LTC1693
High Speed Single/Dual
N-Channel MOSFET Drivers
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Dual MOSFET Drivers in SO-8 Package
or Single MOSFET Driver in MSOP Package
1GΩ Electrical Isolation Between the Dual Drivers
Permits High/Low Side Gate Drive
1.5A Peak Output Current
16ns Rise/Fall Times at V
CC
= 12V, C
L
= 1nF
Wide V
CC
Range: 4.5V to 13.2V
CMOS Compatible Inputs with Hysteresis,
Input Thresholds are Independent of V
CC
Driver Input Can Be Driven Above V
CC
Undervoltage Lockout
Thermal Shutdown
The LTC
®
1693 family drives power N-channel MOSFETs
at high speed. The 1.5A peak output current reduces
switching losses in MOSFETs with high gate capacitance.
The LTC1693-1 contains two noninverting drivers while
the LTC1693-2 contains one noninverting and one invert-
ing driver. These dual drivers are electrically isolated and
independent. The LTC1693-3 is a single driver with an
output polarity select pin.
All MOSFET drivers offer V
CC
independent CMOS input
thresholds with 1.2V of typical hysteresis. They can level-
shift the input logic signal up or down to the rail-to-rail V
CC
drive for the external MOSFET.
The LTC1693 contains an undervoltage lockout circuit and
a thermal shutdown circuit that disable the external
N-channel MOSFET gate drive when activated.
The LTC1693-1 and LTC1693-2 come in an 8-lead SO pack-
age. The LTC1693-3 comes in an 8-lead MSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Power Supplies
High/Low Side Drivers
Motor/Relay Control
Line Drivers
Charge Pumps
TYPICAL APPLICATION
V
IN
48VDC
±10%
RETURN
Two Transistor Forward Converter
C2
1.5µF
63V
+
C1
330µF
63V
R1
0.068Ω
12V
C5
1µF
17
C11
0.1µF
C9
1800pF
5%
NPO
R5
2.49k
1%
1
2
4
3
5
6
7
10
C10
0.1µF
C14
3300pF
R9
12k
C12
100pF
12V
IN
BOOST
LT1339
SYNC
5V
REF
SL/ADJ
C
T
I
AVG
SS
V
C
V
REF
SGND
C15
0.1µF
8
TS
SENSE
+
SENSE
–
BG
PHASE
RUN/SHDN
V
FB
PGND
15
18
11
TG
20
19
BAT54
R6 100Ω
D2
MURS120
LTC1693CS8-2
8
V
CC1
IN1
2
7
GND1 OUT1
3
6
V
CC2
IN2
4
5
GND2 OUT2
1
C7
1µF
C8
1µF
Q1
MTD20NO6HD
T1
13:2
•
D3
MURS120
Q3
MTD20NO6HD
D4
MBRO530T1
12 R7 100Ω
16
14
13
9
R10
10k
1%
R8
301k
1%
LTC1693CS8-2
8
V
CC1
IN1
2
7
GND1 OUT1
3
6
IN2
V
CC2
4
5
GND2 OUT2
1
C13
1µF
C1: SANYO 63MV330GX
C2: WIMA SMD4036/1.5/63/20/TR
C6: KEMET T510X477M006AS (×8)
L1: GOWANDA 50-318
T1: GOWANDA 50-319
1693 TA01
U
D1
MURS120
L1
1.5µH
C3
4700pF
25V
R2
5.1Ω
Q2
Si4420
×
2
V
OUT
1.5V/15A
C4
0.1µF
R3
249Ω
1%
R4
1.24k
1%
U
U
•
+
Q4
Si4420
C6
470µF
6.3V
×
8
RETURN
1
LTC1693
ABSOLUTE
MAXIMUM
RATINGS
Supply Voltage (V
CC
) .............................................. 14V
Inputs (IN, PHASE) ................................... – 0.3V to 14V
Driver Output ................................. – 0.3V to V
CC
+ 0.3V
GND1 to GND2 (Note 5) .....................................
