Specification	LM2105DR

Applications	DC Motors, General Purpose
Current - Output / Channel	500 mA
Current - Peak Output	800 mA
Fault Protection	UVLO
Features	Bootstrap Circuit
Interface	Logic
Load Type	Capacitive
Mounting Type	Surface Mount
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Technology	NMOS
Voltage - Supply [Max]	18 V
Voltage - Supply [Min]	5 V

LM2105 Series

107-V 0.5-A/0.8-A half-bridge gate driver with 5-V UVLO and integrated bootstrap diode

Part	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Load Type	Fault Protection	Applications	Package / Case	Features	Current - Output / Channel	Interface	Technology	Current - Peak Output	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Package / Case [y]	Package / Case [x]
Texas Instruments LM2105DSGR	Surface Mount	5 V	18 V	Capacitive	UVLO	DC Motors General Purpose	8-WFDFN Exposed Pad	Bootstrap Circuit	500 mA	Logic	NMOS	800 mA	-40 °C	125 ¯C	8-WSON (2x2)
Texas Instruments LM2105DR	Surface Mount	5 V	18 V	Capacitive	UVLO	DC Motors General Purpose	8-SOIC	Bootstrap Circuit	500 mA	Logic	NMOS	800 mA	-40 °C	125 ¯C	8-SOIC	3.9 mm	0.154 in

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.83
		10	$ 0.73
		25	$ 0.69
		100	$ 0.56
		250	$ 0.52
		500	$ 0.44
		1000	$ 0.36
	Digi-ReelÛ	1	$ 0.83
		10	$ 0.73
		25	$ 0.69
		100	$ 0.56
		250	$ 0.52
		500	$ 0.44
		1000	$ 0.36
	Tape & Reel (TR)	3000	$ 0.32
		6000	$ 0.30
		15000	$ 0.29
		30000	$ 0.28
Texas Instruments	LARGE T&R	1	$ 0.60
		100	$ 0.46
		250	$ 0.34
		1000	$ 0.24

Description

General part information

LM2105 Series

The LM2105 is a compact, 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 integrated bootstrap diode saves board space and reduces system cost by eliminating the need for an external discrete diode.

The –1-V DC and –19.5-V transient negative voltage handling on the SH pin improve the system robustness in high noise applications. The small, thermally-enhanced 8-pin WSON package improves PCB layout by allowing the driver to be placed closer to the motor phases. The LM2105 is also available in an 8-pin SOIC package compatible with industry standard pinouts. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails for protection during power up and power down.