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UC3380 датащи(PDF) 1 Page - Unisonic Technologies

номер детали UC3380
подробное описание детали  PWM STEP UP DC-DC CONTROLLER
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3380 датащи(HTML) 1 Page - Unisonic Technologies

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UNISONIC TECHNOLOGIES CO., LTD
UC3380
CMOS IC
www.unisonic.com.tw
1 of 9
Copyright © 2012 Unisonic Technologies Co., Ltd
QW-R502-099.D
PWM STEP UP DC-DC
CONTROLLER
DESCRIPTION
The UC3380 is PWM step up DC-DC switching controller that
operates from 0.9V. The low start up input voltage makes UC3380
specially designed for powering portable equipment from one or two
cells battery packs. This device consist of a soft start circuit, a reference
voltage source, an error amplifier, an oscillator, a phase compensation,
a PWM controller and an output drive circuit for driving external power
transistor.
Additionally, a chip enable feature is provided to power down the
converter for extended battery life. The device features a voltage mode
PWM control loop, providing stable and high efficiency operation over a
broad load current range.
FEATURES
* 0.9V Low Start-Up Input Voltage at 1mA Load
* Low Operation Current
* 0.5uA Low Shutdown Current
* Fix Frequency PWM at 300KHZ
* Built in PWM Switching Control Circuit ,Duty Ratio is 0~78%
* Output Voltage:0.1V Step Setting is Available Between 2.0V and 6.5V
* Soft Start Time: 3ms
* Shutdown Function
APPLICATIONS
*Portable Devices
*Electronic Games
*Portable Audio (MP3)
*Personal Digital Assistant (PDA)
*Digital still Cameras(DSC)
*Camcorders
*White LED Driver
*Single and Dual-Cell Battery Operated Products
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
UC3380L-xx-AF5-R
UC3380G-xx-AF5-R
SOT-25
Tape Reel


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