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Número de pieza | UC3380 | |
Descripción | PWM STEP UP DC-DC CONTROLLER | |
Fabricantes | Unisonic Technologies | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de UC3380 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
No Preview Available ! UNISONIC TECHNOLOGIES CO., LTD
UC3380
PWM STEP UP DC-DC
CONTROLLER
CMOS IC
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
Lead Free
Halogen Free
UC3380L-xx-AF5-R
UC3380G-xx-AF5-R
Package
SOT-25
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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QW-R502-099.D
1 page UC3380
APPLICATION CIRCUIT
CMOS IC
TEST CIRCUIT
1.
2.
VIN + + 47u
--
EXT
VOUT
SHUTDOWN
VSS
0.1u
+
47u -
V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R502-099.D
5 Page |
Páginas | Total 9 Páginas | |
PDF Descargar | [ Datasheet UC3380.PDF ] |
Número de pieza | Descripción | Fabricantes |
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