OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC1155IS8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC1155
1
1155fb
For more information www.linear.com/LTC1155
TYPICAL APPLICATION
FEATURES DESCRIPTION
Dual High Side
Micropower MOSFET Driver
The LT C
®
1155 dual high side gate driver allows using low
cost N-channel FETs for high side switching applications.
An internal charge pump boosts the gate above the posi-
tive rail, fully enhancing an N-channel MOSFET with no
external components. Micropower operation, with 8µA
standby current and 85µA operating current, allows use
in virtually all systems with
maximum efficiency.
Included on-chip is overcurrent sensing to provide au-
tomatic shutdown in case of short circuits. A time delay
can be added in series with the current sense to prevent
false triggering on high in-rush loads such as capacitors
and incandescent lamps.
The LTC1155 operates off of a 4.5V to 18V supply input and
safely drives the gates of virtually all FETs. The
LTC1155
is well suited for low voltage (battery-powered) applica-
tions, particularly where micropower “sleep” operation
is required.
The LTC1155 is available in both 8-pin PDIP and 8-pin
SO packages.
APPLICATIONS
n
Fully Enhances N-Channel Power MOSFETs
n
8µA Standby Current
n
85µA ON Current
n
Short-Circuit Protection
n
Wide Power Supply Range: 4.5V to 18V
n
Controlled Switching ON and OFF Times
n
No External Charge Pump Components
n
Replaces P-Channel High Side MOSFETs
n
Compatible with Standard Logic Families
n
Available in 8-Pin SO Package
n
Laptop Power Bus Switching
n
SCSI Termination Power Switching
n
Cellular Phone Power Management
n
P-Channel Switch Replacement
n
Relay and Solenoid Drivers
n
Low Frequency Half H-Bridge
n
Motor Speed and Torque Control
L, LT , LT C , LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
1155 TA01
R
SEN
0.02Ω
C
DLY
0.1µF
10µF
5A
MAX
R
DLY
100k
POWER BUS
µP
SYSTEM
DISK
DRIVE
DISPLAY
PRINTER,
ETC.
LTC1155
TTL, CMOS INPUT
TTL, CMOS INPUT
GND
GND
IN1
IN2
G2
DS2V
S
DS1
G1
V
S
= 4.5V TO 5.5V
C
DLY
0.1µF
R
SEN
0.02Ω
R
DLY
100k
*SURFACE MOUNT
*IRLR034
5A
MAX
*IRLR034
+
OUTPUT CURRENT (A)
0
0.00
VOLTAGE DROP (V)
0.05
0.10
0.15
0.20
0.25
1 2 3
1155 TA02
Switch Voltage Drop
Laptop Computer Power Bus Switch with Short-Circuit Protection
LTC1155
2
1155fb
For more information www.linear.com/LTC1155
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ..........................................................22V
Input Voltage
........................(V
S
+0.3V) to (GND – 0.3V)
Gate Voltage
..........................(V
S
+24V) to (GND – 0.3V)
Current (Any Pin)
...................................................50mA
Storage Temperature Range
.................. – 65°C to 150°C
(Note 1)
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 4.5V to 18V, unless otherwise noted.
PACKAGE/ORDER INFORMATION
1
2
3
4
8
7
6
5
TOP VIEW
DS1
G1
GND
IN1
DS2
G2
V
S
IN2
J8 PACKAGE
8-LEAD CERDIP
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 150°C, θ
JA
= 100°C/W (J8)
T
JMAX
= 100°C, θ
JA
= 130°C/W (N8)
ORDER PART
NUMBER
1
2
3
4
8
7
6
5
TOP VIEW
DS2
G2
V
S
IN2
DS1
G1
GND
IN1
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 100°C, θ
JA
= 150°C/W
ORDER PART
NUMBER
LTC1155CN8
LTC1155CJ8
LTC1155IN8
LTC1155MJ8
LTC1155CS8
LTC1155IS8
S8 PART MARKING
1155
1155I
Operating Temperature Range
LTC1155C ................................................ 0°C to 70°C
LTC1155I ............................................ – 40°C to 85°C
LTC1155M (OBSOLETE) ................... – 55°C to 125°C
Lead Temperature Range (Soldering, 10 sec.)
