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PDF LTC1693-1CS8 Data sheet ( Hoja de datos )
| Número de pieza | LTC1693-1CS8 | |
| Descripción | High Speed Single/Dual MOSFET Drivers | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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FEATURES
s Dual MOSFET Drivers in SO-8 Package
or Single MOSFET Driver in MSOP Package
s 1GΩ Electrical Isolation Between the Dual Drivers
Permits High/Low Side Gate Drive
s 1.5A Peak Output Current
s 16ns Rise/Fall Times at VCC = 12V, CL = 1nF
s Wide VCC Range: 4.5V to 13.2V
s CMOS Compatible Inputs with Hysteresis,
Input Thresholds are Independent of VCC
s Driver Input Can Be Driven Above VCC
s Undervoltage Lockout
s Thermal Shutdown
U
APPLICATIO S
s Power Supplies
s High/Low Side Drivers
s Motor/Relay Control
s Line Drivers
s Charge Pumps
LTC1693
High Speed
Single/Dual MOSFET Drivers
DESCRIPTIO
The LTC®1693 family drives power 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. The
LTC1693-2 contains one noninverting and one inverting
driver. The LTC1693-1 and LTC1693-2 drivers are electri-
cally isolated and independent. The LTC1693-3 is a single
driver with an output polarity select pin.
The LTC1693 has VCC independent CMOS input thresh-
olds with 1.2V of typical hysteresis. The LTC1693 can
level-shift the input logic signal up or down to the rail-to-
rail VCC drive for the external MOSFET.
The LTC1693 contains an undervoltage lockout circuit and
a thermal shutdown circuit. Both circuits 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.
TYPICAL APPLICATIO
VIN
48VDC
±10%
RETURN
+ C1
330µF
63V
Two Transistor Foward Converter
C2
1.5µF
63V
R1
0.068Ω
D1
MURS120
12V
C11
0.1µF
C9
1800pF
5%
NPO
C10 R9
0.1µF 12k
C14
3300pF
C5 D2
1µF MURS120
17
R5
2.49k
1%
C12
100pF
12VIN
BOOST
1 LT1339 TG
SYNC
2
5VREF
4
SL/ADJ
TS
SENSE +
3
CT
5
IAVG
6
SS
SENSE –
BG
PHASE
7
VC
10
VREF
RUN/SHDN
VFB
SGND PGND
20
19
BAT54
18
11 R6 100Ω
12 R7 100Ω
16
14
13
9
C15 8
0.1µF
15
R8
301k
1%
R10
10k
1%
1 LTC1693CS8-2 8
IN1 VCC1
27
GND1 OUT1
3
IN2
4
GND2
6
VCC2
5
OUT2
C7
1µF
1 LTC1693CS8-2 8
IN1 VCC1
27
GND1 OUT1
3
IN2
4
GND2
6
VCC2
5
OUT2
C8
1µF
C13
1µF
Q1
MTD20NO6HD
T1
13:2
D3
MURS120
Q3
MTD20NO6HD
••
Q4
Si4420
C3
4700pF
25V
R2
5.1Ω
Q2
Si4420
×2
D4
MBRO530T1
C1: SANYO 63MV330GX
C2: WIMA SMD4036/1.5/63/20/TR
C6: KEMET T510X477M006AS (×8)
L1: GOWANDA 50-318
T1: GOWANDA 50-319
L1
1.5µH
C4
0.1µF
+ C6
470µF
6.3V
×8
VOUT
1.5V/15A
R3
249Ω
1%
R4
1.24k
1%
RETURN
1693 TA01
1
1 page  
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1693
Switching Supply Current
vs COUT (Single Driver)
100
TA = 25°C
90 VCC = 12V
80
70
60
50
40
200kHz
30 100kHz
20 750kHz 25kHz
10 500kHz
0
1 10 100 1000
COUT (pF)
10000
1693 G13
VOH vs Output Current
350 TA = 25°C
300 VCC = 12V
250
VOH
200
150
100
50
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
1693 G15
VOL vs Output Current
300
VCC = 12V
TA = 25°C
250
200
VOL
150
100
50
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
1693 G14
Thermal Derating Curves
1400
1200
TJ = 125°C
1000
800
LTC1693-1/LTC1693-2
600
LTC1693-3
400
200
0
– 55 – 35 –15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
1693 G16
5
5 Page 
TYPICAL APPLICATIONS
LTC1693
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LTC1693-1CS8.PDF ] | |
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