Features • LM3488Q is AEC-Q100 qualified and manufactured on an Automotive Grade Flow • 8-lead Mini-SO8 (MSOP-8) package • Internal push-pull driver with 1A peak current capability • Current limit and thermal shutdown • Frequency compensation optimized with a capacitor and a resistor • Internal softstart • Current Mode Operation • Undervoltage Lockout with hysteresis Description The LM3488 is a versatile Low-Side N-FET high performance controller for switching regulators. It is suitable for use in topologies requiring low side FET, such as boost, flyback, SEPIC, etc. Moreover, the LM3488 can be operated at extremely high switching frequency in order to reduce the overall solution size. The switching frequency of LM3488 can be adjusted to any value between 100kHz and 1MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor. The LM3488 has built in features such as thermal shutdown, short-circuit protection and over voltage protection. Power saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up. Key Specification • Wide supply voltage range of 2.97V to 40V • 100kHz to 1MHz Adjustable and Synchronizable clock frequency • ±1.5% (over temperature) internal reference • 5µA shutdown current (over temperature) Applications • Distributed Power Systems • Notebook, PDA, Digital Camera, and other Portable Applications • Offline Power Supplies • Set-Top Boxes

LM3488   2.97 <= V in Lower  V   <= V in Upper  V   <= 40.00 V out 1.26 <=  V <= 300.00 I out    A <= 10.00 Ambient Temperature  °C <= 100 What are WEBENCH® tools? Also Recommended LM3478▲ If Sync Capability Is Not Required LM5020▲ 100V Input LM5022▲ 60V Input, 2MHz Switching Frequency 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
	LM3488/LM3488Q High Efficiency Low-Side N-Channel Controller for Switching Regulators	491 Kbytes	30-Mar-09	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1204: Application Note 1204 LM3478/LM3488 Evaluation Board	218 Kbytes	10-May-04
	AN-1484: Application Note 1484 Designing A SEPIC Converter	196 Kbytes	30-Apr-08	日本語 中文

More Application Notes

Title		Size	Date	Other Language
	AN-1756: Application Note 1756 LM3481 Evaluation Board	505 Kbytes	30-Apr-08	日本語
	AN-1471: Application Note 1471 LM3489 Demonstration Board	695 Kbytes	24-May-06
	AN-1227: Application Note 1227 LM3485 Evaluation Board	86 Kbytes	10-May-04
	AN-1392: Application Note 1392 LM3485 LED Demo Board	569 Kbytes	7-Jun-06	中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM3488MM/NOPB LM3488MM RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1000 AVNET-EM Worldwide 1800 DIGIKEY Worldwide 3548 FUTURE Worldwide 1100 NEWARK Americas 730 RS COMPONENTS Worldwide 780	$0.99 each at 1K+ pcs	reel of 1000
LM3488MMX/NOPB LM3488MMX RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 3500 DIGIKEY Worldwide 0	$0.99 each at 1K+ pcs	reel of 3500
LM3488QMM/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 12 weeks	Distributor Region Qty DIGIKEY Worldwide 1925	$1.32 each at 1K+ pcs	reel of 1000
LM3488QMMX/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 12 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$1.32 each at 1K+ pcs	reel of 3500

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
LM3488MM/NOPB LM3488MM		MINI SOIC	8	1 1	260 260	Detail	Download	N/A	ZXTT S21B
LM3488MMX/NOPB LM3488MMX		MINI SOIC	8	1 1	260 260	Detail	Download	N/A	ZXTT S21B
LM3488QMM/NOPB		MINI SOIC	8	1	260	Detail	Download	N/A	ZXTT SSKB
LM3488QMMX/NOPB		MINI SOIC	8	1	260	Detail	Download	N/A	ZXTT SSKB

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.

Design Tools

Title	Size	Date
Application Note 1204 LM3478/LM3488 Evaluation Board	218 Kbytes	26-Sep-2002
Power Reference Design Library

Reference Design

LM3488 Reference Design - CUK Converter Circuit, Low Input/Output Ripple, Switch Failure Protection: 2.97-5.5V Input, -5.2V @ 3.3A Output

CAD Symbols and Models Download LM3488 CAD Symbols

Models N/A

LM3488   2.97 <= V in Lower  V   <= V in Upper  V   <= 40.00 V out 1.26 <=  V <= 300.00 I out    A <= 10.00 Ambient Temperature  °C <= 100 What are WEBENCH® tools?

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM3488MM	ABCD150	0	34175	0	0	4234000	1	1201409060
LM3488MMX	ABCD150	0	34175	0	0	4234000	1	1201409060
LM3488QMM	ABCD150	0	34175	0	0	4234000	1	1201409060
LM3488QMMX	ABCD150	0	34175	0	0	4234000	1	1201409060

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.