...... 300°C
(OBSOLETE)
SYMBOL PARAMETER CONDITIONS
LTC1155M (OBSOLETE) LTC1155C/LTC1155I
UNITSMIN TYP MAX MIN TYP MAX
V
S
Supply Voltage
l
4.5 18 4.5 18 V
I
Q
Quiescent Current OFF V
IN
= 0V, V
S
= 5V (Note 2) 8 20 8 20 µA
Quiescent Current ON V
S
= 5V, V
IN
= 5V (Note 3) 85 120 85 120 µA
Quiescent Current ON V
S
= 12V, V
IN
= 5V (Note 3) 180 400 180 400 µA
V
INH
Input High Voltage
l
2.0 2.0 V
V
INL
Input Low Voltage
l
0.8 0.8 V
I
IN
Input Current 0V < V
IN
< V
S
l
±1.0 ±1.0 µA
C
IN
Input Capacitance 5 5 pF
V
SEN
Drain Sense Threshold Voltage
l
80
75
100
100
120
125
80
75
100
100
120
125
mV
mV
I
SEN
Drain Sense Input Current 0V < V
SEN
< V
S
±0.1 ±0.1 µA
V
GATE
-V
S
Gate Voltage Above Supply V
S
= 5V
V
S
= 6V
V
S
= 12V
l
l
l
6.0
7.5
15
6.8
8.5
18
9.0
15
25
6.0
7.5
15
6.8
8.5
18
9.0
15
25
V
V
V
t
ON
Turn ON Time V
S
= 5V, C
GATE
= 1000pF
Time for V
GATE
> V
S
+ 2V
Time for V
GATE
> V
S
+ 5V
50
200
250
1100
750
2000
50
200
250
1100
750
2000
µs
µs
V
S
= 12V, C
GATE
= 1000pF
Time for V
GATE
> V
S
+ 5V
Time for V
GATE
> V
S
+ 10V
50
120
180
450
500
1200
50
120
180
450
500
1200
µs
µs
LTC1155
3
1155fb
For more information www.linear.com/LTC1155
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 4.5V to 18V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS
LTC1155M (OBSOLETE) LTC1155C/LTC1155I
UNITSMIN TYP MAX MIN TYP MAX
t
OFF
Turn OFF Time V
S
= 5V, C
GATE
= 1000pF
Time for V
GATE
< 1V
10
36
60
10
36
60
µs
V
S
= 12V, C
GATE
= 1000pF
Time for V
GATE
< 1V
10
26
60
10
26
60
µs
t
SC
Short-Circuit Turn OFF Time V
S
= 5V, C
GATE
= 1000pF
Time for V
GATE
< 1V
5
16
30
5
16
30
µs
V
S
= 12V, C
GATE
= 1000pF
Time for V
GATE
< 1V
5
16
30
5
16
30
µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Quiescent current OFF is for both channels in OFF condition.
Note 3: Quiescent current ON is per driver and is measured independently.
TYPICAL PERFORMANCE CHARACTERISTICS
Input Threshold Voltage Drain Sense Threshold Voltage Low Side Gate Voltage
Standby Supply Current Supply Current/Side (ON) High Side Gate Voltage
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (µA)
30
35
40
45
50
5 10 20
1155 G01
5
10
15
20
25
15
V
IN1
= V
IN2
= 0V
T
J
= 25°C
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (µA)
600
700
800
900
1000
5 10 20
1155 G02
100
200
300
400
500
15
V
IN1
OR V
IN2
= 2V
T
J
= 25°C
SUPPLY VOLTAGE (V)
0
4
V – V (V)
16
18
20
22
24
5 10 20
1155 TPC03
6
8
10
12
14
15
S
GATE
SUPPLY VOLTAGE (V)
0
0.4
INPUT THRESHOLD VOLTAGE (V)
1.6
1.8
2.0
2.2
2.4
5 10 20
1155 G04
0.6
0.8
1.0
1.2
1.4
15
V
ON
V
OFF
SUPPLY VOLTAGE (V)
0
50
DRAIN SENSE THRESHOLD VOLTAGE (V)
110
120
130
140
150
5 10 20
1155 G05
60
70
80
90
100
15
SUPPLY VOLTAGE (V)
0
0
V
GATE
(V)
18
21
24
27
30
2 4 10
1155 G06
3
6
9
12
15
6
8
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1155IS8#PBF

Mfr. #:
Buy LTC1155IS8#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Gate Drivers 2x Hi Side uP MOSFET Drvr
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet