Features 1.6A, 0.2, internal switch Operating voltage as low as 2.0V 600kHz/1.3MHz pin selectable frequency operation Over temperature protection 8-Lead MSOP package Description The LM2622 is a step-up DC/DC converter with a 1.6A, 0.2 internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM2622 is an ideal part for biasing TFT displays. The LM2622 can be operated at switching frequencies of 600kHz and 1.3MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. The LM2622 is available in a low profile 8-lead MSOP package. Applications TFT Bias Supplies Handheld Devices Portable Applications GSM/CDMA Phones Digital Cameras

WEBENCH® LM2622     Min   Max   Range     VIN – V    2.00 – 12.00V     VOUT V    2.00 – 18.00V     IOUT A    ≤ 1.00A     Ambient Temp °C    ≤ 100°C   Footprint BOM Cost Efficiency What are WEBENCH® tools? Also Recommended LM3224 2.4A Switch (Supports Higher Resolution, More Power, Or Larger TFT/LCD)

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

Datasheets

Title		Size	Date	Other Language
	LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter	464 Kbytes	13-May-04	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1198: Application Note 1198 LM2622 Step-Up DC/DC Converter Evaluation Board	110 Kbytes	3-Apr-07
	AN-1237: Application Note 1237 RSDS Flat Panel Display Guidelines Part 2	141 Kbytes	14-May-03
	AN-1250: Application Note 1250 Inductive Based Switching Regulator Circuits Provide High Efficiency White LED Drives	81 Kbytes	26-Sep-02	日本語
	AN-1234: Application Note 1234 RSDS Flat Panel Display Design Guidelines Part 1	142 Kbytes	13-May-04	日本語

Other Technical Documents

Title		Type	Date
	Your Walls Will Be Changing (Circuits for LCD Multimedia TV Panels)	External Article	2007-09-12
	Integration Simplifies TFT Power Designs	App Note	2003-03-06
	Inductive-Based Switching Regulator Circuits Provide High-Efficiency White-LED Drives	App Note	2002-04-29

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM2622MM-ADJ/NOPB LM2622MM-ADJ RoHS Status	MINI SOIC	Full production Lead Time: 8 weeks	Distributor Region Qty BRITESTONE South Korea 220 DIGI-KEY Worldwide 2907 MOUSER Worldwide 855 RS COMPONENTS Worldwide 552 RSL MICRO Asia Pacific 5000	$0.91 each at 1K+ pcs	reel of 1000
LM2622MMX-ADJ/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty AECO TECH Asia Pacific 1000 AITG Asia Pacific 1001 DIGI-KEY Worldwide 0	$0.91 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 LM2622.

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 LM2622 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
LM2622MM-ADJ/NOPB LM2622MM-ADJ	29.851 30.002	MINI SOIC	8	1 1	260 260	Detail	Download	N/A	ZXTT S18B
LM2622MMX-ADJ/NOPB	29.851	MINI SOIC	8	1	260	Detail	Download	N/A	ZXTT S18B

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 LM2622.

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 LM2622 is located at RoHS Status.

CAD Symbols and Models Download LM2622 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM2622MM-ADJ	ABCD150	0	42680	0	0	6394000	1	1814314958
LM2622MMX-ADJ	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 LM2622.

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 LM2622 is located at RoHS Status.