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UC3500 датащи(PDF) 1 Page - Unisonic Technologies

номер детали UC3500
подробное описание детали  HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3500 датащи(HTML) 1 Page - Unisonic Technologies

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UNISONIC TECHNOLOGIES CO., LTD
UC3500
CMOS IC
www.unisonic.com.tw
1 of 9
Copyright © 2005 Unisonic Technologies Co., Ltd
QW-R502-072,A
HIGH EFFICIENCY VFM
CONTROLLED STEP-UP
DC/DC CONVERTER
APPLICATIONS
* Cellular telephones
* PDA and hand held instruments
* Palmtop and notebook computer
* Portable equipment
* Battery powered equipment
DESCRIPTION
The UTC UC3500 Step-up DC/DC converters are optimized for
applications that prioritize high efficiency and high frequency. The
efficiency is greatly improved by utilizing an internal VFM controlled
scheme that switches with fixed frequency and is adjustable up to
more than 300 KHz depending on the load.
The UTC UC3500 requires only three external components to
realize the conversion from the battery voltage to the selected
output voltage in the range of 2.5V ~ 5.5V.
The start-up voltage of UTC UC3500 is guaranteed at 0.8V and
the device is operating down to 0.5V. The Output current is
guaranteed up to 150mA, while quiescent current is only 18µA.
FEATURES
* 0.8V start-up voltage
* 0.5V hold-on voltage
* Output current up to 150mA
* Low supply current of 18µA
* Wide output voltage range of 2.5V~5.5V
* Output voltage accuracy ±2%
* High efficiency up to 88%
* Low profile and minimum external components
SOT-25
4
5
3
2
1
1
SOT-89
*Pb-free plating product number: UC3500L
ORDERING INFORMATION
UC3550L-xx-AB3-R
(1)Packing Type
(2)Package Type
(4)Lead Plating
(1) R: Tape Reel
(2) AB3: SOT-89, AF5: SOT-25
(4) L: Lead Free Plating, Blank: Pb/Sn
(3) xx: reference to Marking Information
(3)Voltage Code
Order Number
Normal
Lead Free Plating
Package
Packing
UC3500-xx-AB3-R
UC3500L-xx-AB3-R
SOT-89
Tape Reel
UC3500-xx-AF5-R
UC3500L-xx-AF5-R
SOT-25
Tape Reel


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