±100V
Junction Temperature .......................................... 150°C
PACKAGE/ORDER INFORMATION
TOP VIEW
IN1 1
GND1 2
IN2 3
GND2 4
8
7
6
5
V
CC1
OUT1
V
CC2
OUT2
IN1 1
GND1 2
IN2 3
GND2 4
TOP VIEW
8
7
6
5
V
CC1
OUT1
V
CC2
OUT2
IN
NC
PHASE
GND
1
2
3
4
TOP VIEW
8
7
6
5
V
CC
OUT
NC
NC
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 135°C/ W
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 135°C/ W
ORDER PART
NUMBER
LTC1693-1CS8
LTC1693-1IS8
S8 PART
MARKING
16931
16931I
ORDER PART
NUMBER
LTC1693-2CS8
LTC1693-2IS8
Consult factory for Industrial and Military grade parts.
The
q
denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 12V, unless otherwise noted.
SYMBOL PARAMETER
V
CC
I
CC
I
CC(SW)
Input
V
IH
V
IL
I
IN
V
PH
I
PH
Output
V
OH
V
OL
R
ONL
R
ONH
I
PKL
I
PKH
High Output Voltage
Low Output Voltage
Output Pull-Down Resistance
Output Pull-Up Resistance
Output Low Peak Current
Output High Peak Current
I
OUT
= –10mA
I
OUT
= 10mA
q
q
ELECTRICAL CHARACTERISTICS
Supply Voltage Range
Quiescent Current
Switching Supply Current
CONDITIONS
LTC1693-1, LTC1693-2, IN1 = IN2 = 0V (Note 2)
LTC1693-3, PHASE = 12V, IN = 0V
LTC1693-1, LTC1693-2, C
OUT
= 4.7nF, f
IN
= 100kHz
LTC1693-3, C
OUT
= 4.7nF, f
IN
= 100kHz
q
q
q
q
High Input Threshold
Low Input Threshold
Input Pin Bias Current
PHASE Pin High Input Threshold
PHASE Pin Pull-Up Current
(Note 3)
PHASE = 0V (Note 3)
2
U
U
W
W W
U
W
(Note 1)
Operating Ambient Temperature Range
C-Grade ................................................... 0°C to 70°C
I-Grade ................................................–40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 200°C/ W
S8 PART
MARKING
16932
16932I
ORDER PART
NUMBER
LTC1693-3CMS8
MS8 PART
MARKING
LTEB
MIN
4.5
400
200
TYP
720
360
14.4
7.2
MAX
13.2
1100
550
20
10
3.1
1.7
±10
6.5
45
UNITS
V
µA
µA
mA
mA
V
V
µA
V
µA
V
q
q
q
q
q
2.2
1.1
4.5
10
11.92
2.6
1.4
±0.01
5.5
20
11.97
30
2.85
3.00
1.70
1.40
75
mV
Ω
Ω
A
A
LTC1693
The
q
denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 12V, unless otherwise noted.
SYMBOL PARAMETER
Switching Timing (Note 4)
t
RISE
t
FALL
t
PLH
t
PHL
Output Rise Time
Output Fall Time
Output Low-High Propagation Delay
Output High-Low Propagation Delay
C
OUT
= 1nF
C
OUT
= 4.7nF
C
OUT
= 1nF
C
OUT
= 4.7nF
C
OUT
= 1nF
C
OUT
= 4.7nF
C
OUT
= 1nF
C
OUT
= 4.7nF
q
q
q
q
q
q
q
q
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
TYP
17.5
48.0
16.5
42.0
38.0
40.0
32
35
MAX
35
85
35
75
70
75
70
75
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
GΩ
Driver Isolation
R
ISO
GND1-GND2 Isolation Resistance
LTC1693-1, LTC1693-2 GND1-to-GND2 Voltage = 75V
q
0.075
1
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Supply current is the total current for both drivers.
Note 3:
Only the LTC1693-3 has a PHASE pin.
Note 4:
All AC timing specificatons are guaranteed by design and are not
production tested.
Note 5:
Only applies to the LTC1693-1 and LTC1693-2.
