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LTC3203BEDD#TRPBF

Description
Charge Pump STPUP 500mA 10-Pin DFN EP T/R
File Size223KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC3203BEDD#TRPBF Overview

Charge Pump STPUP 500mA 10-Pin DFN EP T/R

LTC3203BEDD#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
FunctionStep Up
Output TypeAdjustable
Output Voltage (V)Adj
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Current (mA)9(Typ)
Output Current (mA)500(Max)
Switching Frequency (kHz)1000(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count10
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width3
PCB changed10
Lead ShapeNo Lead
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
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