EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC3203-1_15

Description
500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
File Size221KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Compare View All

LTC3203-1_15 Overview

500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps

LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
500mA Output Current
Low Noise Dual Mode
Step-Up Charge Pumps
DESCRIPTIO
The LTC
®
3203/LTC3203-1/LTC3203B/LTC3203B-1 are low
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 V
IN
and V
OUT
) 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.
, 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.
FEATURES
Selectable Dual Mode Operation: 1:1.5 or 1:2
High Output Current: Up to 500mA
Low Noise Constant Frequency (1MHz/0.9MHz)
Operation*
V
IN
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
I
Q
~ 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: < 1µA
Available in a 10-pin (3mm
×
3mm) DFN Package
APPLICATIO S
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
TYPICAL APPLICATIO
ON/OFF
Efficiency vs V
IN
at 300mA Load Current
100
OUTPUT PROGRAMMING
90
80
V
OUT
500mA
10µF
2.2µF
EFFICIENCY (%)
70
60
50
40
30
3203 F02
SHDN V
SEL
LTC3203-1
V
IN
2.2µF
2.2µF
R1*
V
IN
C1+
C1–
MODE
100k
I
OUT(MAX)
V
SEL
V
OUT
300mA
300mA
500mA
500mA
LOW 4.5V
HIGH 5V
LOW 4.5V
HIGH 5V
V
OUT
C2+
C2–
GND
*R1
316k
357k
357k
402k
20
10
0
2.5
3
3.5
4
V
IN
(V)
4.5
5
5.5
3203 G05
U
U
U
V
OUT
= 5V
V
OUT
= 4.5V
32031fa
1

LTC3203-1_15 Related Products

LTC3203-1_15 LTC3203B-1_15 LTC3203B_15 LTC3203_15
Description 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
What if I don't have enough E coins to sell things?
Hello everyone, I want to buy something on JD.com, but I found that I don’t have enough E coins. Then I have a few classmates who have dozens of E coins. I want to ask the administrator if he can help...
zh471021698 Talking
The difference between SOP packaged voice chip and DIP packaged voice chip!
SOP packaging is a form of component packaging. Common packaging materials include plastic, ceramic, glass, metal, etc. Plastic packaging is now basically used. It has a wide range of applications and...
次狐狸 FPGA/CPLD
Share XDS100V2 DIY
A few days ago, I DIYed one based on TI's open source XDS100V2....
sblpp Microcontroller MCU
Is the prize money of Xilinx Open Source Hardware Design Competition a lot or a little?
[i=s]This post was last edited by paulhyde on 2014-9-15 09:50[/i] I went to Wuxi last weekend and participated in the "Open Source Hardware Innovation Competition" organized by Xilinx. The final prize...
hfzjj Electronics Design Contest
Atmel SAM4E Xplained Pro library and register operation PIO
Today I will share the PIO module of SAM4E. This time I used IAR as the compilation environment. I ported a routine from AS 6.2 to IAR. This is a template with library, which contains several peripher...
强仔00001 Microchip MCU
A live broadcast + 2 notes, practice and understand the Linux secure boot steps of MPU
The term secure boot seems to be uncommon. Maybe it is rarely involved in MCU development? I think it is more related to bootloader. If you want to know more, welcome to follow the 19-year embedded en...
nmg Microchip MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2599  817  1077  2233  2235  53  17  22  45  57 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号