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preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 1 of 11 www.elitemicropower.com low noise, regulated charge pump dc/dc converter general description two times charge pump and constant switching freque ncy configuration with low noise characteristics, low e xternal components makes the EMD3001 unique performance and perfect for the portable applications. fixed re gulated output voltage (EMD3001) is available for different applications with input voltage range from 2.7v to 4.5v and provide up to 100ma of output current. soft-start circuitry, preventing the inrush current , thermal shutdown and short circuit protection are all built -in as well. it also features with <1ua low showdown current whe n the device is disable. the EMD3001 is available in a 6-pin sot-26 package (fixed 5v output). features low noise constant frequency operation (2mhz) 100ma output current power range form 2.7v to 4.5v shutdown current < 1 a needs no inductors soft start function reduces inrush current and has slew rate control output voltage regulates to 5v 4% or adj. uses small ceramic capacitor of 1 f thermal shutdown protects output over loading protects output shorted to ground pwm dimming control wled brightness 5v fixed version in sot-26 applications white led driver 3v to 5v charge pump conversion battery backup supplies handheld portable devices
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest vers ion of relevant information prior to placing orders . dsd3001_v3.1 june 20 th 2008 page 2 of 11 www.elitemicropower.com package & ordering information connection diagram order information sot-26 (top view) EMD3001-50vc06grr 50 output fixed voltage vc06 sot-26 package grr rohs package rating: -40 to 85c package in tape & reel sot-26 (top view) EMD3001-50vc06nrr 50 output fixed voltage vc06 sot-26 package nrr rohs & halogen free package rating: -40 to 85c package in tape & reel package type product id package marking transport m edia EMD3001-50vc06grr sot-26 EMD3001-50vc06nrr 3k units tape & reel
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 3 of 11 www.elitemicropower.com typical applications figure 1. EMD3001 fixed 5v, v in from 2.7v to 4.5v cn cp vout vin shdnb 1uf 1uf 1uf off on EMD3001 vout=5 4% 2.73v vin 3v, iout 40ma 3.1v vin 4.5v, iout 100ma gnd vin 2.7 to 4.5v
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 4 of 11 www.elitemicropower.com absolute maximum ratings output current ------------------------------------ --------------150ma vin, vout, shdnb voltage ------------------------- -0.6v to +6v vout short circuits duration ---------------------- -------- indefinite esd protection (hbm) ------------------------------ ------------- 2kv operating temperature range ---------------- -40 to +85 storage temperature range ----------------- -65 to +150 electrical specifications note1: due to testing limit. note2: r ol (2vin-vout)/i out lead soldering temperature (10 sec) --------------- --- 300 recommended operating conditions vin ----------------------------------------------- ----------- 2.7v to 4.5v cin, cout, cfly ----------------------------------- --------------------1uf vout loading -------------------------------------- ---------- Q 100ma specification are at t a =25 c, vin=3.6v, cfly=1uf, cin=1uf, cout=1uf unless oth erwise noted. v in , v out , i q , v ih and v il apply over the full operating temperature range. symbol parameter conditions min. typ. max (specification) units note v in input voltage 2.7 4.5 v 2.7v vin 3.1v,i out 40ma 4.8 5 5.2 v v out output voltage 3.1v < vin 4.5v,i out 100ma 4.8 5 5.2 v i q operating supply current i out =0ma,shdnb=v in 2.5 tbd ma i shdn shutdown current shdn=0v,v out =0v 1 a note1 v r output ripple v in =3v,i out =100ma 40 mv p-p efficiency v in =3v,i out =50ma 80 % f osc switching freq. 1 2 mhz v ih shdn input threshold 1.2 v v il shdn input threshold 0.4 v t on vout turn-on time v in =3v,i out =0ma, 10% to 90% 0.5 ms r ol open-loop output resistance v in =3v,i out =100ma 10 note2 i short output short circuit current v in =3.6v,v out =0v 15 55 ma
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 5 of 11 www.elitemicropower.com pin descriptions typical performance characteristics pin name pin order EMD3001 description cp 6 positive terminal connection of the fly capaci tor. vin 5 input supply voltage. cn 4 negative terminal connection of the fly capaci tor. shdnb 3 high to enable and low to disable the emd30 01. vout 1 output of regulating. gnd 2 grounding reference of all i/o pin. note1: EMD3001 regulates output to 5v and has no fe edback pin. only gnd is available.
