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

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	367 Kbytes	26-May-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM5105SD/NOPB LM5105SD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 7012 AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 2425 FARNELL Europe and Asia 1649 MOUSER Worldwide 1409 NEWARK Americas 503 TAYLOR Americas 7012	$1.00 each at 1K+ pcs	reel of 1000
LM5105SDX/NOPB LM5105SDX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 4500 DIGI-KEY 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/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5105.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5105 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM5105SD/NOPB LM5105SD	39.757 39.906	LLP	10	1 1	260 260	Detail	Download	N/A	NS UZXYTT L5105SD
LM5105SDX/NOPB LM5105SDX	39.757 39.906	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/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5105.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5105 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/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5105.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5105 is located at RoHS Status.