LM3668SD-3.3EV National Semiconductor, LM3668SD-3.3EV Datasheet

Page 1

... DC-DC converter. This application note contains information about the evaluation board. For more details and electrical characteristics about the converter operation, please refer to the datasheet. Typical Application © 2009 National Semiconductor Corporation National Semiconductor Application Note 1623 Anne Lu March 24, 2009 Operating Range • ...

Page 2

... Die Attach Pad, connect the DAP to SGND on PCB layout to enhance thermal performance. It should not be used as a primary ground connection. Ordering Information Order Number LM3668SD - 2822 LM3668SDX - 2833 LM3668SD - 3034 LM3668SDX - 3034 LM3668SD - 4550 LM3668SDX - 4550 Note example option is 3.0V/3.4V, when V OUT options. www.national.com 30018502 ...

Page 3

... Bill Of Materials Component Name LM3668SD C = 10µ 22µF (2.8/3.3V, 3.0/3.4V) OUT C = 22µF (4.5/5.0V) OUT 4.7µ Inductor Manufacturer Specification NSC LLP-12 JMK212BJ106K JK212BJ226MG Taiyo-Yuden LMK212BJ226MMG JMK212BJ475M Coilcraft LPS4018–222L 3 Case Size 3mm 0.8mm 0805(2012) 0805(2012) 0805(2012) 0805(2012) 4mm x 4mm x 1.8mm ...

Page 4

Operating Information The LM3668 evaluation board is set for the following default positions: • 3.3V, for V = 2.8V move VSEL pin to Low via OUT OUT jumper • SYNC Mode = H (PWM Mode), for Auto Mode, ...

Page 5

Notes 5 www.national.com ...

Page 6

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...