Integrated Circuits (ICs)

LM5109BSDX/NOPB

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1-A, 100-V HALF BRIDGE GATE DRIVER WITH 8-V UVLO AND HIGH NOISE IMMUNITY

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Search across all available documentation for this part.

DocumentsBootstrap Circuitry Selection for Half Bridge Configurations (Rev. A)Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D)+13

Integrated Circuits (ICs)

LM5109BSDX/NOPB

Active

Texas Instruments

1-A, 100-V HALF BRIDGE GATE DRIVER WITH 8-V UVLO AND HIGH NOISE IMMUNITY

Deep-Dive with AI

DocumentsBootstrap Circuitry Selection for Half Bridge Configurations (Rev. A)Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D)+13

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM5109BSDX/NOPB

Channel Type	Independent
Current - Peak Output (Source, Sink) [custom]	1 A
Current - Peak Output (Source, Sink) [custom]	1 A
Driven Configuration	Half-Bridge
Gate Type	N-Channel MOSFET
High Side Voltage - Max (Bootstrap) [Max]	108 V
Input Type	Non-Inverting
Logic Voltage - VIL, VIH [custom]	2.2 V
Logic Voltage - VIL, VIH [custom]	0.8 V
Mounting Type	Surface Mount
Number of Drivers	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	8-WDFN Exposed Pad
Rise / Fall Time (Typ) [custom]	15 ns
Rise / Fall Time (Typ) [custom]	15 ns
Supplier Device Package	8-WSON (4x4)
Voltage - Supply [Max]	14 V
Voltage - Supply [Min]	8 V

LM5109B-Q1 Series

Automotive 1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity

Part	Number of Drivers	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Channel Type	Operating Temperature [Min]	Operating Temperature [Max]	Driven Configuration	Voltage - Supply [Min]	Voltage - Supply [Max]	Input Type	Logic Voltage - VIL, VIH [custom]	Logic Voltage - VIL, VIH [custom]	Current - Peak Output (Source, Sink) [custom]	Current - Peak Output (Source, Sink) [custom]	Gate Type	Package / Case	Package / Case [y]	Package / Case [x]	Supplier Device Package	High Side Voltage - Max (Bootstrap) [Max]	Mounting Type	Grade	Qualification
Texas Instruments LM5109AMA/NOPB	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-SOIC	3.9 mm	0.154 in	8-SOIC	108 V	Surface Mount
Texas Instruments LM5109MA	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-SOIC	3.9 mm	0.154 in	8-SOIC	118 V	Surface Mount
Texas Instruments LM5109MAX/NOPB	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-SOIC	3.9 mm	0.154 in	8-SOIC	118 V	Surface Mount
Texas Instruments LM5109BSDX	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-WDFN Exposed Pad			8-WSON (4x4)	108 V	Surface Mount
Texas Instruments LM5109ASDX	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-WDFN Exposed Pad			8-WSON (4x4)	108 V	Surface Mount
Texas Instruments LM5109BQNGTTQ1	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-WDFN Exposed Pad			8-WSON (4x4)	108 V	Surface Mount	Automotive	AEC-Q100
Texas Instruments LM5109BSDX/NOPB	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-WDFN Exposed Pad			8-WSON (4x4)	108 V	Surface Mount
Texas Instruments LM5109ASDX/NOPB	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	MOSFET (N-Channel) N-Channel MOSFET	8-WDFN Exposed Pad			8-WSON (4x4)	108 V	Surface Mount
Texas Instruments LM5109AMA	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-SOIC	3.9 mm	0.154 in	8-SOIC	108 V	Surface Mount
Texas Instruments LM5109MA/NOPB	2	15 ns	15 ns	Independent	-40 °C	125 ¯C	Half-Bridge	8 V	14 V	Non-Inverting	2.2 V	0.8 V	1 A	1 A	N-Channel MOSFET	8-SOIC	3.9 mm	0.154 in	8-SOIC	118 V	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Arrow	N/A	4500	$ 0.32
		9000	$ 0.31
		13500	$ 0.31
Digikey	Cut Tape (CT)	1	$ 1.33
		10	$ 1.19
		25	$ 1.13
		100	$ 0.93
		250	$ 0.87
		500	$ 0.77
		1000	$ 0.60
	Digi-Reel®	1	$ 1.33
		10	$ 1.19
		25	$ 1.13
		100	$ 0.93
		250	$ 0.87
		500	$ 0.77
		1000	$ 0.60
	Tape & Reel (TR)	4500	$ 0.35
		9000	$ 0.33
		13500	$ 0.32
		31500	$ 0.30
Texas Instruments	LARGE T&R	1	$ 0.59
		100	$ 0.46
		250	$ 0.34
		1000	$ 0.24

Description

General part information

LM5109B-Q1 Series

The LM5109B device is a cost-effective, high-voltage gate driver designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of working with rail voltages up to 90 V. The outputs are independently controlled with cost-effective TTL and CMOS-compatible input thresholds. The robust level shift technology operates at high speed while consuming low power and providing clean level transitions from the control input logic to the high-side gate driver. Undervoltage lockout is provided on both the low-side and the high-side power rails. The device is available in the 8-pin SOIC and thermally-enhanced 8-pin WSON packages.

Documents

Technical documentation and resources

Bootstrap Circuitry Selection for Half Bridge Configurations (Rev. A)

Application note

Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D)

Application note

AN-1317 Selection of External Bootstrap Diode for LM510X Devices (Rev. B)

Application note

Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A)

More literature

Using Half-Bridge Gate Driver to Achieve 100% Duty Cycle for High Side FET

Application note

How to achieve higher system robustness in DC drives, part 3: minimum input pulse

Technical article

Small Price Competitive 100-V Driver for 48-V BLDC Motor Drives

Application brief

How to achieve higher system robustness in DC drives, part 2: interlock and deadti

Technical article

LM5109B High Voltage 1-A Peak Half-Bridge Gate Driver datasheet (Rev. C)

Data sheet

Understanding Peak IOH and IOL Currents (Rev. A)

Application brief

Implementing High-Side Switches Using Half-Bridge Gate Drivers for 48-V Battery.

Application note

UCC27282 Improving motor drive system robustness

Application note

Maximizing DC/DC converter designs with UCC27282

Application note

Challenges and Solutions for Half-Bridge Gate Drivers in Bidirectional DC-DC Converters

Application note

External Gate Resistor Selection Guide (Rev. A)

Application brief