Features Inverts or doubles input supply voltage Narrow SO-8 Package 3.5Ω typical output resistance 86% typical conversion efficiency at 200 mA (LM2662) selectable oscillator frequency: 20 kHz/150 kHz (LM2663) low current shutdown mode Description The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage. The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 300 μA and operating efficiency greater than 90% at most loads, the LM2662/LM2663 provides ideal performance for battery powered systems. The LM2662/LM2663 may also be used as a positive voltage doubler. The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2662/LM2663 with an external clock. For LM2662, a frequency control (FC) pin selects the oscillator frequency of 20 kHz or 150 kHz. For LM2663, an external shutdown (SD) pin replaces the FC pin. The SD pin can be used to disable the device and reduce the quiescent current to 10 μA. The oscillator frequency for LM2663 is 150 kHz. Applications Laptop computers Cellular phones Medical instruments Operational amplifier power supplies Interface power supplies Handheld instruments

Typical Application *click for larger image	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LM2662 Switched Capacitor Voltage Converter	392 Kbytes	9-Jun-08	日本語

Other Technical Documents

Title		Type	Date
	Using the LM2660 and LP2986 to Generate a Regulated Negative Output Voltage	App Note	2007-03-21
	Provide a Negative Bias Voltage to Low-voltage Amplifiers to Improve their Near-zero-volt Performance	External Article	2008-11-25

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM2662M/NOPB LM2662M RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 888 AVNET-EM Worldwide 2227 CEAC Asia Pacific 380 DIGI-KEY Worldwide 2740 FARNELL Europe and Asia 1422 MOUSER Worldwide 473 NEWARK Americas 217 RS COMPONENTS Worldwide 183 TAYLOR Americas 12842	$0.97 each at 1K+ pcs	rail of 95
LM2662MX/NOPB LM2662MX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 2480 AVNET-EM Worldwide 10000 DIGI-KEY Worldwide 0 MOUSER Worldwide 2492 TAYLOR Americas 2480	$0.97 each at 1K+ pcs	reel of 2500

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 LM2662.

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 LM2662 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
LM2662M/NOPB LM2662M	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM26 62M
LM2662MX/NOPB LM2662MX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM26 62M

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 LM2662.

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 LM2662 is located at RoHS Status.

CAD Symbols and Models Download LM2662 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM2662M	ABCD150	0	42680	0	0	6394000	1	1814314958
LM2662MX	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 LM2662.

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 LM2662 is located at RoHS Status.