SP6669EB ETC

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 6

Technical content

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr April 2021 Rev. 1.0.1 © 2012-2021 MaxLinear, Inc. www.maxlinear.com GENERAL DESCRIPTION The SP6669 is a synchronous current mode PWM step down (buck) converter capable of delivering up to 800mA of current and optimized for portable battery -operated applications. Based on a current -mode 1.5MHz constant frequency PWM control scheme, the SP6669 reduces the overall component count and solution footprint. It provides low output voltage ripple and ex cellent line and load regulation. It also implements a 100% duty cycle LDO mode. Output voltage is adjustable to as low as 0.6V with a better than 3% accuracy while a low quiescent current supports the most stringent battery operating conditions. Built-in over temperature and under voltage lock-out protections insure safe operations under abnormal operating conditions. The SP6669 is offered in a RoHS compliant, “green”/halogen free 5-pin SOT23 package. EEVVAALLUUAATTIIOONN BBOOAARRDD MMAANNUUAALL

FEATURES

  • Guaranteed 800mA Output Current − Input Voltage: 2.5V to 5.5V
  • 1.5MHz PWM Current Mode Control − 100% Duty Cycle LDO Mode Operations − Achieves 95% Efficiency
  • Adjustable Output Voltage Range − As Low as 0.6V with ±3% Accuracy
  • Over Temperature & UVLO Protection EVALUATION BOARD SCHEMATICS Fig. 1: SP6669 Evaluation Board Schematics

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr © 2012-2021 MaxLinear, Inc. 2/6 Rev. 1.0.1 PIN ASSIGNMENT Fig. 2: SP6669 Pin Assignment PIN DESCRIPTION Name Pin Number Description EN 1 Enable Pin. Do not leave the pin floating. VEN<0.4V: Shutdown mode VEN>1.2V: Device enabled GND 2 Ground Signal Pin. SW 3 Switching node. VIN 4 Power Supply Pin. Must be decoupled to ground with a 4.7µF or greater ceramic capacitor. VFB 5 Adjustable Version Feedback Input Pin. Connect VFB to the center point of the resistor divider.

ORDERING INFORMATION

Refer to SP6669’s datasheet and/or www.maxlinear.com for exact and up to date ordering information.

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr © 2012-2021 MaxLinear, Inc. 3/6 Rev. 1.0.1 USING THE EVALUATION BOARD INITIAL SETUP Set the input supply to a voltage between 2.5V to 5.5V and connect it to VIN and GND connectors on the left side of the evaluation board. Connect the load to the VOUT and GND connectors on the right hand side of the board. Check to make sure that jumper J1 is set to VIN. The board will power -up and regulate to the desired output voltage VOUT set by the feedback resistors. The board will operate w ith a load current I OUT of up to 800mA. JUMPER J1 FUNCTION Jumper J1 can be used to either short EN pin to VIN or to GND. The Board is supplied from MaxLinear with the jumper set to connect EN to VIN. VOUT PROGRAMMING The SP6669 has a dynamically programmable output voltage using 2 feedback resistors to control the output voltage: 𝑉𝑉 𝑂𝑂𝑂𝑂𝑂𝑂 = 0.6𝑉𝑉 × 1 + 𝑅𝑅1 𝑅𝑅2

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr © 2012-2021 MaxLinear, Inc. 4/6 Rev. 1.0.1 EVALUATION BOARD SCHEMATICS

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr © 2012-2021 MaxLinear, Inc. 5/6 Rev. 1.0.1 BILL OF MATERIAL Ref. Qty Manufacturer Part Number Size Component Board 1 MaxLinear 146-6595-00 1"x1.5" SP6669 Eval board U1 1 MaxLinear SP6669AEK-L SOT23-5L 800mA Buck Reg. CIN 1 Murata GRM188R60J475KE19D 0603 Ceramic 4.7µF 6.3V X5R COUT 1 Murata GRM21BR60J106KE19 0805 Ceramic 10µF 6.3V X5R CF 1 Murata GRM1885C1H101JA01B 0603 Ceramic 100pF 50V COG L1 1 Wurth Electronik 744025004 2.8mm x 2.8mm x 2.8mm Inductor 4.7µH, 1.35A, 100mΩ R1 1 Vishay CRCW06032003F 0603 0603 200KΩ, 1/10W, 1% R2 1 Vishay CRCW06031003F 0603 100KΩ, 1/10W, 1% J1 1 Wurth Electronik 61303611121 0.64mm SQ x 6mm 3 Pin Header, 2.54mm pitch J1 (Jumper) 1 Wurth Electronik 609002115121 0.1” Jumper short TP 3 Mill-Max 0300-115-01-4727100 0.042” dia Test Point Female Pin

800mA 11..55MMHHzz SSyynncchhrroonnoouuss SStteepp--DDoowwnn CCoonnvveerrtteerr © 2012-2021 MaxLinear, Inc. 6/6 Rev. 1.0.1

REVISION HISTORY

1.0.0 09/16/2010 Initial release of document 1.0.1 04/12/2021 Updated IOUT, Reformat of document (new logo), updated Manufacturer name to MaxLinear in BOM table CORPORATE HEADQUARTERS

5966 La Place Court

Carlsbad, CA 92008 Fax: +1 (760) 444-8598 www.maxlinearr.com The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc. MaxLinear, Inc. assumes no resp onsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no par t of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permiss ion of MaxLinear, Inc. MaxLinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing , assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances. MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this doc ument. Except as expressly provided in any written license agreement from MaxLinear, Inc., the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. MaxLinear, the MaxLinear log o, any MaxLinear trademarks (MxL, Full -Spectrum Capture, FSC, G.now, AirPHY, Puma, and AnyWAN), and the MaxLinear logo on the products sold are all property of MaxLinear, Inc. or one of MaxLinear’s subsidiaries the property of their respective owners.