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

WEBENCH® LM3488     Min   Max   Range     VIN – V    2.97 – 40.00V     VOUT V    1.26 – 300.00V     IOUT A    ≤ 10.00A     Ambient Temp °C    ≤ 100°C   Footprint BOM Cost Efficiency What are WEBENCH® tools? Also Recommended LM3478▲ If Sync Capability Is Not Required LM5020▲ 100V Input LM5022▲ 60V Input, 2MHz Switching Frequency

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 High Efficiency Low-Side N-Channel Controller for Switching Regulators	503 Kbytes	17-Oct-11	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1204: Application Note 1204 LM3478/LM3488 Evaluation Board	218 Kbytes	10-May-04
	AN-1149: Application Note 1149 Layout Guidelines for Switching Power Supplies	113 Kbytes	1-May-04	日本語 中文
	AN-1193: Application Note 1193 Layout Guidelines for Switching Power Supplies	248 Kbytes	10-May-04
	AN-1286: Application Note 1286 Compensation For The LM3478 Boost Controller	204 Kbytes	19-May-09	日本語 中文
	AN-1484: Application Note 1484 Designing a SEPIC Converter	196 Kbytes	30-Apr-08	日本語 中文
	AN-1990: Application Note 1990 Compensation for Current Mode Control SEPIC Converters	225 Kbytes	19-Jan-10
	AN-1994: Application Note 1994 Modeling and Design of Current Mode Control Boost Converters	235 Kbytes	3-Mar-10

Other Technical Documents

Title		Type	Date
	Switching power supply design with the LM5000 Continuous Mode Flyback Converter	App Note	2007-03-21

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM3488MM/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 147 DIGI-KEY Worldwide 3355 FARNELL Europe and Asia 3815 MOUSER Worldwide 683 NEWARK Americas 247 RS COMPONENTS Worldwide 780 TAYLOR Americas 3114	$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 CEAC Asia Pacific 3500 DIGI-KEY Worldwide 0 TAYLOR Americas 3500	$0.99 each at 1K+ pcs	reel of 3500

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 LM3488.

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 LM3488 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
LM3488MM/NOPB	29.851 30.002	MINI SOIC	8	1	260	Detail	Download	N/A	ZXTT S21B
LM3488MMX/NOPB LM3488MMX	29.851 30.002	MINI SOIC	8	1 1	260 260	Detail	Download	N/A	ZXTT S21B

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 LM3488.

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 LM3488 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

CAD Symbols and Models Download LM3488 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM3488MM	ABCD150	0	42680	0	0	6394000	1	1814314958
LM3488MMX	ABCD150	0	42680	0	0	6394000	1	1814314958

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 LM3488.

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 LM3488 is located at RoHS Status.