H-852

TELECOM SOLUTIONS
New Tel-Note
to Correspond with
Bourns® Design Kit H-852
LTE RRU POWER MODULE
Current or Voltage Adjustment
Objective
Product
Design Kit
4G/LTE RRU power modules often require precise current and/or
voltage output adjustment. The purpose of this note is to introduce
an efficient and low-cost solution for the adjustment of 4G/LTE RRU
power modules.
A miniature SMD trimming potentiometer can be added to
circuitry to adjust either the voltage output or precision current
in 4G/LTE RRU power modules.
Riverside, California - January 21, 2015 - Bourns is pleased to announce the
release of the LTE RRU Power Module Tel-Note to correspond with the existing
Design Kit H-852. Design Kit H-852 contains a series of Bourns® Model 3224
SMD Trimpot® Trimming Potentiometers with various resistance levels.
ge
Mobile broadband power supplies often need adjustment of output voltage
n
to compensate for unit to unit variations or variations due to differences in
t®
system wiring. The Bourns® Model 3224 Series of Surface Mount Trimpot®
Trimming Potentiometers are ideal for applications where board space
is limited and accurate voltage adjustment is required.
3224W-1-102E
*Additional part numbers included in Design Kit:
• 3224W-1-103E
• 3224W-1-503E
• 3224J-1-102E
• 3224J-1-103E
• 3224J-1-503E
Voltage Adjustable Circuit
•
•
•
•
•
Low profile 4 mm SMD trimmer
Sealed for board processing, consistent with Bourns guidelines
Multiturn cermet element
Wide range of resistance values
Wiper pre-set at 50 % ± 10 % of actual total resistance
for quick adjustment
• RoHS compliant**
• Halogen free***
**RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/E
2011/65/EU June 8, 2011.
considers a product to be
***Bourns follows the prevailing definition of “halogen free” in the industry. Bourns consi
is 900 ppm or
“halogen free” if (a)
a)) the
he Bromine
he
Br
Brom
omin
oomi
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m
ine (Br) content
content is 900 ppm or less; (b) the Chlorine (Cl) content
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ine
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Chlorine (Cl) content is 1500 ppm or less. Specifications
Specific
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3224W-1-102E*
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Features & Benefits
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4 mm SMD Trimpot® Trimming Potentiometer: 3224W-1-102E*
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For
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H-852
Precision Current Limiter
Solution
Americas:
Am
EMEA:
EM
VIN
Voltage / Current
Source
VOUT
R1
ADJ
R2
3224W-1-102E*
The schematic shown here illustrates the application protection and does not
constitute the complete circuit design.
Customers should verify actual device performance in their specific applications.
Tel +1-951 781-5500
Fax +1-951 781-5700
Tel +36 88 520 390
Fax +36 88 520 211
Asia-Pacific:
Tel +886-2 256 241 17
Fax +886-2 256 241 16
COPYRIGHT© 2014 • BOURNS, INC. • 12/14 • PSG • XX/K1450
“Bourns” and “Trimpot” are registered trademarks of Bourns, Inc.
in the U.S. and other countries.
The new Tel-Note and existing Design Kit are available on Bourns’ websitee
at www.bourns.com.
Tel-Note Solution
LTE RRU Power Module
Current or Voltage Adjustment
Design Kit
H-852
Components
Included
3224W-1-102E
3224W-1-103E
3224W-1-503E
3224J-1-102E
3224J-1-103E
3224J-1-503E
Should you have any questions or need additional information, please feel free to contact Customer Service/Inside
Sales.
“Bourns” is a registered trademark of Bourns, Inc. in the United States and other countries.
K1468