Features Drives both a high-side and low-side N-Channel MOSFET 1A peak output current (1.0A sink / 1.0A source) Independent TTL compatible inputs Bootstrap supply voltage to 108V DC Fast propagation times (30 ns typical) Drives 1000 pF load with 15ns rise and fall times Excellent propagation delay matching (2 ns typical) Supply rail under-voltage lockout Low power consumption Pin compatible with ISL6700 Description The LM5109B 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 90V. The outputs are independently controlled with TTL 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. Under-voltage lockout is provided on both the low-side and the high-side power rails. The device is available in the SOIC-8 and the thermally enhanced LLP-8 packages.

Also Recommended LM5102▲ Has Programmable Rising Edge Delay LM5104▲ Single PWM Input, Has Adaptive Deadtime With Programmable Delay

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

Datasheets

Title		Size	Date	Other Language
	LM5109B High Voltage 1A Peak Half Bridge Gate Driver	272 Kbytes	16-Mar-07

Application Notes

Title		Size	Date	Other Language
	AN-1299: Application Note 1299 LM5041 Evaluation Board	287 Kbytes	16-Mar-04
	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

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM5109BMA/NOPB LM5109BMA RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 4655 AVNET-EM Worldwide 1660 DIGI-KEY Worldwide 2058 FARNELL Europe and Asia 1483 MOUSER Worldwide 370 RS COMPONENTS Worldwide 85 TAYLOR Americas 4655	$0.60 each at 1K+ pcs	rail of 95
LM5109BMAX/NOPB LM5109BMAX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 5000 AVNET-EM Worldwide 2500 DIGI-KEY Worldwide 0 MOUSER Worldwide 2500 TAYLOR Americas 5000	$0.60 each at 1K+ pcs	reel of 2500
LM5109BSD/NOPB LM5109BSD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 3194 MOUSER Worldwide 1000	$0.60 each at 1K+ pcs	reel of 1000
LM5109BSDX/NOPB LM5109BSDX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$0.60 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 LM5109B.

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 LM5109B 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
LM5109BMA/NOPB LM5109BMA	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT L5109 BMA
LM5109BMAX/NOPB LM5109BMAX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT L5109 BMA
LM5109BSD/NOPB LM5109BSD	40.107 40.25	LLP	8	1 1	260 260	Detail	Download	N/A	NS UZXYTT 5109BSD
LM5109BSDX/NOPB LM5109BSDX	40.107 40.25	LLP	8	1 1	260 260	Detail	Download	N/A	NS UZXYTT 5109BSD

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 LM5109B.

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 LM5109B is located at RoHS Status.

CAD Symbols and Models Download LM5109B CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5109BMA	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5109BMAX	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5109BSD	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5109BSDX	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 LM5109B.

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 LM5109B is located at RoHS Status.