Features • Fixed voltages of 3.3V and 5.0V with initial tolerance of ±1% for standard grade and ±0.5% for A grade • Custom voltages available (3V-17V) • Wide output current range, 20 µA-15 mA • Low temperature coefficient • Available in 5-lead SOT23-5 surface mount package (tape and reel) Description The LM3411 is a low power fixed-voltage (3.3V or 5.0V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator. The LM3411 circuitry includes an internally compensated op amp, a bandgap reference, NPN output transistor, and voltage setting resistors. A trimmed precision bandgap reference with temperature drift curvature correction, provides a guaranteed 1% precision over the operating temperature range (A grade version). The amplifier's inverting input is externally accessible for loop frequency compensation when used as part of a larger servo system. The output is an open-emitter NPN transistor capable of driving up to 15 mA of load current. Because of its small die size, the LM3411 has been made available in the sub-miniature 5-lead SOT23-5 surface mount package. This package is ideal for use in space critical applications. Although its main application is to provide a precision output voltage (no trimming required) and maintain very good regulation in isolated DC/DC converters, it can also be used with other types of voltage regulators or power semiconductors to provide a precision output voltage without precision resistors or trimming. Applications • Secondary controller for isolated DC/DC PWM switching regulators systems • Use with LDO regulator for high-precision fixed output regulators • Precision monitoring applications • Use with many types of regulators to increase precision and improve performance

Also Recommended LM3460▲ 1.2V And 1.5V Feedback Control / Optocoupler Driver For Isolated Supplies MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LM3411 Precision Secondary Regulator/Driver	790 Kbytes	24-Mar-05	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1305: Application Note 1305 LM5030 Evaluation Board	364 Kbytes	4-Feb-04

More Application Notes

Title		Size	Date	Other Language
	AN-1773: Application Note 1773 LM3410X LED Driver 5-Pin SOT-23 Demo Board	1213 Kbytes	31-Jan-08
	AN-1774: Application Note 1774 LM3410X LED Driver 6-Pin LLP Demo Board	718 Kbytes	1-Feb-08
	AN-1095: Application Note 1095 Design of Isolated Converters Using Simple Switchers	398 Kbytes	1-May-04	日本語 中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM3411AM5-3.3/NOPB RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 2273	$0.76 each at 1K+ pcs	reel of 1000
LM3411AM5-5.0/NOPB LM3411AM5-5.0 RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 2344 NEWARK Americas 776	$0.76 each at 1K+ pcs	reel of 1000
LM3411M5-3.3/NOPB LM3411M5-3.3 RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 5267	$0.56 each at 1K+ pcs	reel of 1000
LM3411M5-5.0/NOPB LM3411M5-5.0 RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1000 AVNET-EM Worldwide 1000 DIGIKEY Worldwide 1379 FUTURE Worldwide 1100 NEWARK Americas 698	$0.56 each at 1K+ pcs	reel of 1000
LM3411AM5X-3.3/NOPB RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.76 each at 1K+ pcs	reel of 3000
LM3411AM5X-5.0/NOPB RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.76 each at 1K+ pcs	reel of 3000
LM3411M5X-3.3/NOPB LM3411M5X-3.3 RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 3000 DIGIKEY Worldwide 0	$0.56 each at 1K+ pcs	reel of 3000
LM3411M5X-5.0/NOPB RoHS	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.56 each at 1K+ pcs	reel of 3000

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM3411AM5X-3.5	NONE	NONE	02 Sep 2003
LM3411AN-3.3	NONE	NONE	08 Dec 1998
LM3411AN-5.0	NONE	NONE	08 Dec 1998
LM3411N-3.3	NONE	NONE	08 Dec 1998
LM3411N-5.0	NONE	NONE	08 Dec 1998

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM3411AM5-3.3	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411AM5-5.0	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411AM5X-3.3	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411AM5X-5.0	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411M5-3.3	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411M5-5.0	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411M5X-3.3	LFAST1	0	19510	0	0	2605000	2	739175862
LM3411M5X-5.0	LFAST1	0	19510	0	0	2605000	2	739175862

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.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM3411AM5X-3.5	NONE	NONE	02 Sep 2003
LM3411AN-3.3	NONE	NONE	08 Dec 1998
LM3411AN-5.0	NONE	NONE	08 Dec 1998
LM3411N-3.3	NONE	NONE	08 Dec 1998
LM3411N-5.0	NONE	NONE	08 Dec 1998