IC MOSFET DRIVER HIGH-SIDE 8SOIC

LT1910ES8#PBF

Manufacturer Part NumberLT1910ES8#PBF
DescriptionIC MOSFET DRIVER HIGH-SIDE 8SOIC
ManufacturerLinear Technology
LT1910ES8#PBF datasheet
 


Specifications of LT1910ES8#PBF

ConfigurationHigh-SideInput TypeNon-Inverting
Delay Time220µsNumber Of Configurations1
Number Of Outputs1Voltage - Supply8 V ~ 48 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case8-SOIC (3.9mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
Current - Peak-High Side Voltage - Max (bootstrap)-
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FEATURES
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
APPLICATIONS
n
Industrial Control
n
Avionics Systems
n
Automotive Switches
n
Stepper Motor and DC Motor Control
n
Electronic Circuit Breaker
TYPICAL APPLICATION
Fault Protected High Side Switch
5V
5.1k
LT1910
+
FAULT OUTPUT
FAULT
V
IN
SENSE
OFF ON
TIMER
GATE
GND
+
0.1μF
DESCRIPTION
®
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 fl ag 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 fl ag becomes inactive
once the switch restarts successfully.
The LT1910 has been specifi cally 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.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
24V
0.50
0.45
0.40
0.01Ω
0.35
0.30
IRFZ34
0.25
10μF
0.20
LOAD
50V
0.15
0.10
1910 TA01
0.05
0
LT1910
Protected High Side
MOSFET Driver
Switch Drop vs Load Current
0
1
3
4
5
2
LOAD CURRENT (A)
1910 TA02
1910fa
1

LT1910ES8#PBF Summary of contents

  • Page 1

    ... The device will not sustain damage from supply transients of –15V to 60V. The LT1910 is available in the SO-8 package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 24V ...

  • Page 2

    ... 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 ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1910ES8#PBF LT1910ES8#TRPBF LT1910IS8#PBF LT1910IS8#TRPBF LEAD BASED FINISH TAPE AND REEL LT1910ES8 ...

  • Page 3

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER I Drain Sense Input Current SENSE + V – V Gate Voltage Above Supply GATE FAULT Output High Threshold Voltage V F(TH) FAULT Output Low Threshold Voltage FAULT ...

  • Page 4

    LT1910 TYPICAL PERFORMANCE CHARACTERISTICS Input Current vs Temperature 200 180 160 140 120 IN 100 –50 – 100 TEMPERATURE (°C) 1910 G04 Timer Charge ...

  • Page 5

    TYPICAL PERFORMANCE CHARACTERISTICS Turn-On Time vs Temperature 400 + V = 24V V = 32V GATE 350 C = 1nF GATE 300 250 200 150 100 – 100 –25 TEMPERATURE ( C) 1910 G13 PIN FUNCTIONS ...

  • Page 6

    LT1910 PIN FUNCTIONS Information). A maximum of 10kΩ can be inserted between a drain-sense resistor and the SENSE pin. If current sensing is not required, the SENSE pin is tied to supply. BLOCK DIAGRAM + V 14μA – + 3.3V ...

  • Page 7

    OPERATION also activates the open-collector NPN to pull the FAULT pin LOW, indicating an overcurrent condition. When the MOSFET gate voltage is discharged to less than 1.4V, the TIMER pin is released. The 14μA current source then slowly charges the ...

  • Page 8

    LT1910 APPLICATIONS INFORMATION to the supply at the same point as the positive end of the sense resistor. The drain-sense threshold voltage has a positive tempera- ture coeffi cient, allowing PTC sense resistors to be used (see Printed Circuit Board ...

  • Page 9

    APPLICATIONS INFORMATION The turn-on current spike into C LOAD V – • PEAK LOAD R C • where V is the MOSFET gate threshold voltage obtained by plotting the equation: ...

  • Page 10

    LT1910 APPLICATIONS INFORMATION Low Voltage/Wide Supply Range Operation When the supply is less than 12V, the LT1910’s charge pump does not produce suffi cient gate voltage to fully enhance the standard N-channel MOSFET. For these ap- plications, a logic-level MOSFET ...

  • Page 11

    ... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

  • Page 12

    ... High Speed Single/Dual N-Channel/P-Channel MOSFET Drivers LTC1710 SMBus Dual Monolithic High Side Switch LTC4412 Low Loss PowerPath™ Controller PowerPath and ThinSOT are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...