Features • Drives both a high side and low side N-channel MOSFET • 1.8A peak gate drive current • Bootstrap supply voltage range up to 118V DC • Integrated bootstrap diode • Single TTL compatible Input • Programmable turn-on delays (Dead-time) • Enable Input pin • Fast turn-off propagation delays (26ns typical) • Drives 1000pF with 15ns rise and fall time • Supply rail under-voltage lockout • Low power consumption Description The LM5105 is a high voltage gate driver designed to drive both the high side and low side N -Channel MOSFETs in a synchronous buck or half bridge configuration. The floating high-side driver is capable of working with rail voltages up to 100V. The single control input is compatible with TTL signal levels and a single external resistor programs the switching transition dead-time through tightly matched turn-on delay circuits. A high voltage diode is provided to charge the high side gate drive bootstrap capacitor. The robust level shift technology operates at high speed while consuming low power and provides clean output transitions. Under-voltage lockout disables the gate driver when either the low side or the bootstrapped high side supply voltage is below the operating threshold. The LM5105 is offered in the thermally enhanced 10-pin LLP plastic package.

Also Recommended LM5100A▲ 3A Half Bridge Driver CMOS-Type Threshold Inputs LM5101A▲ 3A Half Bridge Driver TTL-Type Threshold Inputs LM5102▲ Independently Programmable Delay (Rising Edge) LM5104▲ Single PWM Input, Has Adaptive Deadtime With Programmable Delay MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application *click for larger image	Block Diagram click for larger image
Typical Performance *click for larger image

Datasheets

Title		Size	Date	Other Language
	LM5105 100V Half Bridge Gate Driver with Programmable Dead-Time	744 Kbytes	7-Feb-06

More Application Notes

Title		Size	Date	Other Language
	AN-1317: Application Note 1317 Selection of External Bootstrap Diode for LM510X Devices	92 Kbytes	25-Feb-04	日本語 中文
	AN-1331: Application Note 1331 LM5033 Evaluation Board	507 Kbytes	27-May-04
	AN-1299: Application Note 1299 LM5041 Evaluation Board	287 Kbytes	16-Mar-04
	AN-1923: Application Note 1923 Current Sense Demo Board (SOIC) User`s Guide	3507 Kbytes	29-Apr-09	中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM5105SD/NOPB LM5105SD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 2000 DIGIKEY Worldwide 3345 FARNELL Europe and Asia 949 FUTURE Worldwide 530 NEWARK Americas 1003	$1.00 each at 1K+ pcs	reel of 1000
LM5105SDX/NOPB LM5105SDX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$1.00 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Part Number(s) (NSID)	Top View	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM5105SD/NOPB LM5105SD		LLP	10	1 1	260 260	Detail	Download	N/A	NS UZXYTT L5105SD
LM5105SDX/NOPB LM5105SDX		LLP	10	1 1	260 260	Detail	Download	N/A	NS UZXYTT L5105SD

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

CAD Symbols and Models Download LM5105 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5105SD	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5105SDX	ABCD150XV2	0	3601	0	0	1155496	4	327875145

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.