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 6 of 11 www.elitemicropower.com typical performance characteristics
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 7 of 11 www.elitemicropower.com function block diagram figure 2. EMD3001 functional block diagram
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 8 of 11 www.elitemicropower.com operation charge-pump operation the EMD3001 configures a 2x charge-pump and regulat es vout to 5v. sensing the output voltage through inte rnal divided resistors and modulating the charge current by error amplifiers signal are used to regulate the o utput voltage. the EMD3001 uses a 2mhz-frequency non-overlapping clock phase to pump the fly capacit or then store the charge to the output capacitor and regulate the output voltage cited above. shutdown current when shutdown is been trigger by low state signal o n shdnb, the output and cp voltage of EMD3001 will pu ll to ground to guarantee that shutdown current less than 1 a in very short time. soft-start and slew-rate control the soft-start slew-rate function can reduce the in rush current during the input power ramping time. the st art-up time is almost less than 0.5ms in typical condition . during the EMD3001 start-up, the input power will charge a constant current to the fly capacitor and output capacitor. short-circuit and thermal protected to prevent been damaged by shorting output to groun d, the EMD3001 has built-in short-circuit protection t o limit the output current up to about 25ma ~ 50ma. and when th e loading is getting too large, out of absolute maxim um ratings of EMD3001, there is a thermal protected ci rcuitry to prevent too large current flowing through EMD3001 t o the output terminal. capacitor selection cfly, cin and cout capacitors should utilize the lo w esr (equivalent series resistance) ceramic capacitor. the charge pump strength is controlled by the flyin g capacitor, 1 f is recommended. for reducing noise and ripple purpose, tantalum and aluminum material capacitors is not recommended. cin and cout should use the low esr (<0.1 ) ceramic capacitor for degrade the noise and ripple, 1 f is recommended. the value of cin, cout, cfly will impact on several important paramet ers of EMD3001 such as output ripple, start-up time, charg e pump strength and loop stability.
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 9 of 11 www.elitemicropower.com application circuits figure 3. lithium-ion battery to 5v white or blue l ed driver figure 4. regulates to 5v system 1uf cn cp vout vin gnd shdnb li battery 2.7 ? 4.2v 100 1uf 1uf off on EMD3001 pwm as dimming control at shdnb cn cp vout vin pgnd shdnb 1uf 1uf 1uf off on EMD3001
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 10 of 11 www.elitemicropower.com package description sot-26 package 2 o symbpls min. nom. max. a 1.45 a1 0.15 a2 0.9 1.15 1.3 b 0.3 0.5 c 0.08 0.22 d 2.90 bsc. e 2.80 bsc. e1 1.60 bsc. e 0.95 bsc e1 1.90 bsc l 0.3 0.45 0.6 l1 0.60 ref l2 0.25 ref ? 0 4 8 2 5 10 15 unit: m m
preliminary EMD3001 elite micropower inc. elite micropower inc. reserves the right to make ch anges to improve reliability or manufacturability w ithout notice, and customers are advised to obtain the latest version of relevant information prior to placing orders. dsd3001_v3.1 june 20 th 2008 page 11 of 11 www.elitemicropower.com ? copyright 2005 all rights reserved. no part of this document may be reproduced or dupli cated in any form or by any means without the prior permission of emp. the contents contained in this document are believe d to be accurate at the time of publication. emp as sumes no responsibility for any error in this document, and reserves the right to change the products or specif ication in this document without notice. the information contained herein is presented only as a guide or examples for the application of our p roducts. no responsibility is assumed by emp for any infringeme nt of patents, copyrights, or other intellectual pr operty rights of third parties which may result from its use. no license, either express, implied or otherwise, is granted un der any patents, copyrights or other intellectual property rights of emp or others. any semiconductor devices may have inherently a cer tain rate of failure. to minimize risks associated with customer's application, adequate design and operating safeguar ds against injury, damage, or loss from such failur e, should be provided by the customer when making application de signs. emp's products are not authorized for use in critic al applications such as, but not limited to, life s upport devices or system, where failure or abnormal operation may directly af fect human lives or cause physical injury or proper ty damage. if products described here are to be used for such kin ds of application, purchaser must do its own qualit y assurance testing appropriate to such applications.

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