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LT1910ES8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P14
LT1910
1
1910fc
For more information www.linear.com/LT1910
TYPICAL APPLICATION
DESCRIPTION
Protected High Side
MOSFET Driver
The LT
®
1910 is a high side gate driver that allows the use of
low cost N-channel power MOSFETs for high side switching
applications. It contains a completely self-contained charge
pump to fully enhance an N-channel MOSFET switch with
no external components.
When the internal drain comparator senses that the switch
current has exceeded the preset level, the switch is turned
off and a fault flag is asserted. The switch remains off for
a period of time set by an external timing capacitor and
then automatically attempts to restart. If the fault still
exists, this cycle repeats until the fault is removed, thus
protecting the MOSFET. The fault flag becomes inactive
once the switch restarts successfully.
The LT1910 has been specifically designed for harsh
operating environments such as industrial, avionics and
automotive applications where poor supply regulation and/
or transients may be present. The device will not sustain
damage from supply transients of –15V to 60V.
The LT1910 is available in the SO-8 package.
Fault Protected High Side Switch
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
FEATURES
APPLICATIONS
n
8V to 48V Power Supply Range
n
Protected from –15V to 60V Supply Transients
n
Short-Circuit Protected
n
Automatic Restart Timer
n
Open-Collector Fault Flag
n
Fully Enhances N-Channel MOSFET Switches
n
Programmable Current Limit, Delay Time and
Autorestart Period
n
Voltage Limited Gate Drive
n
Defaults to Off State with Open Input
n
Available in SO-8 Package
n
Industrial Control
n
Avionics Systems
n
Automotive Switches
n
Stepper Motor and DC Motor Control
n
Electronic Circuit Breaker
Switch Drop vs Load Current
FAULT
IN
TIMER
V
+
SENSE
GATE
LT1910
5.1k
24V5V
FAULT OUTPUT
OFF ON
GND
IRFZ34
1910 TA01
10µF
50V
0.1µF
0.01Ω
LOAD
+
LOAD CURRENT (A)
0
TOTAL DROP (V)
0.30
0.40
0.50
4
1910 TA02
0.20
0.10
0.25
0.35
0.45
0.15
0.05
0
1
2
3
5
LT1910
2
1910fc
For more information www.linear.com/LT1910
Supply Voltage (Pin 8) ............................... –15V to 60V
Input Voltage (Pin 4)
..................... (GND – 0.3V) to 15V
GATE Voltage (Pin 5)
................................................ 75V
SENSE Voltage (Pin 6)
........................................ V
+
±5V
FAULT Voltage (Pin 3)
.............................................. 36V
Current (Pins 1, 2, 4, 5, 6, 8)
................................ 40mA
Operating Temperature Range (Note 2)
LT1910E ............................................... –40°C to 85°C
LT1910I .............................................. –40°C to 125°C
Junction Temperature Range
................ –40°C to 125°C
Storage Temperature Range
................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
.................. 300°C
(Note 1)
1
2
3
4
8
7
6
5
TOP VIEW
V
+
NC
SENSE
GATE
GND
TIMER
FAULT
IN
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 125°C, θ
JA
= 150°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1910ES8#PBF LT1910ES8#TRPBF 1910 8-Lead Plastic SO –40°C to 85°C
LT1910IS8#PBF LT1910IS8#TRPBF 1910 8-Lead Plastic SO –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1910ES8 LT1910ES8#TR 1910 8-Lead Plastic SO –40°C to 85°C
LT1910IS8 LT1910IS8#TR 1910 8-Lead Plastic SO –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 12V to 48V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
S
Supply Current (Off State) V
+
= 48V, V
IN
= 0.8V 1.2 1.9 2.5 mA
∆I
S(ON)
Delta Supply Current (On State) V
IN
= 2V, Measure Increase in I
S
0.8 1.2 mA
V
INH
Input High Voltage E-Grade
I-Grade
l
l
2
3.5
V
V
V
INL
Input Low Voltage E-Grade
I-Grade
l
l
0.8
0.7
V
V
I
IN
Input Current V
IN
= 2V
V
IN
= 5V
l
l
15
55
30
110
50
185
µA
µA
C
IN
Input Capacitance (Note 3) 5 pF
V
T(TH)
Timer Threshold Voltage V
IN
= 2V, Adjust V
T
l
2.6 2.9 3.2 V
V
T(CL)
Timer Clamp Voltage V
IN
= 0.8V 3.2 3.5 3.8 V
I
T
Timer Charge Current V
IN
= V
T
= 2V 9 14 20 µA
V
SENSE
Drain-Sense Threshold Voltage Temperature
Coefficient (Note 3)
50 65
0.33
80 mV
%/°C
LT1910
3
1910fc
For more information www.linear.com/LT1910
ELECTRICAL CHARACTERISTICS
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: The LT1910E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 12V to 48V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
SENSE
Drain Sense Input Current V
+
= 48V, V
SENSE
= 65mV 0.5 1.5 µA
V
GATE
– V
+
Gate Voltage Above Supply V
+
= 8V
V
+
= 12V
l
4
7
4.5
8.5
6
10
V
V
V
+
= 24V
E-Grade
I-Grade
l
l
10
10
12
12
14
15
V
V
V
+
= 48V
E-Grade
I-Grade
l
l
10
10
12
12
14
15
V
V
V
F(TH)
FAULT Output High Threshold Voltage
FAULT Output Low Threshold Voltage
V
IN
= 2V, I
F
= 1mA, Adjust V
T
3.1
3.0
3.4
3.3
3.7
3.6
V
V
V
FOL
FAULT Output Low Voltage I
F
= 1mA
l
0.07 0.4 V
t
ON
Turn-On Time V
+
= 24V, V
GATE
= 32V, C
GATE
= 1nF 100 220 400 µs
t
OFF
Turn-Off Time V
+
= 24V, V
GATE
= 2V, C
GATE
= 1nF 25 100 µs
t
OFF(CL)
Current Limit Turn-Off Time
V
+
= 24V, (V
+
– V
SENSE
)→0.1V, C
GATE
= 1nF
20 50 µs
with statistical process controls. The LT1910I is guaranteed to meet
performance specifications over the full –40°C to 125°C operating
temperature range.
Note 3: Guaranteed but not tested.
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Supply Voltage Supply Current vs Temperature Input Voltage vs Temperature
SUPPLY VOLTAGE (V)
0
SUPPLY CURRENT (mA)
2.4
2.8
3.2
3.6
40
1910 G01
2.0
1.6
2.2
2.6
3.0
3.4
1.8
1.4
1.2
10
20
30
50
ON STATE
OFF STATE
T
A
= 25°C
TEMPERATURE (°C)
–50
0
SUPPLY CURRENT (mA)
1.0
2.0
3.0
2.5
–25
0
25 50
1910 G02
75
4.0
5.0
0.5
1.5
3.5
4.5
125100
V
+
= 48V
ON STATE
OFF STATE
TEMPERATURE (°C)
–50
INPUT VOLTAGE (V)
1.0
1.2
1.4
1.6
2.0
–25
0 25 50
1910 G03
75 125100
1.8
0.8
V
INH
V
INL
P1-P3P4-P6P7-P9P10-P12P13-P14

LT1910ES8#PBF

Mfr. #:
Buy LT1910ES8#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Gate Drivers Protected Hi Side MOSFET Drvr
Lifecycle:
New from this manufacturer.
Delivery:
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