Gate Driver. LM5114 Datasheet

LM5114 Driver. Datasheet pdf. Equivalent

LM5114 Datasheet
Recommendation LM5114 Datasheet
Part LM5114
Description Low-Side Gate Driver
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Texas Instruments LM5114
Product
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Sample &
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Technical
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LM5114
SNVS790F – JANUARY 2012 – REVISED NOVEMBER 2015
LM5114 Single 7.6-A Peak Current Low-Side Gate Driver
1 Features
1 Independent Source and Sink Outputs for
Controllable Rise and Fall Times
• 4-V to 12.6-V Single Power Supply
• 7.6-A/1.3-A Peak Sink and Source Drive Current
• 0.23-Open-drain Pulldown Sink Output
• 2-Open-drain Pullup Source Output
• 12-ns (Typical) Propagation Delay
• Matching Delay Time Between Inverting and
Noninverting Inputs
• TTL/CMOS Logic Inputs
• 0.68-V Input Hysteresis
• Up to 14-V Logic Inputs (Regardless of VDD
Voltage)
• Low Input Capacitance: 2.5-pF (Typical)
• –40°C to 125°C Operating Temperature Range
• Pin-to-Pin Compatible With MAX5048
• 6-Pin SOT-23
2 Applications
• Boost Converters
• Flyback and Forward Converters
• Secondary Synchronous FETs Drive in Isolated
Topologies
• Motor Control
3 Description
The LM5114 is designed to drive low-side MOSFETs
in boost-type configurations or to drive secondary
synchronous MOSFETs in isolated topologies. With
strong sink current capability, the LM5114 can drive
multiple FETs in parallel. The LM5114 also has the
features necessary to drive low-side enhancement
mode Gallium Nitride (GaN) FETs. The LM5114
provides inverting and noninverting inputs to satisfy
requirements for inverting and Noninverting gate drive
in a single device type. The inputs of the LM5114 are
TTL/CMOS Logic compatible and withstand input
voltages up to 14 V regardless of the VDD voltage.
The LM5114 has split gate outputs, providing
flexibility to adjust the turnon and turnoff strength
independently. The LM5114 has fast switching speed
and minimized propagation delays, facilitating high-
frequency operation. The LM5114 is available in a 6-
pin SOT-23 package and a 6-pin WSON package
with an exposed pad to aid thermal dissipation.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5114
SOT-23 (6)
WSON (6)
2.90 mm × 1.60 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
VDD
UVLO
IN
INB
DRIVER
P_OUT
N_OUT
UVLO Power-off
pull-down
clamp
VSS
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



Texas Instruments LM5114
LM5114
SNVS790F – JANUARY 2012 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics .......................................... 5
7.6 Switching Characteristics .......................................... 6
7.7 Typical Characteristics .............................................. 8
8 Detailed Description ............................................ 12
8.1 Overview ................................................................ 12
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description ................................................ 12
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Application .................................................. 13
9.3 System Examples ................................................... 17
10 Power Supply Recommendations ..................... 18
11 Layout................................................................... 18
11.1 Layout Guidelines ................................................. 18
11.2 Layout Example .................................................... 18
12 Device and Documentation Support ................. 19
12.1 Community Resources.......................................... 19
12.2 Trademarks ........................................................... 19
12.3 Electrostatic Discharge Caution ............................ 19
12.4 Glossary ................................................................ 19
13 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (March 2013) to Revision F
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Thermal Information table, Feature Description
section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations
section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable
Information section ................................................................................................................................................................ 1
Changes from Revision D (August 2012) to Revision E
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 18
2 Submit Documentation Feedback
Product Folder Links: LM5114
Copyright © 2012–2015, Texas Instruments Incorporated



Texas Instruments LM5114
www.ti.com
5 Device Comparison Table
BASE PART NUMBER
LM5114A
LM5114B
6 Pin Configuration and Functions
DBV Package
6-Pin SOT-23
Top View
VDD
P_OUT
N_OUT
1
2
3
6 IN
5 INB
4 VSS
LM5114
SNVS790F – JANUARY 2012 – REVISED NOVEMBER 2015
INPUT THRESHOLDS
CMOS
TTL
NGG Package
6-Pin WSON
Top View
VDD 1
P_OUT 2
N_OUT 3
6 IN
5 INB
4 VSS
NAME
IN
INB
N_OUT
P_OUT
VDD
VSS
EP
PIN
SOT-23
6
5
3
2
1
4
WSON
6
5
3
2
1
4
Exposed Pad
Pin Functions
I/O DESCRIPTION
I
Noninverting logic input
Connect to VDD when not used.
I
Inverting logic input
Connect to VSS when not used.
Sink-current output
O Connect to the gate of the MOSFET with a short, low inductance path. A gate
resistor can be used to adjust the turnoff speed.
Source-current output
O Connect to the gate of the MOSFET with a short, low inductance path. A gate
resistor can be used to adjust the turnon speed.
Gate drive supply
— Locally decouple to VSS using low ESR/ESL capacitor located as close as possible
to the IC.
Ground
All signals are referenced to this ground.
It is recommended that the exposed pad on the bottom of the package is soldered to
ground plane on the PC board to aid thermal dissipation.
Copyright © 2012–2015, Texas Instruments Incorporated
Product Folder Links: LM5114
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