TYPICAL PERFOR A CE CHARACTERISTICS
IN Threshold Voltage vs V
CC
2.75
T
A
= 25°C
INPUT THRESHOLD VOLTAGE (V)
INPUT THRESHOLD VOLTAGE (V)
2.50
V
IH
2.25
2.00
1.75
1.50
1.25
1.00
5
6
7
9
8
V
CC
(V)
10
11
12
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
– 50 –25
0
75
50
25
TEMPERATURE (°C)
V
IL
V
IH
INPUT THRESHOLD HYSTERESIS (V)
V
IL
U W
1693 G01
IN Threshold Voltage
vs Temperature
3.00
V
CC
= 12V
1.4
1.3
1.2
IN Threshold Hysteresis
vs Temperature
V
CC
= 12V
V
IH
-V
IL
1.1
1.0
0.9
0.8
– 50
100
125
– 25
0
50
25
75
TEMPERATURE (°C)
100
125
1693 G02
1693 G03
3
LTC1693
TYPICAL PERFOR A CE CHARACTERISTICS
PHASE Threshold Voltage vs V
CC
6
PHASE THRESHOLD VOLTAGE (V)
5
V
PH(H)
4
V
PH(L)
3
2
1
0
5
6
7
9
8
V
CC
(V)
10
11
12
TIME (ns)
T
A
= 25°C
24
22
20
18
t
FALL
16
14
12
10
5
6
7
9
8
V
CC
(V)
10
11
12
TIME (ns)
Rise/Fall Time vs C
OUT
120
T
A
= 25°C
V
CC
= 12V
100 f
IN
= 100kHz
80
TIME (ns)
TIME (ns)
TIME (ns)
60
40
20
0
1
10
100
C
OUT
(pF)
1000
10000
1693 G07
t
RISE
t
FALL
Propagation Delay vs C
OUT
50
OUTPUT SATURATION VOLTAGE (mV)
T
A
= 25°C
V
CC
= 12V
f
IN
= 100kHz
150
V
OL
(50mA)
100
40
QUIESCENT CURRENT (µA)
TIME (ns)
t
PLH
30
t
PHL
20
1
10
100
C
OUT
(pF)
1000
10000
1693 G10
4
U W
1693 G04
Rise/Fall Time vs V
CC
T
A
= 25°C
C
OUT
= 1nF
f
IN
= 100kHz
20
19
18
17
Rise/Fall Time vs Temperature
V
CC
= 12V
C
OUT
= 1nF
f
IN
= 100kHz
t
RISE
t
RISE
16
15
14
13
12
11
10
–50 –25
t
FALL
50
25
0
75
TEMPERATURE (°C)
100
125
1693 G05
1693 G06
Propagation Delay vs V
CC
55
50
45
40
35
30
25
20
t
PHL
t
PLH
T
A
= 25°C
C
OUT
= 1nF
f
IN
= 100kHz
Propagation Delay vs Temperature
50
45
40
t
PLH
35
t
PHL
30
25
V
CC
= 12V
C
OUT
= 1nF
f
IN
= 100kHz
15
10
5
6
7
8
9
V
CC
(V)
10
11
12
20
– 50 – 25
50
25
75
0
TEMPERATURE (°C)
100
125
1693 G08
1693 G09
Output Saturation Voltage
vs Temperature
200
350
Quiescent Current
vs V
CC
(Single Driver)
T
A
= 25°C
V
IN
= 0V
300
V
CC
= 12V
V
OH
(50mA) wrt V
CC
250
200
50
V
OH
(10mA) wrt V
CC
V
OL
(10mA)
0
– 55 – 35 –15
150
100
5 25 45 65 85 105 125
TEMPERATURE (°C)
1693 G11
5
6
7
9
8
V
CC
(V)
10
11
12
1693 G12
LTC1693
TYPICAL PERFOR A CE CHARACTERISTICS
Switching Supply Current
vs C
OUT
(Single Driver)
100
SWITCHING SUPPLY CURRENT (mA)
90
80
70
T
A
= 25°C
V
CC
= 12V
50
40
30
20
10
0
1
10
100
C
OUT
(pF)
1000
10000
1693 G13
V
OL
(mV)
60
V
OH
vs Output Current
350
300
250
T
A
= 25°C
V
CC
= 12V
POWER DISSIPATION (mW)
1400
1200
1000
V
OH
(mV)
200
150
100
50
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
1693 G15
U W
V
OL
vs Output Current
300
250
200
V
OL
150
100
50
0
0
10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
1693 G14
V
CC
= 12V
T
A
= 25°C
750kHz
200kHz
100kHz
25kHz
500kHz
Thermal Derating Curves
T
J
= 125°C
V
OH
LTC1693-1/LTC1693-2
800
600
LTC1693-3
400
200
0
– 55 – 35 –15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
1693 G16
5
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