L3380 Datasheet, PDF (1/9 Pages) Unisonic Technologies – PWM STEP UP DC-DC CONTROLLER

UNISONIC TECHNOLOGIES CO., LTD
L3380
PWM STEP UP DC-DC
CONTROLLER
CMOS IC
DESCRIPTION
The L3380 is PWM step up DC-DC switching controller that
operates from 0.9V. The low start up input voltage makes L3380
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 Grequency PWM at 100KHZ
* Built in PWM switching control circuit ,duty ratio is 0~83%
* Output voltage:0.1V step setting is available between 2.0V and
6.5V
* Soft start time: 6ms
* 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
Order Number
Normal
Lead Free Plating

^{L3380-xx-AF5-R}
L3380L-xx-AF5-R
Package
SOT-25
1
2
3
5
4
SOT-25
*Pb-free plating product number: L3380L
Packing
Tape Reel
L3380L-xx-AF5-R


(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(1) R: Tape Reel
(2) AF5: SOT-25
(3) xx: refer to Marking Information
(4) L: Lead Free Plating, Blank: Pb/Sn
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