT
V
BOUT
t
r
I
SENSE
Peak Current Threshold
I
SENSE
Hysteresis
Switch Saturation Voltage
V
BOOST
Regulated Output
Top Gate Rise Time
Bottom Gate Rise Time
310
25
480
55
0.85
10
10.6
130
90
60
60
250
200
300
200
t
f
Top Gate Fall Time
Bottom Gate Fall Time
t
D1
Top Gate Turn-On Delay
Bottom Gate Turn-On Delay
t
D2
Top Gate Turn-Off Delay
Bottom Gate Turn-Off Delay
1336fa
3
LT1336
elecTrical characTerisTics
SYMBOL
t
D3
PARAMETER
Top Gate Lockout Delay
Bottom Gate Lockout Delay
t
D4
Top Gate Release Delay
Bottom Gate Release Delay
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Test Circuit, V
+
= V
BOOST
= 12V, V
TSOURCE
= 0V and Pins 1, 16 open. Gate
Feedback pins connected to Gate Drive pins unless otherwise specified.
CONDITIONS
V
INBOTTOM
(+) Transition, V
INTOP
= 2V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INTOP
(+) Transition, V
INBOTTOM
= 2V,
Measured at V
BGATE DR
(Note 5)
V
INBOTTOM
(–) Transition, V
INTOP
= 2V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
V
INTOP
(–) Transition, V
INBOTTOM
= 2V,
Measured at V
BGATE DR
(Note 5)
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l
l
l
MIN
TYP
300
250
250
200
MAX
600
500
500
400
UNITS
ns
ns
ns
ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LT1336CN/LT1336IN: T
J
= T
A
+ (P
D
)(70°C/W)
LT1336CS/LT1336IS: T
J
= T
A
+ (P
D
)(110°C/W)
Note 3:
Dynamic supply current is higher due to the gate charge
being delivered at the switching frequency. See Typical Performance
Characteristics and Applications Information sections.
Note 4:
Pins 1 and 16 connected to each end of the inductor. Booster is
free running.
Note 5:
See Timing Diagram. Gate rise times are measured from 2V to 10V
and fall times are measured from 10V to 2V. Delay times are measured
from the input transition to when the gate voltage has risen to 2V or
decreased to 10V.
Typical perForMance characTerisTics
DC Supply Current
vs Supply Voltage
22
20
SUPPLY CURRENT (mA)
18
16
14
12
10
8
6
4
6
8
10 12 14 16
SUPPLY VOLTAGE (V)
18
20
V
INTOP
= HIGH
V
INBOTTOM
= LOW
V
INTOP
= LOW
V
INBOTTOM
= HIGH
V
TSOURCE
= 0V
SUPPLY CURRENT (mA)
BOTH INPUTS
HIGH OR LOW
18
17
16
15
14
13
12
11
10
9
–50
–25
V
INTOP
= HIGH
V
INBOTTOM
= LOW
V
INTOP
= LOW
V
INBOTTOM
= HIGH
0
25
50
75
TEMPERATURE (C)
100
125
BOTH INPUTS
HIGH OR LOW
DC Supply Current
vs Temperature
V
+
= 12V
V
TSOURCE
= 0V
SUPPLY CURRENT (mA)
34
31
28
25
22
19
16
13
10
DC Supply Current
vs Top Source Voltage
V
+
= 12V
V
INTOP
= LOW
V
INBOTTOM
= HIGH
BOTH INPUTS
HIGH OR LOW
V
INTOP
= HIGH
V
INBOTTOM
= LOW
0
5
10 15 20 25 30
TOP SOURCE VOLTAGE (V)
35
40
1336 G01
1336 G02
1336 G18
1336fa
4
LT1336
Typical perForMance characTerisTics
DC + Dynamic Supply Current
vs Input Frequency
60
50
SUPPLY CURRENT (mA)
40
30
20
10
0
50% DUTY CYCLE
C
GATE
= 3000pF
SUPPLY CURRENT (mA)
60
50
40
C
GATE
= 10000pF
30
C
GATE
= 3000pF
20
10
0
C
GATE
= 1000pF
50% DUTY CYCLE
V
+
= 12V
SUPPLY VOLTAGE (V)
DC + Dynamic Supply Current
vs Input Frequency
13
12
11
10
9
8
7
6
5
1
10
100
INPUT FREQUENCY (kHz)
1000
1336 G04
Undervoltage Lockout (V
+
)
V
+
= 20V
V
+
= 15V
START-UP THRESHOLD
SHUTDOWN THRESHOLD
V
+
= 10V
1
10
100
INPUT FREQUENCY (kHz)
1000
1336 G03
4
–50
–25
0
25
50
75
TEMPERATURE (C)
100
125
1336 G05
Undervoltage Lockout (V
BOOST
)
13
V
BOOST
– V
TSOURCE
VOLTAGE (V)
INPUT THRESHOLD VOLTAGE (V)
12
11
10
9
8
7
6
5
4
–50
–25
0
25
50
75
TEMPERATURE (C)
100
125
SHUTDOWN THRESHOLD
START-UP THRESHOLD
V
TSOURCE
= 60V
Input Threshold Voltage
vs Temperature
2.0
1.8
1.6
V
LOW
1.4
1.2
1.0
0.8
–50
V
+
= 12V
V
HIGH
INPUT CURRENT (µA)
14
13
12
11
10
9
8
7
6
5
–25
0
25
50
75
TEMPERATURE (C)
100
125
Top or Bottom Input Pin Current
vs Temperature
V
+
= 12V
V
IN
= 4V
4
–50
–25
50
25
0
75
TEMPERATURE (C)
100
125
1336 G06
1336 G07
1336 G08
Top or Bottom Input Pin Current
vs Input Voltage
5.0
4.5
4.0
INPUT CURRENT (mA)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
4
5
6
10
8
7
9
INPUT VOLTAGE (V)
11
12
V
+
= 12V
BOTTOM GATE RISE TIME (ns)
230
210
190
170
150
130
110
90
70
Bottom Gate Rise Time
vs Temperature
V
+
= 12V
BOTTOM GATE FALL TIME (ns)
C
LOAD
= 10000pF
210
190
170
150
130
110
90
70
50
125
Bottom Gate Fall Time
vs Temperature
V
+
= 12V
C
LOAD
= 10000pF
C
LOAD
= 3000pF
C
LOAD
= 1000pF
–25
0
25
50
75
TEMPERATURE (C)
100
C
LOAD
= 1000pF
C
LOAD
= 3000pF
50
–50
30
–50
–25
0
25
50
75
TEMPERATURE (C)
100
125
1336 G09
1336 G10
1336 G11
1336fa
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