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Home › Magazines › 2007 › July/August › Lithium Charger

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Lithium Charger

Published in issue 367, July/August 2007

Lithium Charger

Batteries based on lithium, such as LiPo (Lithium-polymer) and Lithium-Ion ones are ideal candidates to supply a robot with power. Compared to other types of battery they are lighter, which results in a lower mechanical strain on the chassis. The availability is good as well, and they are manufactured in many shapes and sizes.

 

 


 

Components

Resistors
R1,R2,R6 = 10 k (SMD 0805)
R3,R4 = 100 k 1% (SMD 0805)
R5 = 180 mW  1/4 W  (SMD 1210) , bijv. Digikey P.18SCT-ND
 
Capacitors:
C1,C2 = 10 m/25 V (SMD 12010)
C3...C5 = 100 n (SMD 0805)
C6 = 47 n (SMD 0805)
 
Semiconductors
D1 = BAT54 (SOT-23)
D2,D3 = MBRS540T3G (SMC), e.g. Digikey MBRS540T3GOSCT-ND
IC1 = MAX745
T1 = FDS6911 (SOIC12, e.g. Digikey FDS6911CT-ND
 
Miscellaneous
L1 = 22μH (JW-MILLER PM2110-220K-RC), e.g.Digikey M8760-ND
JP1,JP2 = jumper with 2-polige SIL-header
PCB, ref. 070273-1

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
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PCB layout
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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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