Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LTC3203B-1 Datasheet(PDF) 1 Page - Linear Technology

Part No. LTC3203B-1
Description  500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
Download  16 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo 

LTC3203B-1 Datasheet(HTML) 1 Page - Linear Technology

 
Zoom Inzoom in Zoom Outzoom out
 1 / 16 page
background image
LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
1
32031fa
APPLICATIO S
TYPICAL APPLICATIO
FEATURES
DESCRIPTIO
The LTC
®3203/LTC3203-1/LTC3203B/LTC3203B-1arelow
noise, high efficiency charge pump DC/DC converters
capable of driving loads up to 500mA from a 2.7V to 5.5V
input. Low external parts count (two flying capacitors and
bypass capacitors at VIN and VOUT) make the LTC3203
family ideally suited for small, battery-powered applica-
tions.
Built-in soft-start circuitry prevents excessive inrush
current during start-up. High switching frequency enables
the use of small external capacitors. The LTC3203/
LTC3203-1 feature Burst Mode operation at light load to
achieve high efficiency whereas the LTC3203B/
LTC3203B-1 operate at constant frequency to achieve
lowest noise operation.
The LTC3203-1/LTC3203B-1 have a user selectable fixed
output voltage of 4.5V or 5V to power LEDs or logic
circuits. The FB pin of the LTC3203/LTC3203B can be used
to program the desired output voltage. The parts are short-
circuit and overtemperature protected and are available in
a low profile (3mm
× 3mm) DFN package.
High Current LED Backlight Supply for
Cellphones/PDAs
Cellphone Camera Light Supply
General Purpose 3.3V or Li-Ion to 5V Supply
USB ON THE GO(OTG) Devices
Selectable Dual Mode Operation: 1:1.5 or 1:2
High Output Current: Up to 500mA
Low Noise Constant Frequency (1MHz/0.9MHz)
Operation*
VIN Range: 2.7V to 5.5V
Adjustable Output Voltage (LTC3203/LTC3203B)
User Selectable Fixed Output Voltages: 4.5V or 5V
(LTC3203-1 and LTC3203B-1)
Burst Mode
® Operation with
IQ ~ 120µA (LTC3203/LTC3203-1)
Constant Freqency Operation at All Loads
(LTC3203B/LTC3203B-1)
Soft-Start Limits Inrush Current at Turn-On
Short-Circuit/Thermal Protection
Shutdown Disconnects Load from Input
Shutdown Current: < 1
µA
Available in a 10-pin (3mm
× 3mm) DFN Package
500mA Output Current
Low Noise Dual Mode
Step-Up Charge Pumps
3203 F02
LTC3203-1
ON/OFF
OUTPUT PROGRAMMING
VSEL
500mA
SHDN
MODE
GND
VOUT
VOUT
VIN
VIN
C1+
C1–
C2–
C2+
2.2
µF
2.2
µF
2.2
µF
10
µF
R1*
100k
IOUT(MAX)
300mA
300mA
500mA
500mA
VSEL
LOW
HIGH
LOW
HIGH
VOUT
4.5V
5V
4.5V
5V
*R1
316k
357k
357k
402k
VIN (V)
2.5
0
20
40
60
3
3.5
4
4.5
3203 G05
5
80
100
10
30
50
70
90
5.5
VOUT = 4.5V
VOUT = 5V
Efficiency vs VIN at 300mA Load Current
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*Protected by U.S. Patents including 6411531.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn