LTC1693
High Speed Single/Dual
N-Channel MOSFET Drivers
FEATURES
DESCRIPTIO
n
Dual MOSFET Drivers in SO-8 Package The LTC 1693 family drives power N-channel MOSFETs
or Single MOSFET Driver in MSOP Package at high speed. The 1.5A peak output current reduces
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1GW Electrical Isolation Between the Dual Drivers switching losses in MOSFETs with high gate capacitance.
Permits High/Low Side Gate Drive
The LTC1693-1 contains two noninverting drivers while
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1.5A Peak Output Current
the LTC1693-2 contains one noninverting and one invert-
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16ns Rise/Fall Times at V = 12V, C = 1nF
CC L
ing driver. These dual drivers are electrically isolated and
n
Wide V Range: 4.5V to 13.2V
CC
independent. The LTC1693-3 is a single driver with an
n
CMOS Compatible Inputs with Hysteresis,
output polarity select pin.
Input Thresholds are Independent of V
CC
n All MOSFET drivers offer V independent CMOS input
Driver Input Can Be Driven Above V CC
CC
n thresholds with 1.2V of typical hysteresis. They can level-
Undervoltage Lockout
n shift the input logic signal up or down to the rail-to-rail V
Thermal Shutdown CC
drive for the external MOSFET.
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APPLICATIO S
The LTC1693 contains an undervoltage lockout circuit and
a thermal shutdown circuit that disable the external
n
Power Supplies
N-channel MOSFET gate drive when activated.
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High/Low Side Drivers
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Motor/Relay Control The LTC1693-1 and LTC1693-2 come in an 8-lead SO pack-
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Line Drivers age. The LTC1693-3 comes in an 8-lead MSOP package.
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Charge Pumps , LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Two Transistor Forward Converter
V
IN
48VDC
+ C1 C2
10%
330F 1.5F
R1
63V 63V
0.068
RETURN D1
MURS120
L1
Q1
T1 1.5H
MTD20NO6HD
13:2
V
12V
OUT
1.5V/15A
C5
C3
D2
C4
LTC1693CS8-2
1F 4700pF
MURS120 1 8
0.1F
IN1 V
CC1 25V
R3
17
2 7
R2
249
GND1 OUT1 D3
C6
C11 12V
+
IN 5.1
3 6 1%
MURS120
470F
0.1F
20 IN2 V
CC2
BOOST Q2 6.3V
4 5 R4
C9
19
GND2 OUT2 Q4 Si4420 8
1.24k
LT1339 TG
1800pF
Si4420 2
1
1%
C7 C8
5% SYNC Q3
BAT54
1F 1F
NPO 2 18
MTD20NO6HD
5V TS
REF
R5 R6 100
4 11
+
RETURN
2.49k SL/ADJ SENSE
R7 100
D4
3 12
1%
C SENSE
MBRO530T1
T
LTC1693CS8-2
1 8
5 16
I BG IN1 V
AVG CC1
R8
6 14 2 7
SS PHASE GND1 OUT1
301k
7 13 3 6
1%
IN2 V
V RUN/SHDN
C CC2
10 9 4 5
V V GND2 OUT2
C10 REF FB
C12
R9
0.1F 100pF
12k SGND PGND R10
C13
C1: SANYO 63MV330GX
10k
1F
C2: WIMA SMD4036/1.5/63/20/TR
8 15
C14 C15
1%
C6: KEMET T510X477M006AS ( 8)
3300pF 0.1F
L1: GOWANDA 50-318
T1: GOWANDA 50-319
1693 TA01
1
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ULTC1693
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (V ) .............................................. 14V Operating Ambient Temperature Range
CC
Inputs (IN, PHASE) ................................... 0.3V to 14V C-Grade ................................................... 0 C to 70 C
Driver Output ................................. 0.3V to V + 0.3V I-Grade ................................................40 C to 85 C
CC
GND1 to GND2 (Note 5) ..................................... 100V Storage Temperature Range ................. 65 C to 150 C
Junction Temperature.......................................... 150 C Lead Temperature (Soldering, 10 sec).................. 300 C
PACKAGE/ORDER INFORMATION
TOP VIEW TOP VIEW
TOP VIEW
IN1 1 8 V IN1 1 8 V
CC1 CC1
IN 1 8 V
CC
GND1 2 7 OUT1 GND1 2 7 OUT1
NC 2 7 OUT
PHASE 3 6 NC
IN2 V
IN2 3 6 V 3 6
CC2 CC2
GND 4 5 NC
GND2 OUT2 GND2 OUT2
4 5 4 5
MS8 PACKAGE
8-LEAD PLASTIC MSOP
S8 PACKAGE S8 PACKAGE
8-LEAD PLASTIC SO 8-LEAD PLASTIC SO T = 150 C, q = 200 C/ W
JMAX JA
T = 150 C, q = 135 C/ W
T = 150 C, q = 135 C/ W
JMAX JA JMAX JA
S8 PART S8 PART MS8 PART
ORDER PART ORDER PART ORDER PART
NUMBER MARKING NUMBER MARKING NUMBER MARKING
LTC1693-1CS8 LTC1693-2CS8
16931 16932 LTC1693-3CMS8 LTEB
LTC1693-1IS8 16931I LTC1693-2IS8 16932I
Consult factory for Industrial and Military grade parts.
The l denotes specifications which apply over the full operating
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T = 25 C. V = 12V, unless otherwise noted.
A CC
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V Supply Voltage Range 4.5 13.2 V
CC
I Quiescent Current LTC1693-1, LTC1693-2, IN1 = IN2 = 0V (Note 2) l 400 720 1100 m A
CC
LTC1693-3, PHASE = 12V, IN = 0V l 200 360 550 m A
I Switching Supply Current LTC1693-1, LTC1693-2, C = 4.7nF, f = 100kHz l 14.4 20 mA
CC(SW) OUT IN
LTC1693-3, C = 4.7nF, f = 100kHz l 7.2 10 mA
OUT IN
Input
V High Input Threshold l 2.2 2.6 3.1 V
IH
V Low Input Threshold l 1.1 1.4 1.7 V
IL
I Input Pin Bias Current l 0.01 10 m A
IN
V PHASE Pin High Input Threshold (Note 3) l 4.5 5.5 6.5 V
PH
I PHASE Pin Pull-Up Current PHASE = 0V (Note 3) l 10 20 45 m A
PH
Output
V High Output Voltage I = 10mA l 11.92 11.97 V
OH OUT
V Low Output Voltage I = 10mA l 30 75 mV
OL OUT
R Output Pull-Down Resistance 2.85 W
ONL
R Output Pull-Up Resistance 3.00 W
ONH
I Output Low Peak Current 1.70 A
PKL
I Output High Peak Current 1.40 A
PKH
2
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